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malfunction or damage not covered by the vehicle warranty. Damage to vehicle components resulting from the installation or use of non-GM certified parts, including control module modifications, are not covered under the terms of the vehicle warranty and may affect remaining warranty coverage for affected parts. GM Accessories are designed to complement and function with other systems on the vehicle. Your GM dealer/retailer can accessorize the vehicle using genuine GM Accessories. When you go to your GM dealer/retailer and ask for GM Accessories, you will know that GM-trained and supported service technicians will perform the work using genuine GM Accessories. Also, see Adding Equipment to Your Airbag-Equipped Vehicle on page 1-47.


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California Proposition 65 Warning Most motor vehicles, including this one, contain and/or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Engine exhaust, many parts and systems (including some inside the vehicle), many fluids, and some component wear by-products contain and/or emit these chemicals.


California Perchlorate Materials Requirements Certain types of automotive applications, such as airbag initiators, seat belt pretensioners, and lithium batteries contained in remote keyless transmitters, may contain perchlorate materials. Special handling may be necessary. For additional information, see www.dtsc.ca.gov/hazardouswaste/perchlorate.


5-4


Doing Your Own Service Work


{ CAUTION:


You can be injured and the vehicle could be damaged if you try to do service work on a vehicle without knowing enough about it.


(cid:129) Be sure you have sufficient knowledge,


experience, the proper replacement parts, and tools before attempting any vehicle maintenance task.


(cid:129) Be sure to use the proper nuts, bolts, and


other fasteners. English and metric fasteners can be easily confused. If the wrong fasteners are used, parts can later break or fall off. You could be hurt.


If doing some of your own service work, use the proper service manual. It tells you much more about how to service the vehicle than this manual can. To order the proper service manual, see Service Publications Ordering Information on page 7-14.


This vehicle has an airbag system. Before attempting to do your own service work, see Servicing Your Airbag-Equipped Vehicle on page 1-46. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Record on page 6-16.


Adding Equipment to the Outside of the Vehicle Things added to the outside of the vehicle can affect the airflow around it. This can cause wind noise and can affect fuel economy and windshield washer performance. Check with your dealer/retailer before adding equipment to the outside of the vehicle. Fuel Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline advertised as TOP TIER Detergent Gasoline.


Gasoline Octane Use premium unleaded gasoline with a posted octane rating of 91 or higher. You can also use regular unleaded gasoline rated at 87 octane or higher, but the vehicle’s acceleration could be slightly reduced, and you might notice a slight audible knocking noise, commonly referred to as spark knock. If the octane is less than 87, you might notice a heavy knocking noise when you drive. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. Otherwise, you could damage the engine. If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, the engine needs service.


Gasoline Specifications At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB-3.5 or 3.511 in Canada. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Additives on page 5-6 for additional information.


5-5


California Fuel If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel is not available in states adopting California emissions standards, the vehicle will operate satisfactorily on fuels meeting federal specifications, but emission control system performance might be affected. The malfunction indicator lamp could turn on and the vehicle might fail a smog-check test. See Malfunction Indicator Lamp on page 3-29. If this occurs, return to your authorized dealer/retailer for diagnosis. If it is determined that the condition is caused by the type of fuel used, repairs might not be covered by the vehicle warranty.


Additives To provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control system to work properly. In most cases, you should not have to add anything to the fuel. However, some gasolines contain only the minimum amount of additive required to meet U.S. Environmental Protection Agency regulations. To help keep fuel injectors and intake valves clean, or if the vehicle experiences problems due to dirty injectors or valves, look for gasoline that is advertised as TOP TIER Detergent Gasoline. For customers who do not use TOP TIER Detergent Gasoline regularly, one bottle of GM Fuel System Treatment PLUS, added to the fuel tank at every engine oil change, can help clean deposits from fuel injectors and intake valves. GM Fuel System Treatment PLUS is the only gasoline additive recommended by General Motors.


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Also, your dealer/retailer has additives that will help correct and prevent most deposit-related problems. Gasolines containing oxygenates, such as ethers and ethanol, and reformulated gasolines might be available in your area. We recommend that you use these gasolines, if they comply with the specifications described earlier. However, E85 (85% ethanol) and other fuels containing more than 10% ethanol must not be used in vehicles that were not designed for those fuels. Notice: This vehicle was not designed for fuel that contains methanol. Do not use fuel containing methanol. It can corrode metal parts in the fuel system and also damage plastic and rubber parts. That damage would not be covered under the vehicle warranty.


Some gasolines that are not reformulated for low emissions can contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); ask the attendant where you buy gasoline whether the fuel contains MMT. We recommend against the use of such gasolines. Fuels containing MMT can reduce the life of spark plugs and the performance of the emission control system could be affected. The malfunction indicator lamp might turn on. If this occurs, return to your dealer/retailer for service.


Fuels in Foreign Countries If you plan on driving in another country outside the United States or Canada, the proper fuel might be hard to find. Never use leaded gasoline or any other fuel not recommended in the previous text on fuel. Costly repairs caused by use of improper fuel would not be covered by the vehicle warranty. To check the fuel availability, ask an auto club, or contact a major oil company that does business in the country where you will be driving.


5-7


Filling the Tank


{ CAUTION:


Fuel vapor burns violently and a fuel fire can cause bad injuries. To help avoid injuries to you and others, read and follow all the instructions on the pump island. Turn off the engine when you are refueling. Do not smoke if you are near fuel or refueling the vehicle. Do not use cellular phones. Keep sparks, flames, and smoking materials away from fuel. Do not leave the fuel pump unattended when refueling the vehicle. This is against the law in some places. Do not re-enter the vehicle while pumping fuel. Keep children away from the fuel pump; never let children pump fuel.


5-8


The tethered fuel cap is located behind a hinged fuel door on the driver side of the vehicle. To remove the fuel cap, turn it slowly counterclockwise. While refueling, hang the tethered fuel cap from the hook on the fuel door.


{ CAUTION:


Fuel can spray out on you if you open the fuel cap too quickly. If you spill fuel and then something ignites it, you could be badly burned. This spray can happen if the tank is nearly full, and is more likely in hot weather. Open the fuel cap slowly and wait for any hiss noise to stop. Then unscrew the cap all the way.


Be careful not to spill fuel. Do not top off or overfill the tank and wait a few seconds after you have finished pumping before removing the nozzle. Clean fuel from painted surfaces as soon as possible. See Washing Your Vehicle on page 5-93. When replacing the fuel cap, turn it clockwise until it clicks. Make sure the cap is fully installed. The diagnostic system can determine if the fuel cap has been left off or improperly installed. This would allow fuel to evaporate into the atmosphere. See Malfunction Indicator Lamp on page 3-29.


The vehicle has a Driver Information Center (DIC). The CHECK GAS CAP message displays if the fuel cap is not properly installed. See DIC Warnings and Messages on page 3-37 for more information.


{ CAUTION:


If a fire starts while you are refueling, do not remove the nozzle. Shut off the flow of fuel by shutting off the pump or by notifying the station attendant. Leave the area immediately.


If you need a new fuel cap, be sure to get


Notice: the right type. Your dealer/retailer can get one for you. If you get the wrong type, it may not fit properly. This may cause the malfunction indicator lamp to light and may damage the fuel tank and emissions system. See Malfunction Indicator Lamp on page 3-29.


5-9


Filling a Portable Fuel Container


{ CAUTION:


Never fill a portable fuel container while it is in the vehicle. Static electricity discharge from the container can ignite the fuel vapor. You can be badly burned and the vehicle damaged if this occurs. To help avoid injury to you and others:


(cid:129) Dispense fuel only into approved containers. (cid:129) Do not fill a container while it is inside a


vehicle, in a vehicle’s trunk, pickup bed, or on any surface other than the ground.


(cid:129) Bring the fill nozzle in contact with the inside of the fill opening before operating the nozzle. Contact should be maintained until the filling is complete.


(cid:129) Do not smoke while pumping fuel. (cid:129) Do not use a cellular phone while


pumping fuel.


Checking Things Under the Hood


{ CAUTION:


An electric fan under the hood can start up and injure you even when the engine is not running. Keep hands, clothing, and tools away from any underhood electric fan.


{ CAUTION:


Things that burn can get on hot engine parts and start a fire. These include liquids like fuel, oil, coolant, brake fluid, windshield washer and other fluids, and plastic or rubber. You or others could be burned. Be careful not to drop or spill things that will burn onto a hot engine.


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Hood Release To open the hood, do the following:


2. Pull down on the rear


edge of the lever to release the hood latch.


1. Locate the interior


hood release lever. It is located below the instrument panel on the driver’s side of the vehicle.


3. Go to the side of the vehicle and pull up on the


rear edge of the hood, near the windshield to open the hood.


Notice: Closing the hood with the doors open may damage the hood and/or doors. Always close the doors before closing the hood. Before closing the hood, be sure all the filler caps are on properly. Then, pull the hood down and close it firmly.


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Engine Compartment Overview When you open the hood on the 2.4L L4 engine, this is what you will see:


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A. Windshield Washer Fluid Reservoir. See “Adding


Washer Fluid” under Windshield Washer Fluid on page 5-31.


B. Coolant Surge Tank and Pressure Cap. See Cooling


System on page 5-23.


C. Brake Master Cylinder Reservoir. See “Brake Fluid”


under Brakes on page 5-32 and Hydraulic Clutch on page 5-23.


D. Engine Oil Dipstick (Out of View). See “Checking


Engine Oil” under Engine Oil on page 5-15.


E. Engine Air Cleaner/Filter on page 5-21.


F. Engine Oil Fill Cap. See “When to Add Engine Oil”


under Engine Oil on page 5-15.


G. Power Steering Fluid Reservoir. See Power Steering


Fluid on page 5-30.


H. Remote Negative (−) Ground (Out of View). See


Jump Starting on page 5-36.


I. Battery on page 5-35 (Out of View). J. Remote Positive (+) Terminal. See Jump Starting on


page 5-36.


K. Underhood Fuse Block on page 5-101.


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When you open the hood on the 2.0L L4 engine, this is what you will see:


5-14


A. Windshield Washer Fluid Reservoir. See “Adding


Washer Fluid” under Windshield Washer Fluid on page 5-31.


B. Coolant Surge Tank and Pressure Cap. See Cooling


System on page 5-23.


C. Brake Master Cylinder Reservoir. See “Brake Fluid”


under Brakes on page 5-32 and Hydraulic Clutch on page 5-23.


D. Engine Oil Dipstick. See “Checking Engine Oil”


under Engine Oil on page 5-15.


E. Engine Air Cleaner/Filter on page 5-21. F. Engine Oil Fill Cap. See “When to Add Engine Oil”


under Engine Oil on page 5-15.


G. Power Steering Fluid Reservoir. See Power Steering


Fluid on page 5-30.


H. Remote Negative (−) Ground (Out of View). See


Jump Starting on page 5-36.


I. Battery on page 5-35 (Out of View). J. Remote Positive (+) Terminal. See Jump Starting on


page 5-36.


K. Underhood Fuse Block on page 5-101.


Engine Oil Checking Engine Oil It is a good idea to check the engine oil every time you get fuel. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. The engine oil dipstick handle is a yellow loop. See Engine Compartment Overview on page 5-12 for the location of the engine oil dipstick. 1. Turn off the engine and give the oil several minutes to drain back into the oil pan. If you do not do this, the oil dipstick might not show the actual level.


2. Pull the dipstick and clean it with a paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down and check the level.


5-15


When to Add Engine Oil


If the oil is below the MIN (minimum) mark, add at least one quart/liter of the recommended oil. This section explains what kind of oil to use. For engine oil crankcase capacity, see Capacities and Specifications on page 5-104. Notice: Do not add too much oil. If the engine has so much oil that the oil level gets above the upper mark that shows the proper operating range, the engine could be damaged.


2.4L L4 Engine


2.0L L4 Engine


See Engine Compartment Overview on page 5-12 for the location of the engine oil fill cap. Add enough oil to put the level somewhere in the proper operating range. Push the dipstick all the way back in when you are through.


5-16


What Kind of Engine Oil to Use For Vehicles With the 2.0L L4 Engine Look for three things:


Notice: Using oils that do not have the GM4718M Standard designation can cause engine damage not covered by the vehicle warranty. (cid:129) SAE 5W-30


SAE 5W-30 is best for the vehicle. These numbers on an oil container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 20W-50.


(cid:129) American Petroleum Institute (API) starburst


symbol


Oils meeting these requirements should have the starburst symbol on the container. This symbol indicates that the oil has been certified by the American Petroleum Institute (API).


(cid:129) GM4718M


This vehicle’s engine requires a special oil meeting GM Standard GM4718M, such as Mobil 1® or equivalent. Oils meeting this standard may be identified as synthetic. However, not all synthetic oils will meet this GM standard. Use only an oil that meets GM Standard GM4718M.


This vehicle’s engine was filled at the factory with a synthetic oil meeting all requirements for this vehicle. Substitute Engine Oil: When adding oil to maintain engine oil level, oil meeting GM Standard GM4718M might not be available. You can add substitute oil designated SAE 5W-30 with the starburst symbol at all temperatures. Substitute oil not meeting GM Standard GM4718M should not be used for an oil change.


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(cid:129) American Petroleum Institute (API) starburst symbol


Oils meeting these requirements should have the starburst symbol on the container. This symbol indicates that the oil has been certified by the American Petroleum Institute (API).


Notice: Use only engine oil identified as meeting GM Standard GM6094M and showing the American Petroleum Institute Certified For Gasoline Engines starburst symbol. Failure to use the recommended oil can result in engine damage not covered by the vehicle warranty.


For Vehicles With the 2.4L L4 Engine Look for three things:


(cid:129) GM6094M


Use only an oil that meets GM Standard GM6094M.


(cid:129) SAE 5W-30


SAE 5W-30 is best for the vehicle. These numbers on an oil container show its viscosity, or thickness. Do not use other viscosity oils such as SAE 20W-50.


5-18


Cold Temperature Operation For Vehicles With the 2.4L L4 Engine If in an area of extreme cold, where the temperature falls below −20°F (−29°C), use either an SAE 5W-30
synthetic oil or an SAE 0W-30 engine oil. Both provide easier cold starting for the engine at extremely low temperatures. Always use an oil that meets the required specification, GM6094M. See “What Kind of Engine Oil to Use” for more information. Engine Oil Additives / Engine Oil Flushes Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all that is needed for good performance and engine protection. Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.


Engine Oil Life System When to Change Engine Oil This vehicle has the Engine Oil Life System, a computer system that indicates when to change the engine oil and filter. This is based on engine revolutions and engine temperature, and not on mileage. Based on driving conditions, the mileage at which an oil change is indicated can vary considerably. For the oil life system to work properly, the system must be reset every time the oil is changed. When the system has calculated that oil life has been diminished, it indicates that an oil change is necessary. A CHANGE OIL SOON message comes on. See DIC Warnings and Messages on page 3-37. Change the oil as soon as possible within the next 600 miles (1 000 km). It is possible that, if driving under the best conditions, the oil life system might not indicate that an oil change is necessary for over a year. However, the engine oil and filter must be changed at least once a year and at this time the system must be reset. Your dealer/retailer has trained service people who will perform this work using genuine parts and reset the system. It is also important to check the oil regularly and keep it at the proper level. If the system is ever reset accidentally, the oil must be changed at 3,000 miles (5 000 km) since the last oil change. Remember to reset the oil life system whenever the oil is changed.


5-19


What to Do with Used Oil Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer. Do not let used oil stay on your skin for very long. Clean your skin and nails with soap and water, or a good hand cleaner. Wash or properly dispose of clothing or rags containing used engine oil. See the manufacturer’s warnings about the use and disposal of oil products. Used oil can be a threat to the environment. If you change your own oil, be sure to drain all the oil from the filter before disposal. Never dispose of oil by putting it in the trash, pouring it on the ground, into sewers, or into streams or bodies of water. Recycle it by taking it to a place that collects used oil.


How to Reset the Engine Oil Life System The Engine Oil Life System calculates when to change your engine oil and filter based on vehicle use. Whenever the oil is changed, reset the system so it can calculate when the next oil change is required. If a situation occurs where the oil is changed prior to a CHANGE OIL SOON message being turned on, reset the system. After changing the engine oil, the system must be reset: 1. Turn the ignition to ON/RUN, with the engine off. 2. Press the information and reset buttons on the


Driver Information Center (DIC) at the same time to enter the personalization menu. See DIC Vehicle Personalization on page 3-41.


3. Press the information button to scroll through the


available personalization menu modes until the DIC display shows OIL-LIFE RESET.


4. Press and hold the reset button until the DIC


display shows ACKNOWLEDGED. This will tell you the system has been reset. 5. Turn the key to LOCK/OFF. If the CHANGE OIL SOON message comes back on when the vehicle is started, the engine oil life system has not reset. Repeat the reset procedure.


5-20


Engine Air Cleaner/Filter


2.4L L4 Engine


2.0L L4 Engine


See Engine Compartment Overview on page 5-12 for the location of the engine air cleaner/filter. When to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter element at each scheduled Maintenance II service interval and replace the air cleaner/filter element at the first oil change after 50,000 miles (80 000 km). If you are driving in dusty/dirty conditions, inspect the filter at each engine oil change.


5-21


Automatic Transmission Fluid It is not necessary to check the transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take your vehicle to a dealer/retailer and have it repaired as soon as possible. Change the fluid and filter at the intervals listed in the Maintenance Schedule. See Scheduled Maintenance on page 6-4. Be sure to use the transmission fluid listed in Recommended Fluids and Lubricants on page 6-12. Notice: Use of the incorrect automatic transmission fluid may damage the vehicle, and the damages may not be covered by the vehicle’s warranty. Always use the automatic transmission fluid listed in Recommended Fluids and Lubricants on page 6-12.


How to Inspect the Engine Air Cleaner/Filter To inspect the air cleaner/filter remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains caked with dirt, a new filter is required. To inspect or replace the filter, open the clamps that hold the cover on and lift off the cover. Be sure to reinstall the cover tightly.


{ CAUTION:


Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air; it helps to stop flames if the engine backfires. If it is not there and the engine backfires, you could be burned. Do not drive with it off, and be careful working on the engine with the air cleaner/filter off.


If the air cleaner/filter is off, a backfire can


Notice: cause a damaging engine fire. And, dirt can easily get into the engine, which will damage it. Always have the air cleaner/filter in place when you are driving.


5-22


Cooling System The Cooling System allows the engine to maintain the correct working temperature.


Manual Transmission Fluid It is not necessary to check the manual transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to a dealer/retailer for service. Have it repaired as soon as possible. You may also have the fluid level checked by your dealer/retailer when the oil is changed. See Recommended Fluids and Lubricants on page 6-12
for the proper fluid to use.


Hydraulic Clutch The hydraulic clutch linkage in your vehicle is self-adjusting. This system does not have its own reservoir. It receives fluid from the brake master cylinder reservoir. See Brakes on page 5-32 for more information.


2.4 L4 Engine


A. Electric Engine Cooling Fan (Out of View) B. Coolant Surge Tank and Pressure Cap


5-23


{ CAUTION:


Heater and radiator hoses, and other engine parts, can be very hot. Do not touch them. If you do, you can be burned. Do not run the engine if there is a leak. If you run the engine, it could lose all coolant. That could cause an engine fire, and you could be burned. Get any leak fixed before you drive the vehicle.


Notice: Using coolant other than DEX-COOL® can cause premature engine, heater core, or radiator corrosion. In addition, the engine coolant could require changing sooner, at 30,000 miles (50 000 km) or 24 months, whichever occurs first. Any repairs would not be covered by the vehicle warranty. Always use DEX-COOL® (silicate-free) coolant in the vehicle.


2.0L L4 Engine


A. Coolant Surge Tank and Pressure Cap B. Electric Engine Cooling Fan (Out of View)


{ CAUTION:


An electric engine cooling fan under the hood can start up even when the engine is not running and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.


5-24


Engine Coolant The cooling system in the vehicle is filled with DEX-COOL® engine coolant. This coolant is designed to remain in the vehicle for five years or 150,000 miles (240 000 km), whichever occurs first. The following explains the cooling system and how to check and add coolant when it is low. If there is a problem with engine overheating, see Engine Overheating on page 5-29. What to Use


{ CAUTION:


Adding only plain water to the cooling system can be dangerous. Plain water, or some other liquid such as alcohol, can boil before the proper coolant mixture will. The vehicle’s coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, the engine could get too hot but you would not get the overheat warning. The engine could catch fire and you or others could be burned. Use a 50/50 mixture of clean, drinkable water and DEX-COOL® coolant.


Use a 50/50 mixture of clean, drinkable water and DEX-COOL® coolant. If using this mixture, nothing else needs to be added. This mixture: (cid:129) Gives freezing protection down to −34°F (−37°C),


outside temperature.


(cid:129) Gives boiling protection up to 265°F (129°C),


engine temperature.


If an improper coolant mixture is used, the


(cid:129) Protects against rust and corrosion. (cid:129) Will not damage aluminum parts. (cid:129) Helps keep the proper engine temperature. Notice: engine could overheat and be badly damaged. The repair cost would not be covered by the vehicle warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core, and other parts. Notice: in the vehicle’s cooling system, the vehicle could be damaged. Use only the proper mixture of the engine coolant listed in this manual for the cooling system. See Recommended Fluids and Lubricants on page 6-12 for more information.


If extra inhibitors and/or additives are used


5-25


Checking Coolant The vehicle must be on a level surface when checking the coolant level.


The coolant surge tank is located in the engine compartment on the driver’s side of the vehicle. See Engine Compartment Overview on page 5-12 for more information on location. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down. If coolant is visible but the coolant level is not at or above the FULL COLD mark, add a 50/50 mixture of clean,


5-26


drinkable water and DEX-COOL® coolant at the coolant surge tank, but be sure the cooling system is cool before this is done. See Engine Coolant Engine Coolant for more information. The vehicle must be on a level surface. When your engine is cold, the coolant level should be at the COLD FILL line. Do not overfill the surge tank. Too much coolant can result in an overflow condition when the fluid is hot. How to Add Coolant to the Surge Tank


{ CAUTION:


You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol and it will burn if the engine parts are hot enough. Do not spill coolant on a hot engine.


Notice: This vehicle has a specific coolant fill procedure. Failure to follow this procedure could cause the engine to overheat and be severely damaged.


If coolant is needed, add the proper DEX-COOL® coolant mixture at the coolant surge tank. 1. Remove the coolant surge tank pressure cap when the cooling system, including the coolant surge tank pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly counterclockwise about two or two and one-half turns. If you hear a hiss, wait for that to stop. This will allow any pressure still left to be vented out the discharge hose.


2. Then keep turning the


pressure cap slowly, and remove it.


{ CAUTION:


An electric engine cooling fan under the hood can start up even when the engine is not running and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.


{ CAUTION:


Steam and scalding liquids from a hot cooling system can blow out and burn you badly. They are under pressure, and if you turn the surge tank pressure cap — even a little — they can come out at high speed. Never turn the cap when the cooling system, including the surge tank pressure cap, is hot. Wait for the cooling system and surge tank pressure cap to cool if you ever have to turn the pressure cap.


5-27


4. With the coolant surge tank pressure cap off, start


the engine and let it run until you can feel the upper radiator hose getting hot. Watch out for the engine cooling fan. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower than the COLD FILL line, add more of the proper mixture to the coolant surge tank until the level reaches the COLD FILL line.


5. Then replace the pressure cap. Be sure the pressure cap is hand-tight and fully seated.


If the pressure cap is not tightly installed,


Notice: coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured.


See your dealer/retailer, if necessary.


3. Fill the coolant surge tank with the proper mixture,


to the COLD FILL line. Wait about five minutes, then check to see if the level is below the COLD FILL line. If the level is below the line, add additional coolant to bring the level up to the line. Repeat this procedure until the level remains constant at the COLD FILL line for at least five minutes.


5-28


Engine Overheating The vehicle has an indicator to warn of engine overheating. There is an engine coolant temperature warning light on your vehicle’s instrument panel. See Engine Coolant Temperature Warning Light on page 3-28 for more information. You may decide not to lift the hood when this warning appears, but instead get service help right away. See Roadside Assistance Program on page 7-6. If you do decide to lift the hood, make sure the vehicle is parked on a level surface. Then check to see if the engine cooling fan is running. If the engine is overheating, the fan should be running. If not, do not continue to run the engine and have the vehicle serviced. Notice: Engine damage from running the engine without coolant is not covered by the warranty. Notice: driven with no coolant, your vehicle can be badly damaged. The costly repairs would not be covered by the vehicle warranty.


If the engine catches fire because of being


If Steam Is Coming From The Engine Compartment


{ CAUTION:


Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Just turn it off and get everyone away from the vehicle until it cools down. Wait until there is no sign of steam or coolant before you open the hood. If you keep driving when your engine is overheated, the liquids in it can catch fire. You or others could be badly burned. Stop your engine if it overheats, and get out of the vehicle until the engine is cool.


5-29


If No Steam Is Coming From The Engine Compartment If an engine overheat warning is displayed but no steam can be seen or heard, the problem may not be too serious. Sometimes the engine can get a little too hot when the vehicle: (cid:129) Climbs a long hill on a hot day. (cid:129) Stops after high-speed driving. Idles for long periods in traffic.


If the overheat warning is displayed with no sign of steam: 1. Turn the air conditioning off. 2. Turn the heater on to the highest temperature and


to the highest fan speed. Open the windows as necessary.


3. In heavy traffic, let the engine idle in N (Neutral)


while stopped. If it is safe to do so, pull off the road, shift to P (Park) or N (Neutral) and let the engine idle.


If the temperature overheat gage is no longer in the overheat zone or an overheat warning no longer displays, the vehicle can be driven. Continue to drive the vehicle slow for about 10 minutes. Keep a safe vehicle distance from the car in front of you. If the warning does not come back on, continue to drive normally. If the warning continues, pull over, stop, and park the vehicle right away. If there is no sign of steam, idle the engine for three minutes while parked. If the warning is still displayed, turn off the engine until it cools down.


Power Steering Fluid


See Engine Compartment Overview on page 5-12 for reservoir location.


5-30


(cid:129) When to Check Power Steering Fluid The power steering fluid does not need to be checked regularly, unless there is a suspected leak or an unusual noise. If there is fluid loss, have the system inspected and repaired. How to Check Power Steering Fluid To check the power steering fluid: 1. Turn the engine off and let it cool down. 2. Clean the top and cap of the reservoir. 3. Remove the cap and wipe the dipstick with a


clean rag.


4. Replace the cap and completely tighten. 5. Remove the cap again and check the fluid level on


the dipstick.


The level should be between the COLD and HOT marks. If necessary, add only enough fluid to bring the level up to the COLD mark.


What to Use To determine what kind of fluid to use, see Recommended Fluids and Lubricants on page 6-12. Always use the proper fluid. Notice: Use of the incorrect fluid may damage the vehicle and the damages may not be covered by the vehicle’s warranty. Always use the correct fluid listed in Recommended Fluids and Lubricants on page 6-12.


Windshield Washer Fluid What to Use When you need windshield washer fluid, be sure to read the manufacturer’s instructions before use. If you will be operating your vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing.


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Adding Washer Fluid


Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 5-12 for reservoir location.


Brakes Brake Fluid


The brake master cylinder reservoir is filled with DOT-3 brake fluid. See Engine Compartment Overview on page 5-12 for the location of the reservoir.


Notice: (cid:129) When using concentrated washer fluid, follow


the manufacturer’s instructions for adding water.


(cid:129) Do not mix water with ready-to-use washer fluid.


Water can cause the solution to freeze and damage your washer fluid tank and other parts of the washer system. Also, water does not clean as well as washer fluid. Fill the washer fluid tank only three-quarters full when it is very cold. This allows for fluid expansion if freezing occurs, which could damage the tank if it is completely full.


(cid:129) Do not use engine coolant (antifreeze) in your windshield washer. It can damage the vehicle’s windshield washer system and paint.


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There are only two reasons why the brake fluid level in the reservoir might go down:


The brake fluid level goes down because of normal brake lining wear. When new linings are installed, the fluid level goes back up.


(cid:129) A fluid leak in the brake and/or clutch hydraulic system can also cause a low fluid level. Have the brake and/or clutch hydraulic system fixed, since a leak means that sooner or later the brakes and/or clutch will not work well.


(cid:129) (cid:129) Do not top off the brake/clutch fluid. Adding fluid does not correct a leak. If fluid is added when the brake linings are worn, there will be too much fluid when new brake linings are installed. Add or remove fluid, as necessary, only when work is done on the brake/clutch hydraulic system.


{ CAUTION:


If too much brake fluid is added, it can spill on the engine and burn, if the engine is hot enough. You or others could be burned, and the vehicle could be damaged. Add brake fluid only when work is done on the brake and/or clutch hydraulic system.


When the brake fluid falls to a low level, the brake warning light comes on. See Brake System Warning Light on page 3-25. What to Add Use only new DOT-3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 6-12. Always clean the brake fluid reservoir cap and the area around the cap before removing it. This helps keep dirt from entering the reservoir.


{ CAUTION:


With the wrong kind of fluid in the brake or clutch hydraulic system, the brakes or clutch might not work well. This could cause a crash. Always use the proper brake fluid.


Notice: (cid:129) Using the wrong fluid can badly damage brake or clutch hydraulic system parts. For example, just a few drops of mineral-based oil, such as engine oil, in the brake or clutch hydraulic system can damage brake or clutch hydraulic system parts so badly that they will have to be replaced. Do not let someone put in the wrong kind of fluid. If brake fluid is spilled on the vehicle’s painted surfaces, the paint finish can be damaged. Be careful not to spill brake fluid on the vehicle. If you do, wash it off immediately. See Washing Your Vehicle on page 5-93.


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(cid:129) Brake Wear This vehicle has disc brakes. Disc brake pads have built-in wear indicators that make a high-pitched warning sound when the brake pads are worn and new pads are needed. The sound can come and go or be heard all the time the vehicle is moving, except when applying the brake pedal firmly.


{ CAUTION:


The brake wear warning sound means that soon the brakes will not work well. That could lead to an accident. When the brake wear warning sound is heard, have the vehicle serviced.


Notice: Continuing to drive with worn-out brake pads could result in costly brake repair. Some driving conditions or climates can cause a brake squeal when the brakes are first applied or lightly applied. This does not mean something is wrong with the brakes. Properly torqued wheel nuts are necessary to help prevent brake pulsation. When tires are rotated, inspect brake pads for wear and evenly tighten wheel nuts in the proper sequence to torque specifications in Capacities and Specifications on page 5-104.


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Brake linings should always be replaced as complete axle sets. Brake Pedal Travel See your dealer/retailer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign that brake service might be required. Brake Adjustment Every time the brakes are applied, with or without the vehicle moving, the brakes adjust for wear. Replacing Brake System Parts The braking system on a vehicle is complex. Its many parts have to be of top quality and work well together if the vehicle is to have really good braking. The vehicle was designed and tested with top-quality brake parts. When parts of the braking system are replaced — for example, when the brake linings wear down and new ones are installed — be sure to get new approved replacement parts. If this is not done, the brakes might not work properly. For example, if someone puts in brake linings that are wrong for the vehicle, the balance between the front and rear brakes can change — for the worse. The braking performance expected can change in many other ways if the wrong replacement brake parts are installed.


Battery This vehicle has a maintenance free battery. When it is time for a new battery, see your dealer/retailer for one that has the replacement number shown on the original battery’s label. See Engine Compartment Overview on page 5-12 for battery location. Warning: Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.


Vehicle Storage


{ CAUTION:


Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 5-36 for tips on working around a battery without getting hurt.


Infrequent Usage: If the vehicle is driven infrequently, remove the black, negative (−) cable from the battery. This helps keep the battery from running down. Extended Storage: For extended storage of the vehicle, remove the black, negative (−) cable from the battery or use a battery trickle charger. This helps maintain the charge of the battery over an extended period of time.


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Jump Starting If the vehicle’s battery has run down, you may want to use another vehicle and some jumper cables to start the vehicle. Be sure to use the following steps to do it safely.


{ CAUTION:


Batteries can hurt you. They can be dangerous because:


(cid:129) They contain acid that can burn you. (cid:129) They contain gas that can explode or ignite. (cid:129) They contain enough electricity to burn you. If you do not follow these steps exactly, some or all of these things can hurt you.


Ignoring these steps could result in costly


Notice: damage to the vehicle that would not be covered by the warranty. Trying to start the vehicle by pushing or pulling it will not work, and it could damage the vehicle. 1. Check the other vehicle. It must have a 12-volt


battery with a negative ground system.


If the other vehicle’s system is not a 12-volt


Notice: system with a negative ground, both vehicles can be damaged. Only use vehicles with 12-volt systems with negative grounds to jump start your vehicle. 2. Get the vehicles close enough so the jumper cables can reach, but be sure the vehicles are not touching each other. If they are, it could cause a ground connection you do not want. You would not be able to start the vehicle, and the bad grounding could damage the electrical systems. To avoid the possibility of the vehicles rolling, set the parking brake firmly on both vehicles involved in the jump start procedure. Put an automatic transmission in P (Park) or a manual transmission in N (Neutral) before setting the parking brake.


If you leave the radio or other accessories


Notice: on during the jump starting procedure, they could be damaged. The repairs would not be covered by the warranty. Always turn off the radio and other accessories when jump starting the vehicle. 3. Turn off the ignition on both vehicles. Unplug


unnecessary accessories plugged into the cigarette lighter or the accessory power outlet. Turn off the radio and all lamps that are not needed. This will avoid sparks and help save both batteries. And it could save the radio!


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4. Open the hood on the other vehicle and locate the positive (+) and negative (−) terminal locations on that vehicle. You will not need to access your battery for jump starting. The vehicle has a remote positive (+) and a remote negative (−) jump starting terminal. Locate the remote positive (+) terminal which is located under a red plastic cover on the engine compartment fuse block. Open the red plastic cover to access the terminal.


Do not remove fuse block cover to jump start the vehicle.


Locate the remote negative (−) ground bracket which is located in the rear of the engine compartment, on the passenger side of the vehicle, and is marked GND (−).


See Engine Compartment Overview on page 5-12
for more information on the location of the positive (+) and negative (−) terminals on the vehicle.


5-37


{ CAUTION:


CAUTION:


(Continued)


An electric fan can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan.


Battery fluid contains acid that can burn you. Do not get it on you. If you accidentally get it in your eyes or on your skin, flush the place with water and get medical help immediately.


{ CAUTION:


{ CAUTION:


Using a match near a battery can cause battery gas to explode. People have been hurt doing this, and some have been blinded. Use a flashlight if you need more light. Be sure the battery has enough water. You do not need to add water to the battery installed in your new vehicle. But if a battery has filler caps, be sure the right amount of fluid is there. If it is low, add water to take care of that first. If you don’t, explosive gas could be present.


CAUTION:


(Continued)


Fans or other moving engine parts can injure you badly. Keep your hands away from moving parts once the engine is running.


5. Check that the jumper cables do not have loose or


missing insulation. If they do, you could get a shock. The vehicles could be damaged too. Before you connect the cables, here are some basic things you should know. Positive (+) will go to positive (+) or to a remote positive (+) terminal if the vehicle has one. Negative (−) will go to a heavy, unpainted metal engine part or to a remote negative (−) terminal if the vehicle has one.


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Do not connect positive (+) to negative (−) or you will get a short that would damage the battery and maybe other parts too. And do not connect the negative (−) cable to the negative (−) terminal on the dead battery because this can cause sparks.


6. Connect the red positive (+) cable to the positive (+)


terminal location on the vehicle with the dead battery. Use a remote positive (+) terminal if the vehicle has one.


7. Do not let the other end touch metal. Connect it to the positive (+) terminal of the good battery. Use a remote positive (+) terminal if the vehicle has one.


8. Now connect the black negative (−) cable to the negative (−) terminal of the good battery. Use a remote negative (−) terminal if the vehicle has one. Do not let the other end touch anything until the next step. The other end of the negative (−) cable does not go to the dead battery. It goes to a heavy, unpainted metal engine part or to a remote negative (−) terminal on the vehicle with the dead battery.


9. Connect the other end of the negative (−) cable to


the negative (−) terminal location on the vehicle with the dead battery. Your vehicle has a remote negative (−) ground bracket for this purpose.


10. Now start the vehicle with the good battery and run


the engine for a while.


11. Try to start the vehicle that had the dead battery. If


it will not start after a few tries, it probably needs service.


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To disconnect the jumper cables from both vehicles: 1. Disconnect the black negative (−) cable from


the vehicle that had the dead battery.


2. Disconnect the black negative (−) cable from the


vehicle with the good battery.


3. Disconnect the red positive (+) cable from the


vehicle with the good battery.


4. Disconnect the red positive (+) cable from the other


vehicle.


5. Return the positive (+) terminal cover to its original


position.


Rear Axle When to Check Lubricant It is not necessary to regularly check rear axle fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspected and repaired.


If the jumper cables are connected or


Notice: removed in the wrong order, electrical shorting may occur and damage the vehicle. The repairs would not be covered by your warranty. Always connect and remove the jumper cables in the correct order, making sure that the cables do not touch each other or other metal.


Jumper Cable Removal


A. Heavy, Unpainted Metal Engine Part or Remote


Negative (−) Terminal


B. Good Battery or Remote Positive (+) and Remote


Negative (−) Terminals


C. Dead Battery or Remote Positive (+) Terminal


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How to Check Lubricant


To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the filler plug hole, located on the rear axle, you’ll need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole.


What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See Recommended Fluids and Lubricants on page 6-12. Headlamp Aiming Headlamp aim has been preset at the factory and should need no further adjustment. However, if your vehicle is damaged in a crash, the headlamp aim may be affected. Aim adjustment to the low-beam headlamps may be necessary if oncoming drivers flash their high-beam headlamps at you (for vertical aim). If the headlamps need to be re-aimed, it is recommended that you take the vehicle to your dealer/retailer for service.


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Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 5-45. For any bulb changing procedure not listed in this section, contact your dealer/retailer.


Headlamps To replace the low/high-beam/Daytime Running Lamps (DRL) headlamp bulb: 1. Open the hood. See Hood Release on page 5-11.


Halogen Bulbs


{ CAUTION:


Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb package.


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2. Turn the bulb socket counterclockwise and pull it


from the headlamp assembly.


3. Holding the base of the socket, pull the old bulb


from the bulb socket.


4. Push the new bulb straight into the bulb socket until


it connects.


5. Push the bulb socket into the headlamp assembly


and turn it clockwise to lock it into place.


Front Turn Signal, Parking and Fog Lamps


A. Front Turn Signal/


Parking Lamp


B. Fog Lamp (If Equipped)


6. Push the new bulb straight into the bulb socket until


it connects.


7. Reconnect the bulb socket to the wiring harness. 8. Push the bulb socket straight into the bulb assembly


and turn it clockwise to lock it into place.


Taillamps, Turn Signal, and Stoplamps (Base Level) To replace one of these bulbs: 1. Open the trunk. See Trunk on page 2-8.


To replace one of these bulbs:


1. Open the hood. See Hood Release on page 5-11. 2. Locate the bulb assembly under the front bumper. 3. Turn the bulb socket counterclockwise and pull


out the bulb assembly.


4. Disconnect the bulb socket from the wiring harness. 5. Pull the old bulb straight out of the bulb socket.


2. From inside the vehicle, remove the two screws


from the taillamp assembly.


3. Remove the taillamp assembly.


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4. Turn the bulb socket counterclockwise and pull it


straight out of the taillamp assembly.


Back-Up Lamps


5. Pull the old bulb straight out of the bulb socket. 6. Push the new bulb straight into the bulb socket until


it connects.


7. Push the bulb socket straight into the taillamp


assembly and turn it clockwise to lock it into place.


8. Reinstall the taillamp assembly and the two screws


that holds the taillamp assembly from inside the vehicle.


Taillamps, Turn Signal, and Stoplamps (Removable Hardtop) If your vehicle has a removable hardtop, see your dealer/retailer to replace these bulbs.


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The back-up lamps are located in the rear bumper.


To replace a bulb:


1. Locate the bulb socket under and behind the rear


bumper.


2. Turn it counterclockwise and pull it straight out of


the lamp assembly.


3. Pull the old bulb straight out of the bulb socket. 4. Push the new bulb straight into the bulb socket until


it connects.


5. Reinstall the bulb socket by lining up the tabs in the


lamp assembly and turn it clockwise to secure it.


License Plate Lamp To replace the license plate lamp bulb:


1. Remove the license plate assembly by turning the


two screws counterclockwise.


2. Turn and pull the license plate lamp forward


through the fascia opening.


3. Turn the bulb socket counterclockwise and pull the


bulb straight out of the socket.


4. Push the new bulb in and turn it clockwise to install. 5. Replace the license plate lamp by pushing it


through the fascia opening.


6. Turn the two screws that hold the license plate


lamp clockwise to reinstall.


Replacement Bulbs


Exterior Lamp


Bulb Number


Back-Up Lamps Fog Lamp Front Parking/Turn Signal Lamp Front Sidemarker Lamp Headlamps, High/Low-Beam/ Daytime Running Lights License Plate Lamp Stoplamp, Taillamp and Turn Signal Lamp * Uplevel Model


3047
898*


3757NAK


194


H13


168


3157K


For replacement bulbs not listed here, contact your dealer/retailer.


5-45


Windshield Wiper Blade Replacement Windshield wiper blades should be inspected for wear and cracking. See Scheduled Maintenance on page 6-4
for more information. Replacement blades come in different types and are removed in different ways. For proper type and length, see Maintenance Replacement Parts on page 6-14. To replace the windshield wiper blade assembly:


1. Lift the wiper arm away from the windshield.


5-46


2. Push the release lever (B) to disengage the hook and push the wiper arm (A) out of the blade (C). 3. Push the new wiper blade securely on the wiper


arm until you hear the release lever click into place.


Tires Your new vehicle comes with high-quality tires made by a leading tire manufacturer. If you ever have questions about your tire warranty and where to obtain service, see your vehicle Warranty booklet for details. For additional information refer to the tire manufacturer.


{ CAUTION:


Poorly maintained and improperly used tires are dangerous.


(cid:129) Overloading your vehicle’s tires can cause overheating as a result of too much flexing. You could have an air-out and a serious accident. See Loading the Vehicle on page 4-20.


CAUTION:


(Continued)


CAUTION:


(Continued)


(cid:129) Underinflated tires pose the same danger as overloaded tires. The resulting accident could cause serious injury. Check all tires frequently to maintain the recommended pressure. Tire pressure should be checked when your vehicle’s tires are cold. See Inflation - Tire Pressure on page 5-53.


(cid:129) Overinflated tires are more likely to be cut,


punctured, or broken by a sudden impact — such as when you hit a pothole. Keep tires at the recommended pressure. (cid:129) Worn, old tires can cause accidents. If the


tire’s tread is badly worn, or if your vehicle’s tires have been damaged, replace them.


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If the vehicle has low-profile tires,


Low-Profile Tires If your vehicle has P245/45R18 size tires, they are classified as low-profile tires. These tires are designed for very responsive driving on wet or dry pavement. You may also notice more road noise with low-profile performance tires and that they tend to wear faster. Notice: they are more susceptible to damage from road hazards or curb impact than standard profile tires. Tire and/or wheel assembly damage can occur when coming into contact with road hazards like, potholes, or sharp edged objects, or when sliding into a curb. The vehicle warranty does not cover this type of damage. Keep tires set to the correct inflation pressure and, when possible avoid contact with curbs, potholes, and other road hazards.


Winter Tires If your vehicle has P245/45R18 size tires, they are classified as low-profile performance tires. These tires are designed for very responsive driving on wet or dry pavement. If you expect to drive on snow or ice covered roads often, you may want to get winter


tires for your vehicle. The low-profile performance tires may not offer the traction you would like or the same level of performance as winter tires on snow or ice covered roads. Winter tires, in general, are designed for increased traction on snow and ice covered roads. With winter tires, there may be decreased dry road traction, increased road noise, and shorter tire tread life. After switching to winter tires, be alert for changes in vehicle handling and braking. See your dealer/retailer for details regarding winter tire availability and proper tire selection. Also, see Buying New Tires on page 5-63. If you choose to use winter tires: (cid:129) Use tires of the same brand and tread type on all


four wheel positions.


(cid:129) Use only radial ply tires of the same size,


load range, and speed rating as the original equipment tires.


Winter tires with the same speed rating as your original equipment tires may not be available for H, V, W, Y, and ZR speed rated tires. If you choose winter tires with a lower speed rating, never exceed the tire’s maximum speed capability.


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Tire Sidewall Labeling Useful information about a tire is molded into its sidewall. The example below shows a typical passenger (p-metric) tire sidewall.


Passenger (P-Metric) Tire Example


(A) Tire Size: The tire size is a combination of letters and numbers used to define a particular tire’s width, height, aspect ratio, construction type, and service description. See the “Tire Size” illustration later in this section for more detail.


(B) TPC Spec (Tire Performance Criteria Specification): Original equipment tires designed to GM’s specific tire performance criteria have a TPC specification code molded onto the sidewall. GM’s TPC specifications meet or exceed all federal safety guidelines. (C) DOT (Department of Transportation): The Department of Transportation (DOT) code indicates that the tire is in compliance with the U.S. Department of Transportation Motor Vehicle Safety Standards. (D) Tire Identification Number (TIN): The letters and numbers following DOT code are the Tire Identification Number (TIN). The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture. (E) Tire Ply Material: The type of cord and number of plies in the sidewall and under the tread. (F) Uniform Tire Quality Grading (UTQG): Tire manufacturers are required to grade tires based on three performance factors: treadwear, traction and temperature resistance. For more information see Uniform Tire Quality Grading on page 5-65.


5-49


(G) Maximum Cold Inflation Load Limit: Maximum load that can be carried and the maximum pressure needed to support that load. Tire Size The following illustration shows an example of a typical passenger (p-metric) vehicle tire size.


(A) Passenger (P-Metric) Tire: The United States version of a metric tire sizing system. The letter P as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U. S. Tire and Rim Association. (B) Tire Width: The three-digit number indicates the tire section width in millimeters from sidewall to sidewall. (C) Aspect Ratio: A two-digit number that indicates the tire height-to-width measurements. For example, if the tire size aspect ratio is 60, as


5-50


shown in item C of the illustration, it would mean that the tire’s sidewall is 60 percent as high as it is wide. (D) Construction Code: A letter code is used to indicate the type of ply construction in the tire. The letter R means radial ply construction; the letter D means diagonal or bias ply construction; and the letter B means belted-bias ply construction. (E) Rim Diameter: Diameter of the wheel in inches. (F) Service Description: These characters represent the load range and speed rating of the tire. The load index represents the load carry capacity a tire is certified to carry. The load index can range from 1 to 279. The speed rating is the maximum speed a tire is certified to carry a load. Speed ratings range from A to Z.


Tire Terminology and Definitions


Air Pressure: The amount of air inside the tire pressing outward on each square inch of the tire. Air pressure is expressed in pounds per square inch (psi) or kilopascal (kPa).


Accessory Weight: This means the combined weight of optional accessories. Some examples of optional accessories are, automatic transmission, power steering, power brakes, power windows, power seats, and air conditioning. Aspect Ratio: The relationship of a tire’s height to its width. Belt: A rubber coated layer of cords that is located between the plies and the tread. Cords may be made from steel or other reinforcing materials. Bead: The tire bead contains steel wires wrapped by steel cords that hold the tire onto the rim. Bias Ply Tire: A pneumatic tire in which the plies are laid at alternate angles less than 90 degrees to the centerline of the tread. Cold Tire Pressure: The amount of air pressure in a tire, measured in pounds per square inch (psi) or kilopascals (kPa) before a tire has built up heat from driving. See Inflation - Tire Pressure on page 5-53. Curb Weight: The weight of a motor vehicle with standard and optional equipment including the maximum capacity of fuel, oil, and coolant, but without passengers and cargo.


DOT Markings: A code molded into the sidewall of a tire signifying that the tire is in compliance with the U.S. Department of Transportation (DOT) motor vehicle safety standards. The DOT code includes the Tire Identification Number (TIN), an alphanumeric designator which can also identify the tire manufacturer, production plant, brand, and date of production. GVWR: Gross Vehicle Weight Rating. See Loading the Vehicle on page 4-20. GAWR FRT: Gross Axle Weight Rating for the front axle. See Loading the Vehicle on page 4-20. GAWR RR: Gross Axle Weight Rating for the rear axle. See Loading the Vehicle on page 4-20. Intended Outboard Sidewall: The side of an asymmetrical tire, that must always face outward when mounted on a vehicle. Kilopascal (kPa): The metric unit for air pressure. Light Truck (LT-Metric) Tire: A tire used on light duty trucks and some multipurpose passenger vehicles. Load Index: An assigned number ranging from 1 to 279 that corresponds to the load carrying capacity of a tire.


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Maximum Inflation Pressure: The maximum air pressure to which a cold tire can be inflated. The maximum air pressure is molded onto the sidewall. Maximum Load Rating: The load rating for a tire at the maximum permissible inflation pressure for that tire. Maximum Loaded Vehicle Weight: The sum of curb weight, accessory weight, vehicle capacity weight, and production options weight. Normal Occupant Weight: The number of occupants a vehicle is designed to seat multiplied by 150 lbs (68 kg). See Loading the Vehicle on page 4-20. Occupant Distribution: Designated seating positions. Outward Facing Sidewall: The side of an asymmetrical tire that has a particular side that faces outward when mounted on a vehicle. The side of the tire that contains a whitewall, bears white lettering, or bears manufacturer, brand, and/or model name molding that is higher or deeper than the same moldings on the other sidewall of the tire. Passenger (P-Metric) Tire: A tire used on passenger cars and some light duty trucks and multipurpose vehicles.


5-52


Recommended Inflation Pressure: Vehicle manufacturer’s recommended tire inflation pressure as shown on the tire placard. See Inflation - Tire Pressure on page 5-53 and Loading the Vehicle on page 4-20. Radial Ply Tire: A pneumatic tire in which the ply cords that extend to the beads are laid at 90 degrees to the centerline of the tread. Rim: A metal support for a tire and upon which the tire beads are seated. Sidewall: The portion of a tire between the tread and the bead. Speed Rating: An alphanumeric code assigned to a tire indicating the maximum speed at which a tire can operate. Traction: The friction between the tire and the road surface. The amount of grip provided. Tread: The portion of a tire that comes into contact with the road. Treadwear Indicators: Narrow bands, sometimes called wear bars, that show across the tread of a tire when only 1/16 inch (1.6 mm) of tread remains. See When It Is Time for New Tires on page 5-62.


UTQGS (Uniform Tire Quality Grading Standards): A tire information system that provides consumers with ratings for a tire’s traction, temperature, and treadwear. Ratings are determined by tire manufacturers using government testing procedures. The ratings are molded into the sidewall of the tire. See Uniform Tire Quality Grading on page 5-65. Vehicle Capacity Weight: The number of designated seating positions multiplied by 150 lbs (68 kg) plus the rated cargo load. See Loading the Vehicle on page 4-20. Vehicle Maximum Load on the Tire: Load on an individual tire due to curb weight, accessory weight, occupant weight, and cargo weight. Vehicle Placard: A label permanently attached to a vehicle showing the vehicle’s capacity weight and the original equipment tire size and recommended inflation pressure. See “Tire and Loading Information Label” under Loading the Vehicle on page 4-20.


Inflation - Tire Pressure Tires need the correct amount of air pressure to operate effectively. Notice: Do not let anyone tell you that under-inflation or over-inflation is all right. It is not. If your tires do not have enough air (under-inflation), you can get the following: (cid:129) Too much flexing (cid:129) Too much heat (cid:129) Tire overloading (cid:129) Premature or irregular wear (cid:129) Poor handling (cid:129) Reduced fuel economy If your tires have too much air (over-inflation), you can get the following: (cid:129) Unusual wear (cid:129) Poor handling (cid:129) Rough ride (cid:129) Needless damage from road hazards A vehicle specific Tire and Loading Information label is attached to your vehicle. This label shows your vehicle’s original equipment tires and the correct inflation pressures for your tires when they


5-53


are cold. The recommended cold tire inflation pressure, shown on the label, is the minimum amount of air pressure needed to support your vehicle’s maximum load carrying capacity. For additional information regarding how much weight your vehicle can carry, and an example of the Tire and Loading Information label, see Loading the Vehicle on page 4-20. How you load your vehicle affects vehicle handling and ride comfort. Never load your vehicle with more weight than it was designed to carry. When to Check Check your tires once a month or more. How to Check Use a good quality pocket-type gage to check tire pressure. You cannot tell if your tires are properly inflated simply by looking at them. Radial tires may look properly inflated even when they are under-inflated. Check the tire’s inflation pressure when the tires are cold. Cold means your vehicle has been sitting for at least three hours or driven no more than 1 mile (1.6 km). Remove the valve cap from the tire valve stem. Press the tire gage firmly onto the valve to get a pressure measurement. If the cold tire inflation pressure matches the recommended


5-54


pressure on the Tire and Loading Information label, no further adjustment is necessary. If the inflation pressure is low, add air until you reach the recommended amount. If you overfill the tire, release air by pushing on the metal stem in the center of the tire valve. Re-check the tire pressure with the tire gage. Be sure to put the valve caps back on the valve stems. They help prevent leaks by keeping out dirt and moisture.


Tire Pressure Monitor System The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. The TPMS sensors monitor the air pressure in your vehicle’s tires and transmit tire pressure readings to a receiver located in the vehicle. Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label. (If your vehicle has tires of a different size than the size indicated on the vehicle placard or tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.)


As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires is significantly under-inflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale. Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists.


When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly. See Tire Pressure Monitor Operation on page 5-56
for additional information. Federal Communications Commission (FCC) and Industry and Science Canada The Tire Pressure Monitor System (TPMS) operates on a radio frequency and complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference. 2. This device must accept any interference received,


including interference that may cause undesired operation.


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The TPMS operates on a radio frequency and complies with RSS-210 of Industry and Science Canada. Operation is subject to the following two conditions: 1. This device may not cause interference. 2. This device must accept any interference received,


including interference that may cause undesired operation of the device.


Changes or modifications to this system by other than an authorized service facility could void authorization to use this equipment.


Tire Pressure Monitor Operation This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS is designed to warn the driver when a low tire pressure condition exists. TPMS sensors are mounted onto each tire and wheel assembly. The TPMS sensors monitor the air pressure in the vehicle’s tires and transmits the tire pressure readings to a receiver located in the vehicle.


When a low tire pressure condition is detected, the TPMS illuminates the low tire pressure warning light located on the instrument panel cluster.


At the same time a message to check the pressure in a specific tire appears on the Driver Information Center (DIC) display. The low tire pressure warning light and the DIC warning message come on at each ignition cycle until the tires are inflated to the correct inflation pressure. Using the DIC, tire pressure levels can be viewed by the driver. For additional information and details about the DIC operation and displays see DIC Operation and Displays on page 3-35 and DIC Warnings and Messages on page 3-37. The low tire pressure warning light may come on in cool weather when the vehicle is first started, and then turn off as you start to drive. This could be an early indicator that the air pressure in the tire(s) are getting low and need to be inflated to the proper pressure.


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A Tire and Loading Information label, attached to your vehicle, shows the size of your vehicle’s original equipment tires and the correct inflation pressure for your vehicle’s tires when they are cold. See Loading the Vehicle on page 4-20, for an example of the Tire and Loading Information label and its location on your vehicle. Also see Inflation - Tire Pressure on page 5-53. Your vehicle’s TPMS system can warn you about a low tire pressure condition but it does not replace normal tire maintenance. See Tire Inspection and Rotation on page 5-60 and Tires on page 5-47. Notice: Using non-approved tire sealants could damage the Tire Pressure Monitor System (TPMS) sensors. TPMS sensor damage caused by using an incorrect tire sealant is not covered by the vehicle warranty. Always use the GM approved tire sealant available through your dealer/retailer. Your vehicle, when new, included a factory-installed Tire Inflator Kit. This kit uses a GM approved liquid tire sealant. Using non-approved tire sealants could damage the TPMS sensors. See Tire Sealant and Compressor Kit (Without Selector Switch) on page 5-71 or Tire Sealant and Compressor Kit (With Selector Switch) on page 5-80 for information regarding the inflator kit materials and instructions.


TPMS Malfunction Light and Message The TPMS will not function properly if one or more of the TPMS sensors are missing or inoperable. When the system detects a malfunction, the low tire warning light flashes for about one minute and then stays on for the remainder of the ignition cycle. A DIC warning message is also displayed. The low tire warning light and DIC warning message come on at each ignition cycle until the problem is corrected. Some of the conditions that can cause the malfunction light and DIC message to come on are:


The TPMS sensor matching process was started but not completed or not completed successfully after rotating the vehicle’s tires. The DIC message and TPMS malfunction light should go off once the TPMS sensor matching process is performed successfully. See “TPMS Sensor Matching Process” later in this section.


(cid:129) One or more TPMS sensors are missing or damaged. The DIC message and the TPMS malfunction light should go off when the TPMS sensors are installed and the sensor matching process is performed successfully. See your dealer/retailer for service.


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(cid:129) (cid:129) Replacement tires or wheels do not match your


vehicle’s original equipment tires or wheels. Tires and wheels other than those recommended for your vehicle could prevent the TPMS from functioning properly. See Buying New Tires on page 5-63.


(cid:129) Operating electronic devices or being near facilities using radio wave frequencies similar to the TPMS could cause the TPMS sensors to malfunction.


If the TPMS is not functioning it cannot detect or signal a low tire condition. See your dealer/retailer for service if the TPMS malfunction light and DIC message comes on and stays on. TPMS Sensor Matching Process Each TPMS sensor has a unique identification code. Any time you replace one or more of the TPMS sensors or rotate the vehicle’s tires, the identification codes need to be matched to the new tire/wheel position. The sensors are matched, to the tire/wheel positions, in the following order: driver side front tire, passenger side front tire, passenger side rear tire, and driver side rear tire using a TPMS diagnostic tool. See your dealer/retailer for service. The TPMS sensors can also be matched to each tire/wheel position by increasing or decreasing the tire’s air pressure. When increasing the tire’s pressure, do not exceed the maximum inflation pressure indicated on


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the tire’s sidewall. To decrease the tire’s air-pressure use the pointed end of the valve cap, a pencil-style air pressure gage, or a key. You have two minutes to match each tire and wheel position. If it takes longer than two minutes to match any tire and wheel position, the matching process stops and you need to start over. TPMS Matching Process for Vehicles with Remote Keyless Entry (RKE) 1. Set the parking brake. 2. Turn the ignition switch to ON/RUN with the


engine off.


3. Press and hold the Remote Keyless Entry (RKE) transmitter’s LOCK and UNLOCK buttons, at the same time, for about five seconds to start the TPMS learn mode. The horn sounds twice indicating the TPMS receiver is ready and in learn mode.


4. Start with the driver side front tire. The driver side


front turn signal also comes on to indicate that corner’s sensor is ready to be learned.


5. Remove the valve cap from the tire’s valve stem.


Activate the TPMS sensor by increasing or decreasing the tire’s air pressure for about eight seconds. The horn chirp, can take up to 30 seconds to sound. It chirps one time and then all


the turn signals flash one time to confirm the sensor identification code has been matched to the tire/wheel position.


10. Set all four tires to the recommended air pressure


level as indicated on the Tire and Loading Information label.


6. The passenger side front turn signal comes on to indicate that corner sensor is ready to be learned. Proceed to the passenger side front tire and repeat the procedure in Step 5.


7. The passenger side rear turn signal comes on to indicate that corner sensor is ready to be learned. Proceed to the passenger side rear tire and repeat the procedure in Step 5.


8. The driver side rear turn signal comes on to


indicate that corner sensor is ready to be learned. Proceed to the driver side rear tire, and repeat the procedure in Step 5.


9. After hearing the single horn chirp for the driver


side rear tire, two additional horn chirps sound to indicate the tire learning process is done. Turn the ignition switch to LOCK/OFF. If no tires are learned after entering the TPMS learn mode, or if communication with the receiver stops, or if the time limit has expired, turn the ignition switch to LOCK/OFF and start over beginning with Step 2.


11. Put the valve caps back on the valve stems. TPMS Matching Process for Vehicles without Remote Keyless Entry (RKE) 1. Set the parking brake. 2. Turn the ignition switch to ON/RUN with the


engine off.


3. Using the Driver Information Center (DIC), press


the INFO and Set/Reset buttons at the same time for about one second. Then press and release the INFO button until the TIRE LEARN? message displays.


4. Press and hold the Set/Reset DIC button for


approximately three seconds to start the TPMS learn mode. The horn sounds twice to indicate the TPMS receiver is ready and the TIRE LEARN ON message displays. The driver side front turn signal also comes on to indicate that corner sensor is ready to be learned.


5. Start with the driver side front tire.


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6. Remove the valve cap from the tire’s valve stem.


Activate the TPMS sensor by increasing or decreasing the tire’s air pressure for about eight seconds. The horn chirp, can take up to 30 seconds to sound. It chirps one time and then all the turn signals flash one time to confirm the sensor identification code has been matched to the tire/wheel position.


7. The passenger side front turn signal comes on to indicate that corner sensor is ready to be learned. Proceed to the passenger side front tire and repeat the procedure in Step 6.


8. The passenger side rear turn signal comes on to indicate that corner sensor is ready to be learned. Proceed to the passenger side rear tire and repeat the procedure in Step 6.


9. The driver side rear turn signal comes on to


indicate that corner sensor is ready to be learned. Proceed to the driver side rear tire, and repeat the procedure in Step 6.


10. After hearing the single horn chirp for the driver


side rear tire, two additional horn chirps sound to indicate the tire learning process is done. The LEARN COMPLETE message displays if all four tire positions are learned. Turn the ignition switch to LOCK/OFF.


If no tires are learned after entering the TPMS learn mode, or if communication with the receiver stops, or if the time limit has expired, the TIRE LEARN? message displays on the DIC. Turn the ignition switch to LOCK/OFF and start over beginning with Step 2.


11. Set all four tires to the recommended air pressure


level as indicated on the Tire and Loading Information label.


12. Put the valve caps back on the valve stems.


Tire Inspection and Rotation We recommend that you regularly inspect your vehicle’s tires for signs of wear or damage. See When It Is Time for New Tires on page 5-62
for more information. Tires should be rotated every 5,000 to 8,000 miles (8 000 to 13 000 km). See Scheduled Maintenance on page 6-4. The purpose of a regular tire rotation is to achieve a uniform wear for all tires on the vehicle. This will ensure that your vehicle continues to perform

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