2013 Cadillac CTS Owners Manual

malfunction or damage not covered by the vehicle warranty. Damage to vehicle components resulting from modifications or the installation or use of non‐GM certified parts, including control module or software modifications, is not covered under the terms of the vehicle warranty and may affect remaining warranty coverage for affected parts.

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Vehicle Care

GM Accessories are designed to complement and function with other systems on the vehicle. See your dealer to accessorize the vehicle using genuine GM Accessories installed by a dealer technician. Also, see Adding Equipment to the Airbag-Equipped Vehicle on page 3‑32.

Vehicle Checks

Doing Your Own Service Work

{ WARNING

It can be dangerous to work on your vehicle if you do not have the proper knowledge, service manual, tools, or parts. Always follow owner manual procedures and consult the service manual for your vehicle before doing any service work.

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 13‑16. This vehicle has an airbag system. Before attempting to do your own service work, see Servicing the Airbag-Equipped Vehicle on page 3‑31. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Records on page 11‑17.

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Vehicle Care

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Before closing the hood, be sure all the filler caps are on properly. Then pull the hood down and close it firmly.

Notice: Even small amounts of contamination can cause damage to vehicle systems. Do not allow contaminants to contact the fluids, reservoir caps, or dipsticks.

Hood To open the hood:

1. Pull the hood release lever with this symbol on it. It is inside the vehicle on the lower side of the instrument panel.

2. Go to the front of the vehicle and find the secondary hood release lever. The lever is under the front edge of the grille near the center. Lift the release lever up and raise the hood.

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Vehicle Care

Engine Compartment Overview

CTS 3.6L V6 Engine Shown, 3.0L V6 Engine Similar

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1. Windshield Washer Fluid

5. Passenger Compartment Air

11. Brake Master Cylinder

Vehicle Care

10-7

Reservoir (Out of View). See Brakes on page 10‑25.

12. Engine Coolant Surge Tank

and Pressure Cap. See Engine Coolant on page 10‑18.

13. Engine Air Cleaner/Filter on

page 10‑15.

Reservoir. See Washer Fluid on page 10‑24.

2. Engine Compartment Fuse

Block (CTS-V Wagon) on page 10‑47 or Engine Compartment Fuse Block (CTS Coupe and Sedan) on page 10‑36 or Engine Compartment Fuse Block (CTS-V Coupe and Sedan) on page 10‑40 or Engine Compartment Fuse Block (CTS Wagon) on page 10‑44.

3. Remote Positive (+) Terminal.

See Jump Starting on page 10‑101.

4. Remote Negative (−) Terminal.

See Jump Starting on page 10‑101.

Filter on page 8‑6.

6. Engine Cooling Fan (Out of

View). See Cooling System on page 10‑17.

7. Power Steering Fluid Reservoir.

See Power Steering Fluid on page 10‑23.

8. Engine Oil Fill Cap. See Engine

Oil on page 10‑10.

9. Engine Oil Dipstick (Out of

View). See Engine Oil on page 10‑10.

10. Hydraulic Clutch Reservoir (If Equipped) (Not Shown). See Hydraulic Clutch on page 10‑14.

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Vehicle Care

CTS-V 6.2L V8 Engine

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1. Windshield Washer Fluid

7. Passenger Compartment Air

Reservoir. See Washer Fluid on page 10‑24.

2. Engine Compartment Fuse

Block (CTS-V Wagon) on page 10‑47 or Engine Compartment Fuse Block (CTS Coupe and Sedan) on page 10‑36 or Engine Compartment Fuse Block (CTS-V Coupe and Sedan) on page 10‑40 or Engine Compartment Fuse Block (CTS Wagon) on page 10‑44.

3. Remote Positive (+) Terminal.

See Jump Starting on page 10‑101.

4. Remote Negative (−) Terminal.

See Jump Starting on page 10‑101.

5. Engine Oil Fill Cap (Out of View). See Engine Oil on page 10‑10.

6. Engine Oil Dipstick. See Engine

Oil on page 10‑10.

8.

Filter on page 8‑6. Intercooler System Pressure Cap. See Cooling System on page 10‑17.

9. Engine Cooling Fans (Out of

View). See Cooling System on page 10‑17.

10. Hydraulic Clutch Reservoir (If

Equipped). See Hydraulic Clutch on page 10‑14. 11. Brake Master Cylinder

Reservoir. See Brakes on page 10‑25.

12. Engine Coolant Surge Tank

and Pressure Cap. See Engine Coolant on page 10‑18.

13. Power Steering Fluid Reservoir

(Under Engine Cover). See Power Steering Fluid on page 10‑23.

14. Engine Air Cleaner/Filter on

page 10‑15.

Vehicle Care

10-9

Engine Cover

Engine Cover (CTS)

1. Oil Fill Cap 2. Engine Cover 3. Rear Tabs To remove: 1. Remove the oil fill cap (1). 2. Raise the right front corner of

the engine cover (2) to release it from the ball stud.

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Vehicle Care

3. Pull the engine cover (2) forward to slide the rear tabs (3) out from under the retainers.

4. Lift and remove the engine

cover.

5. Reverse Steps 1–4 to reinstall

the engine cover.

Engine Cover (CTS-V)

1. Engine Cover 2. Ball Studs

To remove: The engine cover consists of two pieces. Only the larger front piece needs to be removed to access the engine oil and power steering fill caps. 1. Raise the front of the engine

cover (1) to release it from the ball studs (2).

2. Pull the engine cover forward

until it is clear of the smaller piece.

3. Lift and remove the engine

cover.

4. Reverse Steps 1–3 to reinstall

the engine cover.

Engine Oil To ensure proper engine performance and long life, careful attention must be paid to engine oil. Following these simple, but important steps will help protect your investment: . Always use engine oil approved to the proper specification and of the proper viscosity grade. See “Selecting the Right Engine Oil” in this section.

. Check the engine oil level regularly and maintain the proper oil level. See “Checking Engine Oil” and “When to Add Engine Oil” in this section.

. Change the engine oil at the

appropriate time. See Engine Oil Life System on page 10‑12. . Always dispose of engine oil

properly. See “What to Do with Used Oil” in this section.

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Checking Engine Oil It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the vehicle must be on level ground. The engine oil dipstick handle is a loop. See Engine Compartment Overview on page 10‑6 for the location of the engine oil dipstick. 1.

If the engine has been running recently, turn off the engine and allow several minutes for the oil to drain back into the oil pan. Checking the oil level too soon after engine shutoff will not provide an accurate oil level reading.

{ WARNING

The engine oil dipstick handle may be hot; it could burn you. Use a towel or glove to touch the dipstick handle.

2. Pull out 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.

When to Add Engine Oil If the oil is below the cross-hatched area at the tip of the dipstick, add 1 L (1 qt) of the recommended oil and then recheck the level. See “Selecting the Right Engine Oil” in this section for an explanation of what kind of oil to use. For engine oil crankcase capacity, see Capacities and Specifications on page 12‑2. Notice: Do not add too much oil. Oil levels above or below the acceptable operating range shown on the dipstick are harmful to the engine. If you find that you have an oil level above the operating range, i.e., the engine has so much oil that the oil level gets above the cross-hatched area that shows the proper operating range, the engine could

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be damaged. You should drain out the excess oil or limit driving of the vehicle and seek a service professional to remove the excess amount of oil. See Engine Compartment Overview on page 10‑6 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 through. Selecting the Right Engine Oil Selecting the right engine oil depends on both the proper oil specification and viscosity grade. See Recommended Fluids and Lubricants on page 11‑13.

Specification Use and ask for licensed engine oils with the dexos1® approved certification mark. Engine oils meeting the requirements for the vehicle should have the dexos1
approved certification mark.

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Vehicle Care

This certification mark indicates that the oil has been approved to the dexos1 specification.

Notice: Failure to use the recommended engine oil or equivalent can result in engine damage not covered by the vehicle warranty. Check with your dealer or service provider on whether the oil is approved to the dexos1 specification.

Viscosity Grade SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. Cold Temperature Operation: In an area of extreme cold, where the temperature falls below −29°C (−20°F), an SAE 0W-30 oil may be

used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. When selecting an oil of the appropriate viscosity grade, always select an oil of the correct specification. See “Specification” earlier in this section for more information. Engine Oil Additives/Engine Oil Flushes Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark 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. 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 or 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.

Engine Oil Life System

When to Change Engine Oil This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is

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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 ENGINE OIL SOON message comes on. See Engine Oil Messages on page 5‑35. Change the oil as soon as possible within the next 1 000 km (600 mi). It is possible that, if driving under the best conditions, the oil life system might indicate that an oil change is not necessary for up to a year. The engine oil and filter must be changed at least once a year and at this time the system must be reset. Your dealer has trained service people who will perform this work and reset the system. It is also important to check the oil regularly over the course of an oil drain interval and keep it at the proper level.

If the system is ever reset accidentally, the oil must be changed at 5 000 km (3,000 mi) since the last oil change. Remember to reset the oil life system whenever the oil is changed. How to Reset the Engine Oil Life System Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. To reset the system: 1. Using the DIC MENU button, display OIL LIFE REMAINING on the DIC. See Driver Information Center (DIC) on page 5‑27 and Engine Oil Messages on page 5‑35.

2. Press the Set/Reset button and hold for two seconds to clear the CHANGE ENGINE OIL SOON message and reset the oil life at 100%.

Vehicle Care

10-13

Be careful not to reset the oil life display accidentally at any time other than after the oil is changed. It cannot be reset accurately until the next oil change.

The oil life system can also be reset as follows: 1. Turn the ignition on with the

engine off.

2. Fully press and release the

accelerator pedal three times within five seconds. If the CHANGE ENGINE OIL SOON message is not on, the system is reset.

The system is reset when the CHANGE ENGINE OIL SOON message is off. If the CHANGE ENGINE OIL SOON message comes back on when the vehicle is started, the engine oil life system has not been reset. Repeat the procedure.

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Vehicle Care

Automatic Transmission Fluid

How to Check 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 the vehicle to the dealer and have it repaired as soon as possible. The vehicle is not equipped with a transmission fluid level dipstick. There is a special procedure for checking and changing the transmission fluid. Because this procedure is difficult, it should be done at the dealer. Contact your dealer for additional information or refer to the procedure in the service manual. To purchase a service manual, see Service Publications Ordering Information on page 13‑16. Change the fluid and filter at the intervals listed in Maintenance Schedule on page 11‑3, and be sure

to use the fluid listed in Recommended Fluids and Lubricants on page 11‑13.

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 for service. Have it repaired as soon as possible. You may also have the fluid level checked by your dealer when the oil is changed. See Recommended Fluids and Lubricants on page 11‑13 for the proper fluid to use.

Hydraulic Clutch It is not necessary to regularly check clutch fluid unless you suspect there is a leak in the system. Adding fluid will not correct a leak. A fluid loss in this system could indicate a problem. Have the system inspected and repaired.

When to Check and What to Use

The hydraulic clutch fluid reservoir cap has this symbol on it. See Engine Compartment Overview on page 10‑6 for reservoir location. Refer to the Maintenance Schedule for the proper fluid to use. See Recommended Fluids and Lubricants on page 11‑13. The fluid requires changing every two years. See Maintenance Schedule on page 11‑3. How to Check and Add Fluid Visually check the clutch fluid reservoir to make sure the fluid level is at the MIN (minimum) line on the

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Vehicle Care

10-15

side of the reservoir. The hydraulic clutch fluid system should be closed and sealed. Do not remove the cap to check the fluid level or to top‐off the fluid level. Remove the cap only when necessary to add the proper fluid until the level reaches the MIN line.

Engine Air Cleaner/Filter The engine air cleaner/filter is in the engine compartment on the driver side of the vehicle, near the front. See Engine Compartment Overview on page 10‑6. When to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter at the scheduled maintenance intervals and replace it at the first oil change after each 80 000 km (50,000 mile) interval. See Maintenance Schedule on page 11‑3. If you are driving in dusty/dirty conditions, inspect the filter at each engine oil change.

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 covered with dirt, a new filter is required. To inspect or replace the engine air cleaner/filter: 1. Turn the ignition off.

2. Remove the side cover by

pulling up on the front of the cover.

3. Disconnect the electrical

connector from the air box.

4. Loosen the screw on the clamp

holding the air outlet duct in place. Do not remove the clamp. Move the duct aside.

5. Remove the hose from the air cleaner housing mounting arm. Move the hose aside.

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Vehicle Care

7. Move the air cleaner housing cover and remove the cover from the air cleaner housing.

4.

3.

2. Align the air cleaner housing cover tabs to the air cleaner housing. Install the air cleaner housing cover. Install the air cleaner housing cover screws. Install the hose to the air cleaner housing mounting arm. The hose must be routed correctly. Install the air cleaner outlet duct to the air cleaner housing.

5.

6.

8. Remove the air cleaner filter from the air cleaner housing. How to Reinstall Engine Air Cleaner/Filter 1.

Install the air cleaner into the air cleaner housing. The outer air cleaner filter seal must be fitted properly in the air cleaner housing.

7. Tighten the air cleaner outlet

duct screw clamp.

8. Attach the electrical connector to

the air box.

9. Reinstall the side cover. { WARNING

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

(Continued)

6. Remove the three air cleaner

housing cover screws.

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WARNING (CONTINUED)

helps to stop flames if the engine backfires. Use caution when working on the engine and do not drive with the air cleaner/filter off.

Notice: If the air cleaner/filter is off, dirt can easily get into the engine, which could damage it. Always have the air cleaner/filter in place when you are driving.

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

3.6L V6 Shown, 3.0L V6 Engine

and 6.2L V8 Engine Similar

1. Engine Cooling Fan(s) (Out

of View)

2. Coolant Surge Tank and

Pressure Cap

{ WARNING

An electric engine cooling fan under the hood can start up even when the engine is not running

(Continued)

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10-17

WARNING (CONTINUED)

and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.

{ WARNING

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.

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Vehicle Care

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 50 000 km (30,000 mi) 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.

Engine Coolant The cooling system in the vehicle for all engines and the intercooler is filled with DEX-COOL®. This coolant is designed to remain in the vehicle for 5 years or 240 000 km (150,000 mi), 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 10‑22.

What to Use

{ WARNING

Adding only plain water or some other liquid to the cooling system can be dangerous. Plain water and other liquids, can boil before the proper coolant mixture will. The 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: . Gives freezing protection down

to −37°C (−34°F), outside temperature.

. Gives boiling protection up to

129°C (265°F), engine temperature.

. Protects against rust and

corrosion.

. Will not damage aluminum parts. . Helps keep the proper engine

temperature.

Notice: If improper coolant mixture, inhibitors, or additives are used in the vehicle cooling system, the engine could overheat and be damaged. Too much water in the mixture can freeze and crack engine cooling parts. The repairs would not be covered by the warranty. Use only the proper mixture of engine

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coolant for the cooling system. See Recommended Fluids and Lubricants on page 11‑13. Never dispose of engine coolant by putting it in the trash, pouring it on the ground, or into sewers, streams, or bodies of water. Have the coolant changed by an authorized service center, familiar with legal requirements regarding used coolant disposal. This will help protect the environment and your health. Checking Coolant The vehicle must be on a level surface when checking the coolant level. The engine coolant reservoir is in the engine compartment on the driver side of the vehicle. See Engine Compartment Overview on page 10‑6. Check to see if coolant is visible in the surge tank. If the coolant inside the 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, drinkable water and DEX-COOL coolant at the coolant surge tank, but be sure the cooling system is cool before this is done. If the engine is warm or hot, the coolant level should be at or above the FROID/FULL COLD line on the side of the coolant surge tank. If the engine is cold, the coolant level should be near the FROID/FULL COLD line on the side of the coolant surge tank. If it is not, there could be a leak in the cooling system. How to Add Coolant to the Surge Tank

{ WARNING

You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol

(Continued)

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10-19

WARNING (CONTINUED)

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.

{ WARNING

Steam and scalding liquids from a hot cooling system can blow out and burn you badly. 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.

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Vehicle Care

If coolant is needed, add the proper DEX-COOL coolant mixture at the coolant surge tank. If no coolant is visible in the surge tank, add coolant as follows: 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 one-quarter turn and then stop. If you hear a hiss, wait for that to stop. A hiss means there is still some pressure left.

2. Keep turning the pressure cap

slowly and remove it.

3. Fill the coolant surge tank with

the proper mixture, to slightly above the FROID/FULL COLD line on the side of the coolant surge tank.

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. The upper radiator hose is the top hose coming out of the radiator, on the passenger side of the vehicle. Watch out for the engine cooling fans. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower, add more of the proper mixture to the coolant surge tank until the level reaches the FROID/FULL COLD line on the side of the coolant surge tank. 5. Replace the pressure cap. Be

sure the pressure cap is hand-tight and fully seated.

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Notice: If the pressure cap is not tightly installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured. Recheck the coolant level in the bottle next time you use your vehicle to ensure the system is full when cold. Checking Coolant in the Intercooler System (CTS-V) The vehicle must be on a level surface when checking the coolant level. The super charged engine intercooler coolant fill neck is in the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview on page 10‑6. On the coolant fill neck, there is a cold fill region between the two horizontal lines shown. Check to see if coolant is visible in the coolant fill neck. If the coolant is not visible or below the cold fill

region in the fill neck, add a 50/ 50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant fill bottle, but be sure the cooling system is cool before this is done. Adding Coolant to the Intercooler System Coolant (CTS-V)

1. Remove the intercooler system

pressure cap when the intercooler system hoses are no longer hot. Turn the pressure cap slowly counterclockwise

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10-21

about one-quarter of a turn. If you hear a hiss, wait for that to stop. This allows any pressure still left to be vented.

2. Keep turning the pressure cap

slowly and remove it.

3. Add the proper DEX-COOL

coolant mixture to the fill neck until the coolant is within the cold fill region. With the intercooler system pressure cap off, start the engine and let it run for a couple of minutes. Then turn the engine off. By this time, the coolant level inside the fill neck may be lower. If the level drops where coolant is no longer within the cold fill region of the fill neck with the engine off, add more of the DEX-COOL coolant mixture to the fill neck until the level is again visible in the cold fill region.

4. Replace the pressure cap tightly.

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Vehicle Care

Notice: If the pressure cap is not tightly installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured. If the coolant is not at the proper level when the system cools down again, see your dealer.

Engine Overheating The vehicle has several indicators to warn of engine overheating. There are two engine hot messages that may be displayed in the Driver Information Center (DIC). See Engine Cooling System Messages on page 5‑34 for more information. You may decide not to lift the hood when one of these warnings appear, but get service help right away. See Roadside Service (U.S. and Canada) on page 13‑7 or Roadside Service (Mexico) on page 13‑9. 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 fans are running. If the engine is overheating, the fan(s) should be running. If they are not, do not continue to run the engine and have the vehicle serviced. Notice: Running the engine without coolant may cause damage or a fire. Vehicle damage would not be covered by the warranty. See Overheated Engine Protection Operating Mode on page 10‑23 for information on driving to a safe place in an emergency. If Steam Is Coming from the Engine Compartment { WARNING

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

(Continued)

WARNING (CONTINUED)

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 the engine is overheated, the liquids in it can catch fire. You or others could be badly burned. Stop the engine if it overheats, and get out of the vehicle until the engine is cool.

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: . Climbs a long hill on a hot day. . Stops after high-speed driving.

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Idles for long periods in traffic. Tows a trailer.

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

3.

temperature and to the highest fan speed. Open the windows as necessary. 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 gauge 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. Also, see “Overheated Engine Protection Operating Mode” next in this section.

Overheated Engine Protection Operating Mode This operating mode allows the vehicle to be driven to a safe place in an emergency. Should a hot engine condition exist, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage. In this mode, there is a loss in power and engine performance. Driving extended distances and/or towing a trailer in the overheat protection mode should be avoided.

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Power Steering Fluid

See Engine Compartment Overview on page 10‑6 for the location of the power steering fluid reservoir. When to Check Power Steering Fluid It is not necessary to regularly check power steering fluid unless you suspect there is a leak in the system or you hear an unusual noise. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. How to Check Power Steering Fluid To check the power steering fluid: 1. Turn the key off and let the

engine compartment cool down.

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Vehicle Care

2. Wipe the cap and the top of the

reservoir clean.

3. Unscrew the cap and wipe the

dipstick with a clean rag.

4. Replace the cap and completely

tighten it.

5. Remove the cap again and look at the fluid level on the dipstick.

The level should be between the HOT and COLD marks. If necessary, add only enough fluid to bring the level between the marks. What to Use To determine what kind of fluid to use, see Recommended Fluids and Lubricants on page 11‑13. Always use the proper fluid.

Washer Fluid

What to Use When adding windshield washer fluid to the vehicle, 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. Adding Washer Fluid The WASHER FLUID LOW ADD FLUID message will appear on the Driver Information Center (DIC) when the fluid level is low. See Washer Fluid Messages on page 5‑45.

Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 10‑6 for reservoir location.

Notice

. When using concentrated

washer fluid, follow the manufacturer instructions for adding water.

. Do not mix water with

ready-to-use washer fluid. Water can cause the solution to freeze and damage the washer fluid tank and other parts of the washer system.

. 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.

. Do not use engine coolant

(antifreeze) in the windshield washer. It can damage the windshield washer system and paint.

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Vehicle Care

10-25

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, be sure to get new, approved replacement parts. If this is not done, the brakes might not work properly. For example, installing disc brake pads that are wrong for the vehicle, can change the balance between the front and rear brakes — for the worse. The braking performance expected can change in many other ways if the wrong replacement brake parts are installed.

Brakes 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.

{ WARNING

The brake wear warning sound means that soon the brakes will not work well. That could lead to a crash. 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 12‑2. Brake linings should always be replaced as complete axle sets. Brake Pedal Travel See your dealer 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.

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10-26

Vehicle Care

Brake Fluid

The brake master cylinder reservoir is filled with DOT 3 brake fluid as indicated on the reservoir cap. See Engine Compartment Overview on page 10‑6 for the location of the reservoir. 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.

. A fluid leak in the brake

hydraulic system can also cause a low fluid level. Have the brake

hydraulic system fixed, since a leak means that sooner or later the brakes will not work well.

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

{ WARNING

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 hydraulic system.

When the brake fluid falls to a low level, the brake warning light comes on. See Brake System Warning Light on page 5‑21.

What to Add Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 11‑13. Always clean the brake fluid reservoir cap and the area around the cap before removing it. This helps keep dirt from entering the reservoir.

{ WARNING

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

Notice

. Using the wrong fluid can

badly damage brake hydraulic system parts. For example, just a few drops of mineral-based oil, such as engine oil, in the brake

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hydraulic system can damage brake 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.

Battery The battery is in the trunk, behind the trim panel, on the passenger side of the vehicle. Refer to the replacement number shown on the original battery label when a new battery is needed.

{ 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.

After a power loss, such as disconnecting the battery or removing the maxi fuses in the power distribution fuse block, the following steps must be performed to calibrate the electronic throttle control. If this is not done, the engine will not run properly. 1. Turn the ignition on but do not

start the engine.

2. Leave the ignition on for at least

three minutes so that the electronic throttle control will cycle and relearn its home position.

3. Turn the ignition off.

Vehicle Care

10-27

4. Start and run the engine for at

least 30 seconds.

Vehicle Storage

{ WARNING

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 10‑101 for tips on working around a battery without getting hurt.

Infrequent Usage: Remove the black, negative (−) cable from the battery to keep the battery from running down. Extended Storage: Remove the black, negative (−) cable from the battery or use a battery trickle charger.

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10-28

Vehicle Care

All-Wheel Drive If your vehicle is equipped with all-wheel-drive, this is an additional system that needs lubrication. Transfer Case

When to Check Lubricant It is not necessary to regularly check the transfer case 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.

What to Use Refer to the Maintenance Schedule on page 11‑3 to determine what kind of lubricant to use. See Recommended Fluids and Lubricants on page 11‑13.

Starter Switch Check

{ WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be

sure there is enough room around the vehicle.

How to Check Lubricant

1. Drain Plug 2. Fill Plug 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 transfer case, you'll need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole. Use care not to overtighten the plug.

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2. Firmly apply both the parking brake and the regular brake. See Parking Brake (Electric) on page 9‑33 or Parking Brake (Manual) on page 9‑33. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts.

3. For automatic transmission

vehicles, try to start the engine in each gear. The vehicle should start only in P (Park) or N (Neutral). If the vehicle starts in any other position, contact your dealer for service. For manual transmission vehicles, put the shift lever in Neutral, push the clutch pedal down halfway, and try to start the engine. The vehicle should start only when the clutch pedal is pushed down all the way to the floor. If the vehicle starts when the clutch pedal is not pushed all the way down, contact your dealer for service.

Automatic Transmission Shift Lock Control Function Check

{ WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be

sure there is enough room around the vehicle. It should be parked on a level surface.

2. Firmly apply the parking brake. See Parking Brake (Electric) on page 9‑33 or Parking Brake (Manual) on page 9‑33. Be ready to apply the regular brake immediately if the vehicle begins to move.

3. With the engine off, turn the

ignition on, but do not start the engine. Without applying the

Vehicle Care

10-29

regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer for service.

Ignition Transmission Lock Check While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position.

The ignition should turn to LOCK/OFF only when the shift lever is in P (Park).

. With the key access ignition

system, the ignition key should come out only in LOCK/OFF. See Ignition Positions (Keyless Access) on page 9‑15 or Ignition Positions (Key Access) on page 9‑17.

Contact your dealer if service is required.

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10-30

Vehicle Care

Park Brake and P (Park) Mechanism Check { WARNING

When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move.

Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake.

To check the parking brake's holding ability: With the engine running and the transmission in N (Neutral), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only.

To check the P (Park) mechanism's holding ability: With the engine running, shift to P (Park). Then release the parking brake followed by the regular brake.

Contact your dealer if service is required.

Wiper Blade Replacement Windshield wiper blades should be inspected for wear or cracking. See Maintenance Schedule on page 11‑3. It is a good idea to clean or replace the wiper blade assembly on a regular basis or when worn. For proper windshield wiper blade length and type, see Maintenance Replacement Parts on page 11‑15. To replace the wiper blade assembly: 1. Turn the ignition to ON/RUN with

the engine off.

2. Turn on the windshield wipers and turn them off again when the wipers are in the out-wipe position. The driver side blade will be straight up and down on the windshield.

3. Pull the windshield wiper assembly away from the windshield.

4. Lift up the wiper blade

assembly cap.

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5. Pull the wiper blade assembly down far enough to release it from the J-hooked end of the wiper arm. Slide the assembly away from the arm. Allowing the wiper blade arm to touch the windshield when no wiper blade is installed could damage the windshield. Any damage that occurs would not be covered by your warranty. Do not allow the wiper blade arm to touch the windshield.

6. Replace the blade with a

new one.

Vehicle Care

10-31

To remove the cover:

7. Reinstall the wiper blade

assembly by sliding it over the wiper arm to engage the J-hooked end. Pull up on the assembly to lock it into place. 8. Repeat the steps for the other

wiper.

Rear Wiper Blade Replacement (Wagon) The rear wiper blade and wiper arm have a cover for protection. The cover must be removed before the wiper blade can be replaced.

1. Slide a plastic tool under the

cover and push upward to unsnap.

2. Slide the cover toward the wiper

blade tip to unhook it from the blade assembly.

3. Remove the cover. 4. After wiper blade replacement,

ensure that the cover hook slides into the slot in the blade assembly.

5. Snap the cover down to secure. To remove the wiper blade: 1. Lift the wiper arm away from the

windshield.

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10-32

Vehicle Care

2. Push the release lever (2) to

disengage the hook and push the wiper arm (1) out of the blade assembly (3).

3. Push the new blade assembly securely on the wiper arm until the release lever clicks into place.

4. Replace the wiper cover.

Headlamp Aiming Headlamp aim has been preset and should need no further adjustment. If the vehicle is damaged in a crash, the headlamp aim may be affected. If adjustment to the headlamps is necessary, see your dealer.

Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑35. For any bulb‐changing procedure not listed in this section, contact your dealer.

Halogen Bulbs

{ WARNING

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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High Intensity Discharge (HID) Lighting

Fog Lamps

{ WARNING

The low beam high intensity discharge lighting system operates at a very high voltage. If you try to service any of the system components, you could be seriously injured. Have your dealer or a qualified technician service them.

After an HID headlamp bulb has been replaced, the beam might be a slightly different shade than it was originally. This is normal.

LED Lighting This vehicle has several LED lamps. For replacement of any LED lighting assembly, contact your dealer.

To replace a front fog lamp bulb: 1. Pull out the push-pins on the

underside of the protection shield to remove the shield.

2. Reach up behind the front

bumper area from under the vehicle to access the lamp housing.

3. Remove the electrical connector

from the bulb by lifting the two plastic clips.

4. Remove the bulb socket from

the lamp housing by turning the bulb socket one-quarter turn counterclockwise.

Vehicle Care

10-33

5. Pull the old bulb from the lamp

housing keeping the bulb straight as you pull it out. Install a new bulb.

6. 7. Reinstall the electrical connector

by pushing in the two plastic clips.

8. Push the bulb socket into the

lamp housing and turn the socket one-quarter turn clockwise.

License Plate Lamp (Coupe and Sedan) To replace one of these bulbs:

1. Push the tab to remove the

license plate lamp.

2. Turn the license plate lamp

assembly down to remove it.

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10-34

Vehicle Care

3. Turn the socket

counterclockwise and remove it.

4. Pull the bulb straight out to

remove it.

5. Push the new bulb straight into

the socket.

6. Reverse Steps 1 through 3 to

reinstall the license plate lamp assembly.

License Plate Lamp (Wagon) To replace one of these bulbs: 1. Open the liftgate. See Liftgate

on page 2‑18.

Passenger Side Shown, Driver

Side Similar

2. Push the left end of the lamp

assembly toward the right.

3. Turn the lamp assembly down to

remove it from the liftgate.

4. Turn the bulb socket (1)

counterclockwise to remove it from the lamp assembly (3).

5. Pull the bulb (2) straight out of

the bulb socket.

6. Push the replacement bulb

straight into the bulb socket and turn the bulb socket clockwise to install it into the lamp assembly. 7. Turn the lamp assembly into the

liftgate engaging the clip side first.

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8. Push on the lamp side opposite the clip until the lamp assembly snaps into place.

Replacement Bulbs

Exterior Lamp

Fog Lamp (Uplevel Only) License Plate Lamp

Bulb

Number

H11LL

W5WLL

For replacement bulbs not listed here, contact your dealer.

Vehicle Care

10-35

Headlamp Wiring An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off. Windshield Wipers If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart. Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage. Always clear ice and heavy snow from the windshield before using the windshield wipers. If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.

Electrical System

Electrical System Overload The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems. Fuses and circuit breakers protect power devices in the vehicle. Replace a bad fuse with a new one of the identical size and rating. If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible.

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10-36

Vehicle Care

Fuses and Circuit Breakers The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems. To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating. Fuses of the same amperage can be temporarily borrowed from another fuse location, if a fuse goes out. Replace the fuse as soon as you can.

To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse Block (CTS-V Wagon) on page 10‑47 or Engine Compartment Fuse Block (CTS Coupe and Sedan) on page 10‑36
or Engine Compartment Fuse Block (CTS-V Coupe and Sedan) on page 10‑40 or Engine Compartment Fuse Block (CTS Wagon) on page 10‑44 and Rear Compartment Fuse Block (CTS Wagon) on page 10‑54 or Rear Compartment Fuse Block (CTS-V Wagon) on page 10‑56 or Rear Compartment Fuse Block (CTS Coupe and Sedan) on page 10‑50 or Rear Compartment Fuse Block (CTS-V Coupe and Sedan) on page 10‑52.

Engine Compartment Fuse Block (CTS Coupe and Sedan) The underhood fuse block is on the left side of the engine compartment.

Lift the fuse block cover to access the fuses. The vehicle may not be equipped with all of the fuses and relays shown. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

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Vehicle Care

10-37

Mini-Fuses

27

28
29

30

31

33

34

35

36

38

Usage Body Control Module 4
Navigation Motor All-Wheel Drive Transmission Control Module Battery Horn Left Low-Beam Headlamp (Domestic Non-HID Only) Pedestrian Protection System (Export Only) Body Control Module 3
Body Control Module 2
Headlamp Washer (HID Only)

Mini-Fuses

Usage

Mini-Fuses

11

19

22
23

Not Used Antilock Braking System (ABS) Display Not Used

24

25

26

Usage Body Control Module 1
Automatic Forward Lighting System (HID Only) Body Control