2016 Buick Lacrosse Owners Manual

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V6 Engine with AWD) . . . . . . . 247 Washer Fluid . . . . . . . . . . . . . . . . . 248 Brakes . . . . . . . . . . . . . . . . . . . . . . . 248 Brake Fluid . . . . . . . . . . . . . . . . . . . 249 Battery - North America . . . . . . 250 All-Wheel Drive . . . . . . . . . . . . . . . 251 Starter Switch Check . . . . . . . . . 251 Automatic Transmission Shift Lock Control Function Check . . . . . . . . . . . . . . . . . . . . . . . 252 Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 252 Park Brake and P (Park) Mechanism Check . . . . . . . . . . 252 Wiper Blade Replacement . . . . 253 Windshield Replacement . . . . . 253 Headlamp Aiming Headlamp Aiming . . . . . . . . . . . . 254 Bulb Replacement Bulb Replacement . . . . . . . . . . . . 254 Halogen Bulbs . . . . . . . . . . . . . . . . 254 High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 254 LED Lighting . . . . . . . . . . . . . . . . . 254 Headlamps, Front Turn Signal and Parking Lamps . . . . . . . . . 255 Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . 256 License Plate Lamp . . . . . . . . . . 256 Replacement Bulbs . . . . . . . . . . . 257 Electrical System High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . 257 Electrical System Overload . . . 257 Fuses and Circuit Breakers . . . 258 Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 258 Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 262 Wheels and Tires Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 264 All-Season Tires . . . . . . . . . . . . . . 265 Winter Tires . . . . . . . . . . . . . . . . . . 265 Summer Tires . . . . . . . . . . . . . . . . 266 Tire Sidewall Labeling . . . . . . . . 266 Tire Designations . . . . . . . . . . . . . 269 Tire Terminology and Definitions . . . . . . . . . . . . . . . . . . 269 Tire Pressure . . . . . . . . . . . . . . . . . 272 Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 273 Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 274 Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 275 Tire Inspection . . . . . . . . . . . . . . . . 278 Tire Rotation . . . . . . . . . . . . . . . . . 278 When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 279 Buying New Tires . . . . . . . . . . . . . 280 Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 281 Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 281 Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 283 Wheel Replacement . . . . . . . . . . 283 Tire Chains . . . . . . . . . . . . . . . . . . . 284 If a Tire Goes Flat . . . . . . . . . . . . 284 Tire Sealant and Compressor Kit . . . . . . . . . . . . . 286 Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . 291 Tire Changing . . . . . . . . . . . . . . . . 292 Compact Spare Tire . . . . . . . . . . 296 Jump Starting Jump Starting - North America (On-board with eAssist Only) . . . . . . . . . . . . . . . . 298 Jump Starting - North America (with or without eAssist) . . . . . 299 Vehicle Care 227 Towing the Vehicle Towing the Vehicle . . . . . . . . . . . 302 Recreational Vehicle Towing . . . . . . . . . . . . . . . . . . . . . . 302 Appearance Care Exterior Care . . . . . . . . . . . . . . . . . 305 Interior Care . . . . . . . . . . . . . . . . . . 309 Floor Mats . . . . . . . . . . . . . . . . . . . . 312 General Information For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks: California Proposition 65 Warning 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 dealer to accessorize the vehicle using genuine GM Accessories installed by a dealer technician. Also, see Adding Equipment to the Airbag-Equipped Vehicle 0 76. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 228 Vehicle Care harm. Engine exhaust, many parts and systems, many fluids, and some component wear by-products contain and/or emit these chemicals. See Battery - North America 0 250 and Jump Starting - North America (On-board with eAssist Only) 0 298 or Jump Starting - North America (with or without eAssist) 0 299. California Perchlorate Materials Requirements Certain types of automotive applications, such as airbag initiators, safety belt pretensioners, and lithium batteries contained in Remote Keyless Entry transmitters, may contain perchlorate materials. Special handling may be necessary. For additional information, see www.dtsc.ca.gov/hazardouswaste/ perchlorate. Accessories and Modifications Adding non-dealer accessories or making modifications to the vehicle can affect vehicle performance and safety, including such things as airbags, braking, stability, ride and handling, emissions systems, aerodynamics, durability, and electronic systems like antilock brakes, traction control, and stability control. These accessories or modifications could even cause 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. GM Accessories are designed to complement and function with other systems on the vehicle. See your Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- Vehicle Checks All Vehicles Doing Your Own Service Work eAssist Vehicles Only { Warning Never try to do your own service on eAssist components. You can be injured and the vehicle can be damaged if you try to do your own service work. Service and repair of these eAssist components should only be performed by a trained service technician with the proper knowledge and tools. { 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 0 339. Vehicle Care 229 This vehicle has an airbag system. Before attempting to do your own service work, see Airbag System Check 0 76. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Records 0 326. Caution Even small amounts of contamination can cause damage to vehicle systems. Do not allow contaminants to contact the fluids, reservoir caps, or dipsticks. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 230 Vehicle Care Hood To open the hood: 2. Go to the front of the vehicle and push the secondary hood release handle toward the driver side of the vehicle. 3. Lift the hood. 1. Pull the interior hood release handle located to the left of the steering column below the instrument panel. To close the hood: 1. Before closing the hood, be sure all the filler caps are on properly. 2. Lower the hood 30 cm (12 in) above the vehicle and release it so it fully latches. Check to make sure the hood is closed and repeat the process if necessary. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- Engine Compartment Overview Vehicle Care 231 2.4L L4 Engine Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 12. Windshield Washer Fluid Reservoir. See Washer Fluid 0 248. 232 Vehicle Care 1. Engine Air Cleaner/Filter 0 240. 2. Engine Cover. 3. Engine Cooling Fans (Out of View). See Cooling System 0 242. 4. Engine Oil Fill Cap. See Engine Oil 0 236. 5. Engine Oil Dipstick (Out of View). See Engine Oil 0 236. 6. High Voltage Cable (Orange Color). 7. Transmission Fluid Cap. See Automatic Transmission Fluid 0 239. 8. Brake Master Cylinder Reservoir. See Brake Fluid 0 249. 9. Battery (Under Cover). See Battery - North America 0 250. 10. Coolant Surge Tank and Pressure Cap. See Engine Coolant 0 243. 11. Engine Compartment Fuse Block 0 258. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- Vehicle Care 233 3.6L V6 Engine AWD Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 11. Windshield Washer Fluid Reservoir. See Washer Fluid 0 248. 234 Vehicle Care 1. Engine Air Cleaner/Filter 0 240. 2. Power Steering Reservoir and Cap. See Power Steering Fluid (2.4L L4 Engine and 3.6L V6 Engine with FWD) 0 247 or Power Steering Fluid (3.6L V6 Engine with AWD) 0 247. 3. Engine Oil Fill Cap. See Engine Oil 0 236. 4. Engine Oil Dipstick. See Engine Oil 0 236. 5. Engine Cover. 6. Transmission Fluid Cap and Dipstick. See Automatic Transmission Fluid 0 239. 7. Brake Master Cylinder Reservoir. See Brake Fluid 0 249. 8. Coolant Surge Tank and Pressure Cap. See Engine Coolant 0 243. 9. Battery Cover. See Battery - North America 0 250. 10. Engine Compartment Fuse Block 0 258. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- Vehicle Care 235 3.6L V6 Engine FWD Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 236 Vehicle Care 1. Engine Air Cleaner/Filter 0 240. 2. Engine Oil Fill Cap. See Engine Oil 0 236. 3. Engine Oil Dipstick. See Engine Oil 0 236. 4. Engine Cover. 5. Transmission Fluid Cap and Dipstick. See Automatic Transmission Fluid 0 239. 6. Brake Master Cylinder Reservoir. See Brake Fluid 0 249. 7. Coolant Surge Tank and Pressure Cap. See Engine Coolant 0 243. 8. Battery Cover. See Battery - North America 0 250. 9. Engine Compartment Fuse Block 0 258. 10. Windshield Washer Fluid Reservoir. See Washer Fluid 0 248. 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 0 238. . Always dispose of engine oil properly. See “What to Do with Used Oil” in this section. 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 0 231 for the location of the engine oil dipstick. Obtaining an accurate oil level reading is essential: 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 wipe it with a clean paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down, and check the level. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- When to Add Engine Oil 2.4L L4 Engine 3.6L V6 Engine 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 0 328. Caution 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 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 0 231 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. Vehicle Care 237 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 0 324. Specification Ask for and use engine oils that meet the dexos1™ specification. Engine oils that have been approved by GM as meeting the dexos1 specification are marked with the dexos1 approved logo. See www.gmdexos.com. Caution Failure to use the recommended engine oil can result in engine damage not covered by the (Continued) Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 238 Vehicle Care Caution (Continued) vehicle warranty. Check with your dealer or service provider on whether the oil is approved to the dexos1 specification. Viscosity Grade Use SAE 5W-30 viscosity grade engine oil. 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 meeting the dexos1 specification 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 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 0 133. 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 Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 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 controls on the right side of the steering wheel, display REMAINING OIL LIFE on the DIC. See Driver Information Center (DIC) 0 123. When remaining oil life is low, the CHANGE ENGINE OIL SOON message will appear on the display. See Engine Oil Messages 0 133. 2. Press V on the DIC controls and hold down for a few seconds to clear the CHANGE ENGINE OIL SOON message and reset the oil life at 100%. 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 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. Vehicle Care 239 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 your dealer service department and have it repaired as soon as possible. There is a special procedure for checking and changing the transmission fluid. Because this procedure is difficult, you should have this done at your dealer service department. Contact your dealer for additional information or the procedure can be found in the service manual. To purchase a service manual, see Service Publications Ordering Information 0 339. Change the fluid at the intervals listed in Maintenance Schedule 0 315, and be sure to use the fluid listed in Recommended Fluids and Lubricants 0 324. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 240 Vehicle Care Engine Air Cleaner/Filter The engine air cleaner/filter is in the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview 0 231. When to Inspect the Engine Air Cleaner/Filter For intervals on changing and inspecting the engine air cleaner/ filter, see Maintenance Schedule 0 315. How to Inspect the Engine Air Cleaner/Filter Do not start the engine or have the engine running with the engine air cleaner/filter housing open. Before removing the engine air cleaner/ filter, make sure that the engine air cleaner/filter housing and nearby components are free of dirt and debris. Remove the engine air cleaner/filter. Lightly tap and shake the engine air cleaner/filter (away from the vehicle), to release loose dust and dirt. Inspect the engine air cleaner/filter for damage, and replace if damaged. Do not clean the engine air cleaner/filter or components with water or compressed air. 3. Disconnect the electrical connector (3). 4. Remove the screws (1) on top of the engine air cleaner/filter housing. 5. Lift the filter cover housing away from the engine air cleaner/filter housing. 6. Pull out the filter. 7. Inspect or replace the engine air cleaner/filter. 8. Reverse Steps 2–4 to reinstall the filter cover housing. 2.4L L4 Engine 1. Screws 2. Air Duct Clamp 3. Electrical Connector To inspect or replace the engine air cleaner/filter: 1. Open the hood. See Hood 0 230. 2. Disconnect the outlet duct by loosening the air duct clamp (2). 3.6L V6 Engine AWD 1. Electrical Connector Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 2. Air Duct Clamp 3. Screws To inspect or replace the engine air cleaner/filter: 1. Open the hood. See Hood 0 230. 2. Disconnect the outlet duct by loosening the air duct clamp (2). 3. Disconnect the electrical connector (1). 4. Remove the screws (3) on top of the engine air cleaner/filter housing. 5. Lift the filter cover housing away from the engine air cleaner/filter housing. 6. Pull out the filter. 7. Inspect or replace the engine air cleaner/filter. 8. Reverse Steps 2–4 to reinstall the filter cover housing. 3.6L V6 Engine FWD 1. Electrical Connector 2. Air Duct Clamp 3. Screws 4. Secondary Air Hose To inspect or replace the engine air cleaner/filter: 1. Open the hood. See Hood 0 230. 2. Disconnect the outlet duct by loosening the air duct clamp (2). 3. Disconnect the electrical connector (1). Vehicle Care 241 4. Remove the screws (3) on top of the engine air cleaner/filter housing. 5. Disconnect the secondary air hose (4). 6. Lift the filter cover housing away from the engine air cleaner/filter housing. 7. Pull out the filter. 8. Inspect or replace the engine air cleaner/filter. 9. Reverse Steps 2–5 to reinstall the filter cover housing. { 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 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. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 242 Vehicle Care Caution 2. Coolant Surge Tank and Pressure Cap 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. 2.4L L4 Engine 1. Engine Cooling Fans (Out of View) 3.6L V6 Engine AWD 1. Engine Cooling Fans (Out of View) 2. Coolant Surge Tank and Pressure Cap 3.6L V6 Engine FWD 1. Engine Cooling Fans (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 and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- { 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. Caution Using coolant other than DEX-COOL® can cause premature engine, heater core, or radiator corrosion. In addition, the engine coolant could require changing sooner. 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 is filled with DEX-COOL® engine coolant mixture. See Recommended Fluids and Lubricants 0 324 and Maintenance Schedule 0 315. 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 0 245. 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 (Continued) Vehicle Care 243 Warning (Continued) 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. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 244 Vehicle Care Caution 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 vehicle warranty. Use only the proper mixture of engine coolant for the cooling system. See Recommended Fluids and Lubricants 0 324. 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. 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 mark pointed to, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant. Be sure the cooling system is cool before this is done. If no coolant is visible in the coolant surge tank, add coolant as follows: How to Add Coolant to the Coolant Surge Tank { Warning You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol (Continued) Warning (Continued) and it will burn if the engine parts are hot enough. Do not spill coolant on a hot engine. Caution 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. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- The coolant surge tank pressure cap can be removed when the cooling system, including the surge tank pressure cap and upper radiator hose, is no longer hot. 1. Turn the pressure cap slowly counterclockwise. If a hiss is heard, wait for that to stop. A hiss means there is still some pressure left. 2. Keep turning the cap and remove it. Vehicle Care 245 5. Replace the cap tightly. Caution 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. Engine Overheating There is a coolant temperature gauge and a engine coolant temperature warning light on the instrument cluster that indicate an overheated engine condition. See Engine Coolant Temperature Gauge 0 111 and Engine Coolant Temperature Warning Light 0 118. If the decision is made not to lift the hood when this warning appears, get service help right away. See Roadside Assistance Program 0 334. If the decision is made to lift the hood, make sure the vehicle is parked on a level surface. 3. Fill the coolant surge tank with the proper mixture to the mark pointed to on the front of the coolant surge tank. 4. With the coolant surge tank cap off, start the engine and let it run until the upper radiator hose starts getting hot. 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 mark pointed to on the front of the coolant surge tank. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 246 Vehicle Care Then check to see if the engine cooling fans are running. If the engine is overheating, the fans should be running. If not, do not continue to run the engine and have the vehicle serviced. Caution Running the engine without coolant may cause damage or a fire. Vehicle damage would not be covered by the vehicle warranty. If Steam Is Coming from the Engine Compartment See Overheated Engine Protection Operating Mode 0 246 for information on driving to a safe place in an emergency. 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 might 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. Idles for long periods in traffic. . Tows a trailer. If the overheat warning displays 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. When 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 engine coolant temperature warning light no longer displays, the vehicle can be driven. Continue to drive the vehicle slowly for about 10 minutes. Keep a safe vehicle distance from the vehicle in front. If the warning does not come back on, continue to drive normally and have the cooling system checked for proper fill and function. 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 0 246. Overheated Engine Protection Operating Mode This emergency operating mode allows the vehicle to be driven to a safe place in an emergency situation. If an overheated engine condition exists, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage. In this mode, there is significant loss in power and engine performance. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- The engine coolant temperature warning light comes on the instrument panel, to indicate the vehicle has entered overheated engine protection operating mode. The temperature gauge also indicates an overheat condition exists. Driving extended distances and/or towing a trailer in the overheat protection mode should be avoided. Power Steering Fluid (2.4L L4 Engine and 3.6L V6 Engine with FWD) The vehicle has electric power steering and does not use power steering fluid. Power Steering Fluid (3.6L V6 Engine with AWD) See Engine Compartment Overview 0 231 for information on 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 a leak is suspected in the system or an unusual noise is heard. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. How to Check Power Steering Fluid Check the level when the engine is cool. Vehicle Care 247 To check the power steering fluid: 1. Wipe the cap and the top of the reservoir clean. 2. Unscrew the cap and pull it straight up. 3. 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 fluid level should be between MIN and MAX on the dipstick. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 248 Vehicle Care What to Use To determine what kind of fluid to use, see Recommended Fluids and Lubricants 0 324. Always use the proper fluid. Washer Fluid What to Use When windshield washer fluid is needed, be sure to read the manufacturer's instructions before use. If operating the vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing. Adding Washer Fluid Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview 0 231 for reservoir location. Caution . Do not use washer fluid that contains any type of water repellent coating. This can cause the wiper blades to chatter or skip. . Do not use engine coolant (antifreeze) in the windshield washer. It can damage the windshield washer system and paint. . 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. (Continued) Caution (Continued) . When using concentrated washer fluid, follow the manufacturer instructions for adding water. . 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. 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 when the vehicle is moving, except when applying the brake pedal firmly. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- { 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. Caution 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. See Capacities and Specifications 0 328. Brake pads should be replaced as complete 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 may be required. Replacing Brake System Parts Always replace brake system parts with new, approved replacement parts. If this is not done, the brakes may not work properly. The braking performance expected can change in many other ways if the wrong replacement brake parts are installed or parts are improperly installed. Vehicle Care 249 Brake Fluid The brake master cylinder reservoir is filled with DOT 3 brake fluid as indicated on the reservoir cap. See Engine Compartment Overview 0 231 for the location of the reservoir. There are only two reasons why the brake fluid level in the reservoir may go down: . Normal brake lining wear. When new linings are installed, the fluid level goes back up. . A fluid leak in the brake hydraulic system. Have the brake hydraulic system fixed. With a leak, the brakes will not work well. Always clean the brake fluid reservoir cap and the area around the cap before removing it. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 250 Vehicle Care 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 fluid, as necessary, only when work is done on the brake hydraulic system. What to Add Use only GM approved DOT 3 brake fluid from a clean, sealed container. See Recommended Fluids and Lubricants 0 324. { Warning { 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 0 115. Brake fluid absorbs water over time. Replace brake fluid at the specified intervals to prevent increased stopping distance. See Maintenance Schedule 0 315. The wrong or contaminated brake fluid could result in damage to the brake system. This could result in the loss of braking leading to a possible injury. Always use the proper brake fluid. Caution If brake fluid is spilled on the vehicle's painted surfaces, the paint finish can be damaged. Immediately wash off any painted surface. Battery - North America The original equipment battery is maintenance free. Do not remove the cap and do not add fluid. This vehicle has a standard 12-volt battery. Refer to the replacement number on the original battery label when a new standard 12-volt battery is needed. eAssist vehicles also have a high voltage battery. Only a trained service technician with the proper knowledge and tools should inspect, test, or replace the high voltage battery. See your dealer if the high voltage battery needs service. The dealer has information on how to recycle the high voltage battery. There is also information available at http://www.recyclemybattery.com. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- The eAssist system high voltage battery is cooled with air drawn from the vehicle interior. The cold air intake for the battery is behind the rear seat, on the filler panel. Do not cover the intake. { Warning WARNING: Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Batteries also contain other chemicals known to the State of California to cause cancer. WASH HANDS AFTER HANDLING. See California Proposition 65 Warning 0 227. Vehicle Care 251 Vehicle Storage All-Wheel Drive { 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 - North America (On-board with eAssist Only) 0 298 or Jump Starting - North America (with or without eAssist) 0 299 for tips on working around a battery without getting hurt. Infrequent Usage: Remove the 12-volt battery black, negative (−) cable from the battery to keep the battery from running down. Extended Storage: Remove the 12-volt battery black, negative (−) cable from the battery or use a battery trickle charger. Remember to reconnect the battery when ready to drive the vehicle. Transfer Case Under normal driving conditions, transfer case fluid does not require maintenance unless there is a fluid leak or unusual noise. If required, have the transfer case serviced by your dealer. 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. 2. Apply both the parking brake and the regular brake. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 252 Vehicle Care Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts. 3. 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. 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. Apply the parking brake. 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 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 If equipped with a key type ignition, 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). . The ignition key should come out only in LOCK/OFF. Contact your dealer if service is required. 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. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- . 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 and cracking. See Maintenance Schedule 0 315 for more information. Replacement blades come in different types and are removed in different ways. For proper type and length, see Maintenance Replacement Parts 0 325. To replace the windshield wiper blade: 1. Pull the windshield wiper assembly away from the windshield. 2. Lift up on the latch in the middle of the wiper blade where the wiper arm attaches. 3. With the latch open, pull the wiper blade down toward the windshield far enough to release it from the J-hooked end of the wiper arm. 4. Remove the wiper blade. 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 the vehicle Vehicle Care 253 warranty. Do not allow the wiper blade to touch the windshield. 5. Reverse Steps 1–3 for wiper blade replacement. Windshield Replacement HUD System The windshield is part of the HUD system. If the windshield must be replaced, get one that is designed for HUD or the HUD image may look out of focus. Driver Assistance Systems When a windshield replacement is needed and the vehicle is equipped with a front-looking camera sensor for the Driver Assistance Systems, the windshield must be installed according to GM specifications for these systems to work properly. If it is not, there may be unexpected behavior and/or messages from these systems. See Object Detection System Messages 0 134. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 254 Vehicle Care 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 0 257. For any bulb changing procedure not listed in this section, see 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. High Intensity Discharge (HID) Lighting { Warning The 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. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- Headlamps, Front Turn Signal and Parking Lamps Base Headlamp Assembly The base model vehicle has a halogen high/low-beam headlamp, parking lamp, and a turn signal lamp on the headlamp assembly. For replacement of the turn signal lamp bulb on an eAssist vehicle, contact your dealer. To replace one of these bulbs: 1. Open the hood. See Hood 2. 3. 0 230. If replacing a headlamp bulb, remove the dust cover from the back of the headlamp housing by turning counterclockwise one-quarter turn. If replacing a turn signal lamp bulb on a non-eAssist vehicle, remove the close out panel push pins and close out panel covering the bulb socket. 4. Remove the bulb socket from the headlamp by turning counterclockwise one-quarter turn. Vehicle Care 255 turn signal lamp on the headlamp assembly. See High Intensity Discharge (HID) Lighting 0 254. To replace the turn signal bulb: 1. Open the hood. See Hood 5. Remove the bulb from the 0 230. socket. If replacing the high/ low-beam bulb, pry the two clips on either end of the bulb and pull straight out. 6. Reverse Steps 1–5 to install. Uplevel Headlamp Assembly The uplevel model vehicle has a high intensity discharge (HID) high/ low beam, DRL/parking lamp, and a 2. Turn the bulb socket counterclockwise to remove it from the headlamp assembly. 3. Pull the bulb straight out from the socket. 4. Reverse Steps 1–3 to install. 1. Headlamp 2. Turn Signal Lamp Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 4. Pull out the taillamp assembly and disconnect the wiring harness. 5. Turn the bulb socket counterclockwise to remove it. 6. Pull the old bulb straight out of the bulb socket. 7. Reverse Steps 1–6 to install. License Plate Lamp The license plate lamps for this vehicle are on the trunk lid. To replace one of these bulbs: 1. Open the trunk. See Trunk 0 38. 2. Push the end on either of the lamp assemblies (passenger side shown) and then move the lamp assembly down to remove it from the trunk lid. 256 Vehicle Care Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps 1. Back-Up Lamp 2. Turn Signal Lamp To replace one of these lamps: 1. Open the trunk. See Trunk 0 38. 2. Remove the fasteners and pull back the trunk trim. 3. Remove the four plastic wing nuts holding the taillamp assembly in place. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- Replacement Bulbs Electrical System Vehicle Care 257 Exterior Lamp Back-Up Lamp Front Turn Signal Lamp Headlamp High Beam (Base) Headlamp Low Beam (Base) License Plate Lamp Rear Turn Signal Bulb Number 921LL (W16W) 7444NA HIR2 HIR2 W5WLL 7443NA (WY21W) For replacement bulbs not listed here, contact your dealer. High Voltage Devices and Wiring { Warning Exposure to high voltage can cause shock, burns, and even death. The high voltage components in the vehicle can only be serviced by technicians with special training. High voltage components are identified by labels. Do not remove, open, take apart, or modify these components. High voltage cable or wiring has orange covering. Do not probe, tamper with, cut, or modify high voltage cable or wiring. Electrical System Overload The vehicle has fuses and circuit breakers to protect against an electrical system overload. 3. Turn the bulb socket (1) counterclockwise to remove it from the lamp assembly (3). 4. Pull the bulb (2) straight out of the bulb socket. 5. Push the replacement bulb straight into the bulb socket and turn the bulb socket clockwise to install it into the lamp assembly. 6. Move the lamp assembly into the trunk lid, engaging the clip side first. 7. Push on the lamp side opposite the clip until the lamp assembly snaps into place. Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 258 Vehicle Care 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. 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. 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 possible. To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse Block 0 258 and Instrument Panel Fuse Block 0 262. Engine Compartment Fuse Block Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- Vehicle Care 259 To remove the fuse block cover, squeeze the three retaining clips on the cover and lift it straight up. Caution Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component. The vehicle may not be equipped with all of the fuses, relays, and features shown. J-Case Fuses 12 21 Usage Wiper Starter Rear Power Windows J-Case Fuses Usage 22 24 25 26 Sunroof Front Power Windows Rear Heated Seats Antilock Brake System Pump Buick LaCrosse Owner Manual 9159288) - 2016 - crc - 5/5/15 (GMNA-Localizing-U.S./Canada/Mexico- 260 Vehicle Care J-Case Fuses 27

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2016 Buick Lacrosse Owners Manual