Download PDF Manual

4. Use the thumbwheel to scroll to


the Tire Pressure Menu Item screen.


Buick LaCrosse Owner Manual - 2011


Black plate (60,1)


10-60


Vehicle Care


5. Press the SET/CLR button to


8. Place the relearn tool against


begin the sensor matching process. A message asking if the process should begin should appear.


6. Press the SET/CLR button again


to confirm the selection. The horn sounds twice to signal the receiver is in relearn mode and the TIRE LEARNING ACTIVE message displays on the DIC screen.


7. Start with the driver side


front tire.


the tire sidewall, near the valve stem. Then press the button to activate the TPMS sensor. A horn chirp confirms that the sensor identification code has been matched to this tire and wheel position.


9. Proceed to the passenger


side front tire, and repeat the procedure in Step 8.


10. Proceed to the passenger


side rear tire, and repeat the procedure in Step 8.


11. Proceed to the driver side rear tire, and repeat the procedure in Step 8. The horn sounds two times to indicate the sensor identification code has been matched to the driver side rear tire, and the TPMS sensor matching process is no longer active. The TIRE LEARNING ACTIVE message on the DIC display screen goes off.


12. Turn the ignition to LOCK/OFF. 13. Set all four tires to the


recommended air pressure level as indicated on the Tire and Loading Information label.


Buick LaCrosse Owner Manual - 2011


Black plate (61,1)


Tire Inspection GM recommends that the tires, including the spare tire, if the vehicle has one, be inspected for signs of wear or damage at least once a month. Replace the tire if: . The indicators at three or


more places around the tire can be seen.


. There is cord or fabric


showing through the tire's rubber.


. The tread or sidewall is


cracked, cut, or snagged deep enough to show cord or fabric.


. The tire has a bump, bulge,


or split.


. The tire has a puncture, cut, or other damage that cannot be repaired well because of the size or location of the damage.


Tire Rotation Tires should be rotated every 12 000 km (7,500 mi). See Scheduled Maintenance on page 11‑2. The purpose of a regular tire rotation is to achieve a uniform wear for all tires on the vehicle. This will ensure that the vehicle continues to perform most like it did when the tires were new.


Vehicle Care


10-61


Any time you notice unusual wear, rotate the tires as soon as possible and check wheel alignment. Also check for damaged tires or wheels. See When It Is Time for New Tires on page 10‑63 and Wheel Replacement on page 10‑68.


When rotating the vehicle's tires, always use the correct rotation pattern shown here.


Buick LaCrosse Owner Manual - 2011


Black plate (62,1)


Lightly coat the center of the wheel hub with wheel bearing grease after a wheel change or tire rotation to prevent corrosion or rust build-up. Do not get grease on the flat wheel mounting surface or on the wheel nuts or bolts.


10-62


Vehicle Care


Do not include the compact spare tire in the tire rotation. After the tires have been rotated, adjust the front and rear inflation pressures as shown on the Tire and Loading Information label. See Tire Pressure on page 10‑54
and Vehicle Load Limits on page 9‑12. Reset the Tire Pressure Monitor System. See Tire Pressure Monitor Operation on page 10‑57.


Make certain that all wheel nuts are properly tightened. See “Wheel Nut Torque” under Capacities and Specifications on page 12‑2.


{ WARNING


Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if needed, to get all the rust or dirt off. See If a Tire Goes Flat on page 10‑70.


Buick LaCrosse Owner Manual - 2011


Black plate (63,1)


the tires have only 1.6 mm (1/16 in) or less of tread remaining. See Tire Inspection on page 10‑61 and Tire Rotation on page 10‑61 for more information. The rubber in tires ages over time. This also applies for the spare tire, if the vehicle has one, even if it is never used. Multiple conditions including temperatures, loading conditions, and inflation pressure maintenance affect how fast aging takes place. Tires will typically need to be replaced due to wear before they may need to be replaced due to age. Consult the tire manufacturer for more information on when tires should be replaced.


Vehicle Care


10-63


Vehicle Storage Tires age when stored normally mounted on a parked vehicle. Park a vehicle that will be stored for at least a month in a cool, dry, clean area away from direct sunlight to slow aging. This area should be free of grease, gasoline, or other substances that can deteriorate rubber. Parking for an extended period can cause flat spots on the tires that may result in vibrations while driving. When storing a vehicle for at least a month, remove the tires or raise the vehicle to reduce the weight from the tires.


When It Is Time for New Tires Factors such as maintenance, temperatures, driving speeds, vehicle loading, and road conditions affect the wear rate of the tires.


Treadwear indicators are one way to tell when it is time for new tires. Treadwear indicators appear when


Buick LaCrosse Owner Manual - 2011


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Vehicle Care


Buying New Tires GM has developed and matched specific tires for the vehicle. The original equipment tires installed on the vehicle, when it was new, were designed to meet General Motors Tire Performance Criteria Specification (TPC Spec) system rating. If you need replacement tires, GM strongly recommends that you get tires with the same TPC Spec rating. This way, the vehicle will continue to have tires that are designed to give the same performance and vehicle safety, during normal use, as the original tires.


GM's exclusive TPC Spec system considers over a dozen critical specifications that impact the overall performance of the vehicle, including brake system performance, ride and handling, traction control, and tire pressure monitoring performance. GM's TPC Spec number is molded onto the tire's sidewall near the tire size. If the tires have an all‐season tread design, the TPC Spec number will be followed by an MS for mud and snow. See Tire Sidewall Labeling on page 10‑48 for additional information. GM recommends replacing tires in sets of four. This is because uniform tread depth on all tires


will help keep the vehicle performing most like it did when the tires were new. Replacing less than a full set of tires can affect the braking and handling performance of the vehicle. See Tire Inspection on page 10‑61 and Tire Rotation on page 10‑61 for information on proper tire rotation.


{ WARNING Tires could explode during improper service. Attempting to mount or dismount a tire could cause injury or death. Only your dealer or authorized tire service center should mount or dismount the tires.


Buick LaCrosse Owner Manual - 2011


Black plate (65,1)


{ WARNING


{ WARNING


Mixing tires could cause you to lose control while driving. If you mix tires of different sizes, brands, or types (radial and bias-belted tires), the vehicle may not handle properly, and you could have a crash. Using tires of different sizes, brands, or types may also cause damage to the vehicle. Be sure to use the correct size, brand, and type of tires on all wheels. It is all right to drive with the compact spare temporarily, as it was developed for use on the vehicle. See Compact Spare Tire on page 10‑85.


Using bias-ply tires on the vehicle may cause the wheel rim flanges to develop cracks after many miles of driving. A tire and/or wheel could fail suddenly and cause a crash. Use only radial-ply tires with the wheels on the vehicle.


If you must replace the vehicle's tires with those that do not have a TPC Spec number, make sure they are the same size, load range, speed rating, and construction type (radial and bias‐belted tires) as the vehicle's original tires.


Vehicle Care


10-65


Vehicles that have a tire pressure monitoring system could give an inaccurate low‐pressure warning if non‐TPC Spec rated tires are installed on the vehicle. Non‐TPC Spec rated tires may give a low‐pressure warning that is higher or lower than the proper warning level you would get with TPC Spec rated tires. See Tire Pressure Monitor System on page 10‑56. The vehicle's original equipment tires are listed on the Tire and Loading Information label. See Vehicle Load Limits on page 9‑12 for more information about the Tire and Loading Information label and its location on the vehicle.


Buick LaCrosse Owner Manual - 2011


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Vehicle Care


Different Size Tires and Wheels If wheels or tires are installed that are a different size than the original equipment wheels and tires, vehicle performance, including its braking, ride and handling characteristics, stability, and resistance to rollover may be affected. If the vehicle has electronic systems such as antilock brakes, rollover airbags, traction control, and electronic stability control, the performance of these systems can also be affected.


{ WARNING


If different sized wheels are used, there may not be an acceptable level of performance and safety if tires not recommended for those wheels are selected. This increases the chance of a crash and serious injury. Only use GM specific wheel and tire systems developed for the vehicle, and have them properly installed by a GM certified technician.


See Buying New Tires on page 10‑64 and Accessories and Modifications on page 10‑3
for additional information.


Uniform Tire Quality Grading Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example:


Treadwear 200 Traction AA Temperature A The following information relates to the system developed by the United States National Highway Traffic Safety Administration (NHTSA), which grades tires by treadwear, traction, and temperature performance. This applies only to vehicles sold in the United States.


Buick LaCrosse Owner Manual - 2011


Black plate (67,1)


The grades are molded on the sidewalls of most passenger car tires. The Uniform Tire Quality Grading (UTQG) system does not apply to deep tread, winter-type snow tires, space-saver, or temporary use spare tires, tires with nominal rim diameters of 10 to 12 inches (25 to 30 cm), or to some limited-production tires. While the tires available on General Motors passenger cars and light trucks may vary with respect to these grades, they must also conform to federal safety requirements and additional General Motors Tire Performance Criteria (TPC) standards. All Passenger Car Tires Must Conform to Federal Safety Requirements In Addition To These Grades.


Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one and a half (1½) times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate.


Vehicle Care


10-67


Traction – AA, A, B, C The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire's ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance. Warning: The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.


Buick LaCrosse Owner Manual - 2011


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Vehicle Care


Temperature – A, B, C The temperature grades are A (the highest), B, and C, representing the tire's resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law. Warning: The temperature grade for this tire is


established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.


Wheel Alignment and Tire Balance The tires and wheels were aligned and balanced at the factory to provide the longest tire life and best overall performance. Adjustments to wheel alignment and tire balancing will not be necessary on a regular basis. However, check the alignment if there is unusual tire wear or if the vehicle is pulling to one side or the other. If the vehicle vibrates when driving on a smooth road, the tires and wheels might need to be rebalanced. See your dealer for proper diagnosis.


Wheel Replacement Replace any wheel that is bent, cracked, or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts, and wheel nuts should be replaced. If the wheel leaks air, replace it. Some aluminum wheels can be repaired. See your dealer if any of these conditions exist. Your dealer will know the kind of wheel that is needed. Each new wheel should have the same load-carrying capacity, diameter, width, offset, and be mounted the same way as the one it replaces. Replace wheels, wheel bolts, wheel nuts, or Tire Pressure Monitor System (TPMS) sensors with new GM original equipment parts.


Buick LaCrosse Owner Manual - 2011


Black plate (69,1)


{ WARNING


Using the wrong replacement wheels, wheel bolts, or wheel nuts can be dangerous. It could affect the braking and handling of the vehicle. Tires can lose air, and cause loss of control, causing a crash. Always use the correct wheel, wheel bolts, and wheel nuts for replacement.


Notice: The wrong wheel can also cause problems with bearing life, brake cooling, speedometer or odometer calibration, headlamp aim, bumper height, vehicle ground clearance, and tire or tire chain clearance to the body and chassis. See If a Tire Goes Flat on page 10‑70 for more information.


Used Replacement Wheels


{ WARNING


Replacing a wheel with a used one is dangerous. How it has been used or how far it has been driven may be unknown. It could fail suddenly and cause a crash. When replacing wheels, use a new GM original equipment wheel.


Tire Chains


{ WARNING


Do not use tire chains. There is not enough clearance. Tire chains used on a vehicle without the proper amount of clearance can cause damage to the brakes, suspension or other vehicle parts. (Continued)


Vehicle Care


10-69


WARNING (Continued)


The area damaged by the tire chains could cause you to lose control of the vehicle and you or others may be injured in a crash. Use another type of traction device only if its manufacturer recommends it for use on the vehicle and tire size combination and road conditions. Follow that manufacturer's instructions. To help avoid damage to the vehicle, drive slowly, readjust or remove the device if it is contacting the vehicle, and do not spin the vehicle's wheels. If you do find traction devices that will fit, install them on the front tires.


Buick LaCrosse Owner Manual - 2011


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Vehicle Care


If a Tire Goes Flat It is unusual for a tire to blowout, especially if the tires are maintained properly. See Tires. If air goes out of a tire, it is much more likely to leak out slowly. But if there is ever a blowout, here are a few tips about what to expect and what to do: If a front tire fails, the flat tire creates a drag that pulls the vehicle toward that side. Take your foot off the accelerator pedal and grip the steering wheel firmly. Steer to maintain lane position, and then gently brake to a stop, well off the road, if possible. AA rear blowout, particularly on a curve, acts much like a skid and may require the same correction as used in a skid. Stop pressing


the accelerator pedal and steer to straighten the vehicle. It may be very bumpy and noisy. Gently brake to a stop, well off the road, if possible.


{ WARNING


Driving on a flat tire will cause permanent damage to the tire. Re-inflating a tire after it has been driven on while severely underinflated or flat may cause a blowout and a serious crash. Never attempt to re-inflate a tire that has been driven on while severely underinflated or flat. Have your dealer or an authorized tire service center repair or replace the flat tire as soon as possible.


{ WARNING Lifting a vehicle and getting under it to do maintenance or repairs is dangerous without the appropriate safety equipment and training. If a jack is provided with the vehicle, it is designed only for changing a flat tire. If it is used for anything else, you or others could be badly injured or killed if the vehicle slips off the jack. If a jack is provided with the vehicle, only use it for changing a flat tire.


If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place, well off the road, if possible. Turn on the hazard warning flashers. See Hazard Warning Flashers on page 6‑4.


Buick LaCrosse Owner Manual - 2011


Black plate (71,1)


{ WARNING


Changing a tire can be dangerous. The vehicle can slip off the jack and roll over or fall causing injury or death. Find a level place to change the tire. To help prevent the vehicle from moving:


1. Set the parking brake firmly. 2. Put an automatic


transmission shift lever in P (Park), or shift a manual transmission to 1 (First) or R (Reverse).


(Continued)


WARNING (Continued)


3. Turn off the engine and do not restart while the vehicle is raised.


4. Do not allow passengers to


remain in the vehicle. 5. Place wheel blocks on


both sides of the tire at the opposite corner of the tire being changed.


This vehicle may come with a jack and spare tire or a tire sealant and compressor kit. To use the jacking equipment to change a spare tire safely, follow the instructions below. Then see Tire Changing on page 10‑79. To use the tire sealant and compressor kit, see Tire Sealant and Compressor Kit on page 10‑72.


Vehicle Care


10-71


When the vehicle has a flat tire (B), use the following example as a guide to assist you in the placement of wheel blocks (A).


A. Wheel Block B. Flat Tire The following information explains how to repair or change a tire.


Buick LaCrosse Owner Manual - 2011


Black plate (72,1)


10-72


Vehicle Care


Tire Sealant and Compressor Kit


{ WARNING


Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine exhaust may enter the vehicle. Engine exhaust contains Carbon Monoxide (CO) which cannot be seen or smelled. It can cause unconsciousness and even death. Never run the engine in an enclosed area that has no fresh air ventilation. For more information, see Engine Exhaust on page 9‑27.


{ WARNING


Overinflating a tire could cause the tire to rupture and you or others could be injured. Be sure to read and follow the tire sealant and compressor kit instructions and inflate the tire to its recommended pressure. Do not exceed the recommended pressure.


{ WARNING Storing the tire sealant and compressor kit or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store the tire sealant and compressor kit in its original location.


If this vehicle has a tire sealant and compressor kit, there may not be a spare tire, tire changing equipment, and on some vehicles there may not be a place to store a tire. The tire sealant and compressor can be used to temporarily seal punctures up to 6 mm (¼ in) in the tread area of the tire. It can also be used to inflate an under inflated tire. If the tire has been separated from the wheel, has damaged sidewalls, or has a large puncture, the tire is too severely damaged for the tire sealant and compressor kit to be effective. See Roadside Assistance Program (U.S. and Canada) on page 13‑8 or Roadside Assistance Program (Mexico) on page 13‑10. Read and follow all of the tire sealant and compressor kit instructions.


Buick LaCrosse Owner Manual - 2011


Black plate (73,1)


Tire Sealant Read and follow the safe handling instructions on the label adhered to the compressor. Check the tire sealant expiration date on the sealant canister. The sealant canister should be replaced before its expiration date. Replacement sealant canisters are available at your local dealer. See “Removal and Installation of the Sealant Canister” following. There is only enough sealant to seal one tire. After usage, the sealant canister and sealant/air hose assembly must be replaced. See “Removal and Installation of the Sealant Canister” following.


The kit includes:


A. On/Off Button B. Selector Switch


(Sealant/Air or Air Only)


C. Pressure Relief Button D. Pressure Gauge E. Air Only Hose (Black) F. Sealant/Air Hose (Clear) G. Power Plug


Vehicle Care


10-73


Using the Tire Sealant and Compressor Kit to Temporarily Seal and Inflate a Punctured Tire Follow the directions closely for correct sealant usage.


When using the tire sealant and compressor kit during cold temperatures, warm the kit in a heated environment for five minutes. This will help to inflate the tire faster.


Buick LaCrosse Owner Manual - 2011


Black plate (74,1)


10-74


Vehicle Care


If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on the hazard warning flashers. See Hazard Warning Flashers on page 6‑4. See If a Tire Goes Flat on page 10‑70 for other important safety warnings. Do not remove any objects that have penetrated the tire. 1. Remove the tire sealant and


compressor kit from its storage location. See Storing the Tire Sealant and Compressor Kit on page 10‑79.


2. Unwrap the sealant/air hose (F)


and the power plug (G).


3. Place the kit on the ground.


5. Attach the sealant/air hose (F) onto the tire valve stem. Turn it clockwise until it is tight.


6. Plug the power plug (G) into the


accessory power outlet in the vehicle. Unplug all items from other accessory power outlets. See Power Outlets on page 5‑7. If the vehicle has an accessory power outlet, do not use the cigarette lighter. If the vehicle only has a cigarette lighter, use the cigarette lighter. Do not pinch the power plug cord in the door or window.


7. Start the vehicle. The vehicle


must be running while using the air compressor.


Make sure the tire valve stem is positioned close to the ground so the hose will reach it.


8. Turn the selector switch (B)


clockwise to the Sealant + Air position.


4. Remove the valve stem cap from the flat tire by turning it counterclockwise.


9. Press the on/off (A) button to turn the tire sealant and compressor kit on. The compressor will inject sealant and air into the tire. The pressure gauge (D) will initially show a high pressure while the compressor pushes the sealant into the tire. Once the sealant is completely dispersed into the tire, the pressure will quickly drop and start to rise again as the tire inflates with air only.


10.


Inflate the tire to the recommended inflation pressure using the pressure gauge (D). The recommended inflation pressure can be found on the Tire and Loading Information label. See Tire Pressure on page 10‑54.


Buick LaCrosse Owner Manual - 2011


Black plate (75,1)


The pressure gauge (D) may read higher than the actual tire pressure while the compressor is on. Turn the compressor off to get an accurate pressure reading. The compressor may be turned on/off until the correct pressure is reached.


Notice: If the recommended pressure cannot be reached after approximately 25 minutes, the vehicle should not be driven farther. The tire is too severely damaged and the tire sealant and compressor kit cannot inflate the tire. Remove the power plug from the accessory power outlet and unscrew the inflating hose from the tire valve. See Roadside Assistance Program (U.S. and Canada) on page 13‑8 or Roadside Assistance Program (Mexico) on page 13‑10.


11. Press the on/off button (A) to turn the tire sealant and compressor kit off. The tire is not sealed and will continue to leak air until the vehicle is driven and the sealant is distributed in the tire; therefore, Steps 12 through 18
must be done immediately after Step 11. Be careful while handling the tire sealant and compressor kit as it could be warm after usage.


12. Unplug the power plug (G) from


the accessory power outlet in the vehicle.


13. Turn the sealant/air hose (F) counterclockwise to remove it from the tire valve stem.


14. Replace the tire valve


stem cap.


Vehicle Care


10-75


15. Return the sealant/air hose (F) and the power plug (G) back in their original locations.


16.


If the flat tire was able to inflate to the recommended inflation pressure, remove the maximum speed label from the sealant canister and place it in a highly visible location. Do not exceed the speed on this label until the damaged tire is repaired or replaced. 17. Return the equipment to its


18.


original storage location in the vehicle. Immediately drive the vehicle 8 km (5 mi) to distribute the sealant in the tire.


Buick LaCrosse Owner Manual - 2011


Black plate (76,1)


10-76


Vehicle Care


19. Stop at a safe location and


20. Wipe off any sealant from the


wheel, tire, and vehicle.


21. Dispose of the used sealant


canister and sealant/air hose (F) assembly at a local dealer or in accordance with local state codes and practices.


22. Replace it with a new canister


available from your dealer.


23. After temporarily sealing


a tire using the tire sealant and compressor kit, take the vehicle to an authorized dealer within 161 km (100 mi) of driving to have the tire repaired or replaced.


check the tire pressure. Refer to Steps 1 through 11
under “Using the Tire Sealant and Compressor Kit without Sealant to Inflate a Tire (Not Punctured).” If the tire pressure has fallen more than 68 kPa (10 psi) below the recommended inflation pressure, stop driving the vehicle. The tire is too severely damaged and the tire sealant cannot seal the tire. See Roadside Assistance Program (U.S. and Canada) on page 13‑8 or Roadside Assistance Program (Mexico) on page 13‑10. If the tire pressure has not dropped more than 68 kPa (10 psi) from the recommended inflation pressure, use the compressor kit to inflate the tire to the recommended inflation pressure.


Using the Tire Sealant and Compressor Kit without Sealant to Inflate a Tire (Not Punctured) To use the air compressor to inflate a tire with air only and not sealant:


If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on the hazard warning flashers. See Hazard Warning Flashers on page 6‑4.


Buick LaCrosse Owner Manual - 2011


Black plate (77,1)


See If a Tire Goes Flat on page 10‑70 for other important safety warnings. 1. Remove the tire sealant and


compressor kit from its storage location. See Storing the Tire Sealant and Compressor Kit on page 10‑79.


2. Unwrap the air only hose (E)


and the power plug (G).


3. Place the kit on the ground.


Make sure the tire valve stem is positioned close to the ground so the hose will reach it.


4. Remove the tire valve stem cap


from the flat tire by turning it counterclockwise.


5. Attach the air only hose (E) onto


the tire valve stem by turning it clockwise until it is tight.


6. Plug the power plug (G) into the


10.


accessory power outlet in the vehicle. Unplug all items from other accessory power outlets. See Power Outlets on page 5‑7. If the vehicle has an accessory power outlet, do not use the cigarette lighter. If the vehicle only has a cigarette lighter, use the cigarette lighter. Do not pinch the power plug cord in the door or window.


7. Start the vehicle. The vehicle


must be running while using the air compressor.


8. Turn the selector switch (B) counterclockwise to the Air Only position.


9. Press the on/off (A) button to


turn the compressor on. The compressor will inflate the tire with air only.


Vehicle Care


10-77


Inflate the tire to the recommended inflation pressure using the pressure gauge (D). The recommended inflation pressure can be found on the Tire and Loading Information label. See Tire Pressure on page 10‑54. The pressure gauge (D) may read higher than the actual tire pressure while the compressor is on. Turn the compressor off to get an accurate reading. The compressor may be turned on/off until the correct pressure is reached. If the tire is inflated higher than the recommended pressure, press the pressure relief button (C), if equipped, until the proper pressure reading is reached. This option is only functional when using the air only hose (E).


Buick LaCrosse Owner Manual - 2011


Black plate (78,1)


10-78


Vehicle Care


11. Press the on/off button (A) to


turn the tire sealant and compressor kit off. Be careful while handling the tire sealant and compressor kit as it could be warm after usage.


12. Unplug the power plug (G) from


the accessory power outlet in the vehicle.


13. Disconnect the air only


hose (E) from the tire valve stem, by turning it counterclockwise, and replace the tire valve stem cap.


14. Return the air only hose (E) and the power plug (G) back to their original locations.


15. Return the equipment to its original storage location in the vehicle.


Removal and Installation of the Sealant Canister To remove the sealant canister:


3. Pull up on the canister (A) to


remove it.


4. Replace with a new canister which is available from your dealer.


5. Push the new canister into


place.


6. Screw the connector (B) to the


canister (A).


7. Slide the plastic cover back on.


1. Remove the plastic cover. 2. Unscrew the connector (B) from


the canister (A).


Buick LaCrosse Owner Manual - 2011


Black plate (79,1)


Storing the Tire Sealant and Compressor Kit To access the tire sealant and compressor kit: 1. Open the trunk. See Trunk on


page 2‑12.


2. Lift the cover.


Tire Changing


Removing the Spare Tire and Tools The equipment you need is located in the trunk. 1. Open the trunk. 2. Remove the spare tire cover.


Vehicle Care


10-79


5. The jack and tools are stored


below the spare tire.


This vehicle will have either a coin/pierce jack (D) and a jack handle extension (C) or a hex head jack (B) and a jack lift assist tool (A). Place the tools next to the tire being changed.


3. Turn the wing nut


counterclockwise to remove it.


4. Remove the tire sealant and


compressor kit.


To store the tire sealant and compressor kit, reverse the steps.


3. Turn the retainer nut counterclockwise and remove the spare tire.


4. Place the spare tire next to the


tire being changed.


Buick LaCrosse Owner Manual - 2011


Black plate (80,1)


10-80


Vehicle Care


Removing the Flat Tire and Installing the Spare Tire 1. Do a safety check before


proceeding. See If a Tire Goes Flat on page 10‑70 for more information.


2. Turn the wheel wrench


counterclockwise to loosen the wheel nut caps. If needed, finish loosening them by hand. The nut caps will not come off of the wheel cover. The edge of the wheel cover could be sharp, so do not try to remove the cover with your bare hands. Do not drop the cap or lay it face down, as it could become scratched or damaged. Store the wheel cover in the trunk until you have the flat tire repaired or replaced.


3. Turn the wheel wrench


4. Position the jack head, as


counterclockwise to loosen all the wheel nuts, but do not remove them yet.


Notice: Make sure that the jack lift head is in the correct position or you may damage your vehicle. The repairs would not be covered by your warranty.


shown. Set the jack to the necessary height before positioning it below the jacking point.


Buick LaCrosse Owner Manual - 2011


Black plate (81,1)


Vehicle Care


10-81


{ WARNING Lifting a vehicle and getting under it to do maintenance or repairs is dangerous without the appropriate safety equipment and training. If a jack is provided with the vehicle, it is designed only for changing a flat tire. If it is used for anything else, you or others could be badly injured or killed if the vehicle slips off the jack. If a jack is provided with the vehicle, only use it for changing a flat tire.


{ WARNING


Getting under a vehicle when it is jacked up is dangerous. If the vehicle slips off the jack, you could be badly injured or killed. Never get under a vehicle when it is supported only by a jack.


{ WARNING Raising the vehicle with the jack improperly positioned can damage the vehicle and even make the vehicle fall. To help avoid personal injury and vehicle damage, be sure to fit the jack lift head into the proper location before raising the vehicle.


5.


Coin/Pierce Jack Shown,


Hex Head Jack Similar


If you have a coin/pierce jack, attach the jack handle extension to the jack by sliding the hook through the end of the jack. If you have a hex head jack, attach the jack lift assist tool to the jack by fitting both ends of the jack and tool over one another.


Buick LaCrosse Owner Manual - 2011


Black plate (82,1)


10-82


Vehicle Care


WARNING (Continued)


In an emergency, use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if needed, to get all the rust or dirt off. See If a Tire Goes Flat on page 10‑70.


Hex Head Jack Shown, Coin/Pierce Jack Similar


6. Turn the jack handle clockwise to raise the vehicle far enough off the ground for the compact spare to fit under the vehicle.


7. Remove all of the wheel nuts. 8. Remove the flat tire.


{ WARNING


Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle.


(Continued)


9. Remove any rust or dirt from the wheel bolts, mounting surfaces, and spare wheel.


Buick LaCrosse Owner Manual - 2011


Black plate (83,1)


Vehicle Care


10-83


10.


Install the compact spare tire.


{ WARNING


Never use oil or grease on bolts or nuts because the nuts might come loose. The vehicle's wheel could fall off, causing a crash.


11. Put the wheel nuts back on with the rounded end of the nuts toward the wheel. Turn each nut clockwise by hand until the wheel is held against the hub.


12. Lower the vehicle by


turning the jack handle counterclockwise. Lower the jack completely. { WARNING


Wheel nuts that are improperly or incorrectly tightened can cause the wheels to become loose or


(Continued)


WARNING (Continued)


come off. The wheel nuts should be tightened with a torque wrench to the proper torque specification after replacing. Follow the torque specification supplied by the aftermarket manufacturer when using accessory locking wheel nuts. See Capacities and Specifications on page 12‑2 for original equipment wheel nut torque specifications.


Notice: Improperly tightened wheel nuts can lead to brake pulsation and rotor damage. To avoid expensive brake repairs, evenly tighten the wheel nuts in the proper sequence and to the proper torque specification. See Capacities and Specifications on page 12‑2 for the wheel nut torque specification.


13. Tighten the wheel nuts firmly in a crisscross sequence, as shown.


14. Lower the jack all the way and remove the jack from under the vehicle.


15. Tighten the wheel nuts firmly


with the wheel wrench.


Notice: Wheel covers will not fit on the vehicle's compact spare. If you try to put a wheel cover on the compact spare, the cover or the spare could be damaged.


Buick LaCrosse Owner Manual - 2011


Black plate (84,1)


10-84


Vehicle Care


Storing a Flat or Spare Tire and Tools


{ WARNING


Storing a jack, a tire, or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place.


To store the flat or spare tire and tools: 1.


If the flat tire is larger than the spare tire, use the longer mounting bolt.


2. Slide the shorter bolt to remove


it from the floor and insert the longer one.


3. Replace the jack and tools in their original storage location.


4. Place the tire, lying flat, facing


up in the spare tire well. Secure it with the retainer nut. Place the floor cover over the tire even though it may not lay flat if the tire is larger than the spare.


The compact spare is for temporary use only. Replace the compact spare tire with a full-size tire as soon as you can.


Buick LaCrosse Owner Manual - 2011


Black plate (85,1)


Vehicle Care


10-85


Do not use the compact spare on other vehicles. Do not mix the compact spare tire or wheel with other wheels or tires. They will not fit. Keep the spare tire and its wheel together. Notice: Tire chains will not fit the compact spare. Using them can damage the vehicle and can damage the chains too. Do not use tire chains on the compact spare.


Compact Spare Tire { WARNING Driving with more than one compact spare tire at a time could result in loss of braking and handling. This could lead to a crash and you or others could be injured. Use only one compact spare tire at a time.


If this vehicle has a compact spare tire, it was fully inflated when the vehicle was new; however, it can lose air after a time. Check the inflation pressure regularly. It should be 420 kPa (60 psi).


After installing the compact spare on the vehicle, stop as soon as possible and make sure the spare tire is correctly inflated. The compact spare is made to perform well at speeds up to 105 km/h (65 mph) for distances up to 5 000 km (3,000 mi), so you can finish your trip and have the full-size tire repaired or replaced at your convenience. Of course, it is best to replace the spare with a full-size tire as soon as possible. The spare tire will last longer and be in good shape in case it is needed again. Notice: When the compact spare is installed, do not take the vehicle through an automatic car wash with guide rails. The compact spare can get caught on the rails which can damage the tire, wheel and other parts of the vehicle.


Buick LaCrosse Owner Manual - 2011


Black plate (86,1)


10-86


Vehicle Care


Jump Starting For more information about the vehicle battery, see Battery on page 10‑27. If the battery has run down, try to use another vehicle and some jumper cables to start your vehicle. Be sure to use the following steps to do it safely.


{ WARNING


Batteries can hurt you. They can be dangerous because:


. They contain acid that can


burn you.


. They contain gas that can


explode or ignite.


. They contain enough electricity to burn you.


If you do not follow these steps exactly, some or all of these things can hurt you.


Notice: Ignoring these steps could result in costly damage to the vehicle that would not be covered by the warranty. Trying to start the vehicle by pushing or pulling it will not work, and it could damage the vehicle. The jump start positive (A) is located under a trim cover in the engine compartment on the driver side of the vehicle.


This post is used instead of a direct connection to the battery.


1. Check the other vehicle. It must


have a 12-volt battery with a negative ground system. Notice: Only use a vehicle that has a 12-volt system with a negative ground for jump starting. If the other vehicle does not have a 12-volt system with a negative ground, both vehicles can be damaged. 2. Position the two vehicles so that


they are not touching.


Buick LaCrosse Owner Manual - 2011


Black plate (87,1)


3. Set the parking brake firmly and


put the shift lever in P (Park). See Shifting Into Park on page 9‑25.


Notice: If the radio or other accessories are left on during the jump starting procedure, they could be damaged. The repairs would not be covered by the warranty. Always turn off the radio and other accessories when jump starting the vehicle. 4. Turn the ignition to LOCK/OFF


and switch off all lights and accessories in both vehicles, except the hazard warning flashers if needed.


{ WARNING


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


Vehicle Care


10-87


{ WARNING


{ WARNING


Using a match near a battery can cause battery gas to explode. People have been hurt doing this, and some have been blinded. Use a flashlight if you need more light. Be sure the battery has enough water. You do not need to add water to the battery installed in your new vehicle. But if a battery has filler caps, be sure the right amount of fluid is there. If it is low, add water to take care of that first. If you don't, explosive gas could be present. Battery fluid contains acid that can burn you. Do not get it on you. If you accidentally get it in your eyes or on your skin, flush the place with water and get medical help immediately.


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


5. Connect one end of the red


positive (+) cable to the jump start positive (+) post (A). Use a remote positive (+) terminal if the vehicle has one.


Buick LaCrosse Owner Manual - 2011


Black plate (88,1)


10-88


Vehicle Care


6. Do not let the other end


of the red positive (+) cable touch metal. Connect it to the positive (+) terminal of the good battery (B). Use a remote positive (+) terminal if the vehicle has one.


7. Connect one end of the


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


8. Connect the other end of the black negative (–) cable to an unpainted heavy metal engine part (D) away from the dead battery, but not near engine parts that move.


9. Start the engine in the vehicle with the good battery and run the engine at idle speed for at least four minutes.


10. Try to start the vehicle that


had the dead battery. If it will not start after a few tries, it probably needs service. Notice: If the jumper cables are connected or removed in the wrong order, electrical shorting may occur and damage the vehicle. The repairs would not be covered by the vehicle warranty. Always connect and remove the jumper cables in the correct order, making sure that the cables do not touch each other or other metal.


Jumper Cable Removal


A. Heavy, Unpainted Metal Engine


Part or Remote Negative (–) Terminal


B. Good Battery or Remote Positive (+) and Remote Negative (–) Terminals


C. Dead Battery or Remote


Positive (+) Terminal


Buick LaCrosse Owner Manual - 2011


Black plate (89,1)


To disconnect the jumper cables from both vehicles: 1. Disconnect the black


negative (−) cable from the vehicle that had the dead battery.


2. Disconnect the black


negative (−) cable from the vehicle with the good battery.


3. Disconnect the red positive (+) cable from the vehicle with the good battery.


4. Disconnect the red positive (+)


cable from the other vehicle.


5. Return the caps over the


positive (+) and negative (–) terminals to their original positions.


Towing


Towing the Vehicle Notice: To avoid damage, the disabled vehicle should be towed with all four wheels off the ground. Care must be taken with vehicles that have low ground clearance and/or special equipment. Always flatbed on a car carrier. Consult your dealer or a professional towing service if the disabled vehicle must be towed. See Roadside Assistance Program (U.S. and Canada) on page 13‑8
or Roadside Assistance Program (Mexico) on page 13‑10. To tow the vehicle behind another vehicle for recreational purposes, such as behind a motor home, see “Recreational Vehicle Towing” in this section.


Vehicle Care


10-89


Recreational Vehicle Towing Recreational vehicle towing means towing the vehicle behind another vehicle such as a motor home. The two most common types of recreational vehicle towing are known as dinghy towing and dolly towing. Dinghy towing is towing the vehicle with all four wheels on the ground. Dolly towing is towing the vehicle with two wheels on the ground and two wheels up on a device known as a dolly. Here are some important things to consider before recreational vehicle towing: . What is the towing capacity


of the towing vehicle? Be sure to read the tow vehicle manufacturer's recommendations.


Buick LaCrosse Owner Manual - 2011


Black plate (90,1)


10-90


Vehicle Care


. What is the distance that will be travelled? Some vehicles have restrictions on how far and how long they can tow. Is the proper towing equipment going to be used? See your dealer or trailering professional for additional advice and equipment recommendations. Is the vehicle ready to be towed? Just as preparing the vehicle for a long trip, make sure the vehicle is prepared to be towed.


Dinghy Towing from the Front When dinghy towing, the vehicle should be run at the beginning of each day and at each RV fuel stop for about five minutes. This will ensure proper lubrication of transmission components.


3. Following the manufacturer's


instructions, securely attach the vehicle being towed to the tow vehicle.


4. Turn the ignition to ACC/


ACCESSORY and shift the transmission to N (Neutral).


5. Release the parking brake only after the vehicle being towed is firmly attached to the towing vehicle.


When towing the vehicle for extended periods of time, start the vehicle as often as possible to prevent battery drain. This should be done when the tow vehicle is parked.


Use the following procedure to dinghy tow the vehicle from the front with all four wheels on the ground: 1. Position the vehicle being towed behind the tow vehicle and shift the transmission to P (Park).


2. Turn the engine off and firmly set


the parking brake.


Buick LaCrosse Owner Manual - 2011


Black plate (91,1)


Dinghy Towing from the Rear


Dolly Towing from the Front (Front-Wheel Drive)


2. Drive the front wheels onto the


dolly.


Vehicle Care


10-91


3. Shift the transmission to


P (Park).


4. Firmly set the parking brake. 5. Use an adequate clamping


device designed for towing to ensure that the front wheels are locked into the straight-ahead position.


6. Secure the vehicle to the dolly


following the manufacturer's instructions.


7. Release the parking brake only after the vehicle being towed is firmly attached to the towing vehicle.


8. Turn the ignition to LOCK/OFF.


The vehicle was not designed to be towed from the rear with all four wheels on the ground.


Vehicles with front-wheel drive can be dolly towed from the front. Use the following procedure to dolly tow the vehicle from the front: 1. Attach the dolly to the tow vehicle following the dolly manufacturer's instructions.


Buick LaCrosse Owner Manual - 2011


Black plate (92,1)


10-92


Vehicle Care


Dolly Towing from the Front (All-Wheel Drive)


Dolly Towing from the Rear


Appearance Care


Vehicles with all-wheel drive cannot be dolly towed.


The vehicle cannot be dolly towed from the rear.


Exterior Care


Cleaning Exterior Lamps/Lenses Use only lukewarm or cold water, a soft cloth, and a car washing soap to clean exterior lamps and lenses. Follow instructions under “Washing the Vehicle” later in this section. Finish Care Occasional waxing or mild polishing of the vehicle by hand may be necessary to remove residue from the paint finish. Approved cleaning products can be obtained from your dealer.


Buick LaCrosse Owner Manual - 2011


Black plate (93,1)


If the vehicle has a basecoat/ clearcoat paint finish, the clearcoat gives more depth and gloss to the colored basecoat. Always use waxes and polishes that are non-abrasive and made for a basecoat/clearcoat paint finish. Notice: Machine compounding or aggressive polishing on a basecoat/clearcoat paint finish may damage it. Use only non-abrasive waxes and polishes that are made for a basecoat/ clearcoat paint finish on the vehicle.


Foreign materials such as calcium chloride and other salts, ice melting agents, road oil and tar, tree sap, bird droppings, chemicals from industrial chimneys, etc., can damage the vehicle's finish if they remain on painted surfaces. Wash the vehicle as soon as possible. If necessary, use non-abrasive cleaners that are marked safe for painted surfaces to remove foreign matter. Exterior painted surfaces are subject to aging, weather, and chemical fallout that can take their toll over a period of years. To keep the paint finish looking new, keep the vehicle garaged or covered whenever possible.


Vehicle Care


10-93


Protecting Exterior Bright Metal Parts Bright metal parts should be cleaned regularly to keep their luster. Wash with water or use chrome polish on chrome or stainless steel trim, if necessary. Use special care with aluminum trim. To avoid damaging protective trim, never use auto or chrome polish, steam, or caustic soap to clean aluminum. A coating of wax, rubbed to high polish, is recommended for all bright metal parts.


Buick LaCrosse Owner Manual - 2011


Black plate (94,1)


10-94


Vehicle Care


Washing the Vehicle To preserve the vehicle's finish, keep it clean by washing it often. Do not wash the vehicle in direct sunlight and use a car washing soap. Notice: Do not use cleaning agents that are petroleum based or that contain acid or abrasives, as they can damage the paint, metal, or plastic on the vehicle. Approved cleaning products can be obtained from your dealer. Follow all manufacturer directions regarding correct product usage, necessary safety precautions, and appropriate disposal of any vehicle care product. Certain cleaners contain chemicals that can damage the emblems or nameplates on the vehicle. Check the cleaning


product label. If it states that it should not be used on plastic parts, do not use it on the vehicle or damage may occur and it would not be covered by the warranty. Rinse the vehicle well, before washing and after, to remove all cleaning agents completely. If they are allowed to dry on the surface, they could stain. Dry the finish with a soft, clean chamois or an all-cotton towel to avoid surface scratches and water spotting. High pressure car washes could cause water to enter the vehicle. Avoid using high pressure washes closer than 30 cm (12 in) to the surface of the vehicle. Use of power washers exceeding 8,274 kPa (1,200 psi) can result in damage or removal of paint and decals.


Notice: Conveyor systems on some automatic car washes could damage the vehicle. There may not be enough clearance for the undercarriage. Check with the car wash manager before using the automatic car wash. Weatherstrips Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth. During very cold, damp weather frequent application may be required. See Recommended Fluids and Lubricants on page 11‑7.


Buick LaCrosse Owner Manual - 2011


Black plate (95,1)


Wheels and Trim — Aluminum or Chrome The vehicle may have either aluminum or chrome-plated wheels. Keep the wheels clean using a soft, clean cloth with mild soap and water. Rinse with clean water. After rinsing thoroughly, dry with a soft, clean towel. A wax may then be applied. Notice: Chrome wheels and other chrome trim may be damaged if the vehicle is not washed after driving on roads that have been sprayed with magnesium, calcium or sodium chloride. These chlorides are used on roads for conditions such as ice and dust. Always wash the chrome with soap and water after exposure. Notice: Do not use strong soaps, chemicals, abrasive polishes, cleaners, brushes, or cleaners that contain acid on aluminum or chrome-plated wheels, because the surface could be damaged.


The repairs would not be covered by the vehicle warranty. Use only approved cleaners on aluminum or chrome-plated wheels. Notice: Never drive a vehicle that has aluminum or chrome-plated wheels through an automatic car wash that uses silicone carbide tire cleaning brushes, as this could cause damage. The repairs would not be covered by the vehicle warranty. Notice: Driving the vehicle through an automatic car wash that has silicone carbide tire cleaning brushes, could damage the aluminum or chrome-plated wheels. The repairs would not be covered by the vehicle warranty. Never drive a vehicle that has aluminum or chrome-plated wheels through an automatic car wash that uses silicone carbide tire cleaning brushes.


Vehicle Care


10-95


Windshield and Wiper Blades Clean the outside of the windshield with glass cleaner. Clean the rubber blades using a lint‐free cloth or paper towel soaked with windshield washer fluid or a mild detergent. Wash the windshield thoroughly when cleaning the blades. Bugs, road grime, sap, and a buildup of vehicle wash/wax treatments may cause wiper streaking. Replace the wiper blades if they are worn or damaged. Wipers can be damaged by: . Extreme dusty conditions . Sand and salt . Heat and sun . Snow and ice, without proper


removal


Buick LaCrosse Owner Manual - 2011


Black plate (96,1)


10-96


Vehicle Care


Tires Use a stiff brush with tire cleaner to clean the tires. Notice: Using petroleum-based tire dressing products on the vehicle may damage the paint finish and/or tires. When applying a tire dressing, always wipe off any overspray from all painted surfaces on the vehicle. Sheet Metal Damage If the vehicle is damaged and requires sheet metal repair or replacement, make sure the body repair shop applies anti-corrosion material to parts repaired or replaced to restore corrosion protection. Original manufacturer replacement parts will provide the corrosion protection while maintaining the vehicle warranty.


Finish Damage Any stone chips, fractures, or deep scratches in the finish should be repaired right away. Bare metal will corrode quickly and may develop into major repair expense. Minor chips and scratches can be repaired with touch-up materials available from your dealer. Larger areas of finish damage can be corrected in your dealer's body and paint shop. Underbody Maintenance Chemicals used for ice and snow removal and dust control can collect on the underbody. If these are not removed, corrosion and rust can develop on the underbody parts such as fuel lines, frame, floor pan, and exhaust system even though they have corrosion protection.


At least every spring, flush these

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