2009 Buick LaCrosse Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2009 Buick LaCrosse

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2009 Buick LaCrosse Problems

Door lock mechanism not operating properly

Door lock mechanisms not operating properly. Doors may not lock/unlock.

Replacement of faulty door lock actuator required for proper operation.


The Check Engine Light With Code: P0011, P0014, P0021, P0024, P0341, P0346, P0336, and/or P0391

Vehicles with certain V6 engines may illuminate the Check Engine Light one or more of the following codes: P0011, P0014, P0021, P0024, P0341, P0346, P0336, or P0391. Our technicians tell us that some vehicles may require a powertrain control module (PCM) software update to correct this issue. Other vehicles may have excess camshaft end play on one or both cylinder heads which will need to be corrected using special procedures outlined by GM.

Rear wheel bearings

At 33000 miles still under warrenty the right rear wheel bearing failed, On our 2012 Buick Lacrosse again at 70000 the left rear wheel bearing failed costing over $400.00 to repair we have owned many vechicles and this is a first to have both wheel bearings fail. Anyone else have this problem. ?????

Well it happening again, now the right rear wheel bearing that failed at 33000 miles has failed again. All our papers say it has a life time ...

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2009 Buick LaCrosse Questions

what size socket do I need to change the oil (2 answers)

what size socket do I need to change the oil

why would the speed decrease light come on and the engine light also and the car (1 answer)

at the same time the traction system light and the car slows down.

Where can I get The ECM repaired or replaced. (1 answer)

The ECM in my car is setting multiple error codes (5) at the same time (I took the car to a repair shop and they tested it while driving the car). The repair shop indicated that this didn't seem correct and thought that the ECM itself was the problem. My check engine light started coming on ...

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2009 Buick LaCrosse Recalls

Headlights & Daytime Running Lights

These vehicles are being recalled because the headlamp driver module (HDM) can overheat and fail. This will cause the headlights and daytime running lights to stop working. Loss of this lighting will affect the ability of the driver to see the road and reduce the vehicle's visibility to oncoming vehicles, both of which increase the risk of a vehicle crash. The remedy for this problem is still under development and not yet available.

Ignition Lock Cylinder Concern

Excess weight on the key ring can cause the ignition switch to move out of the run position without warning, turning off the engine. This defect can also affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. Dealers will install two 13mm key rings and key insert into the vehicle's ignition keys to correct this concern.

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2009 Buick LaCrosse Reviews

based on 2 customer reviews
2009 LaCrose CXL, car rides like a dream - but the power lock on passenger front and rear door doesn't work half the time. Check engine light and traction control light comes on at least once a week. The problem as near as I can tell is the accelerator pedal sensors. As I understand it there are two sensors that must be 100 percent in unison while reading how much the pedal is depressed. Wh...
My last 3 Cars have been Buick's. The LaCrosse is the Best.

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