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Buick LaCrosse Problems

RepairPal has identified the most common problems with the Buick LaCrosse based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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17
Known Problems

You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be completely flushed.

The high pressure power steering hose will commonly leak fluid; it should be replaced.

Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.

A Loose or worn gas cap may cause Check Engine Light to illuminate.

The steering may develop a clunk type noise from the upper intermediate steering shaft.  Our technicians tell us that you should check with your local GM dealer to find out what the latest repair is for this condition.

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

Replacement of faulty door lock actuator required for proper operation.

 

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.

Contaminated brake fluid can cause problems in the brake system and it should be flushed every 60,000 miles.

The 2005-2009 Buick LaCrosse is known to have issues with the EVAP system, a part of your emission control system.

The EVAP canister vent valve or valve solenoid wiring may fail causing illumination of the check engine light, setting code P0446, and problems filling the tank with fuel.

To correct the issue, the EVAP canister vent valve, solenoid, and wiring must be inspected. The most common fix is replacement of the wiring connector or replacement of the vent valve assembly.

A Loose or worn gas cap may cause Check Engine Light to illuminate.

The high pressure power steering hose will commonly leak fluid; it should be replaced.