Some owners of 2010 Buick Enclave vehicles may complain about inoperative low-beam headlamps. According to GM, do not replace the headlamp assembly. Replace the bulb and inspect the connector as follows:
Owners of 2010-2014 Buick LaCrosse and 2014 Regal GS AWD models may comment on a squeak or chirp noise from the rear of the vehicle, noticeable at low speeds with the window open. This is likely a squeak at the axle-to-seal interface due to a lack of lubrication.
Owners of 2011-2012 Buick Regal models (equipped with variable assist power steering) may complain that the steering wheel is difficult to turn at low speeds. The cause may be a variable effort power steering solenoid valve connector that was installed backward/reversed at the rack and pinion connector on the frame.
Some owners of 2008 Buick Allure, LaCrosse and Lucerne vehicles equipped with the 3800 engine (VIN Code 2) may comment that the SES light is on.
Some owners of 2008-2013 Buick Enclave AWD vehicles may comment that while switching lanes at highway speeds, there is a slight rear-end sway feel, sometimes described as feeling like driving in a cross-wind.
This bulletin applies to 2010-2013 Buick Regal models, in addition to a number of 2009-2013 GM vehicles. The vehicle may experience a power steering noise/whine or fluid leak from the power steering pump, gear or high pressure side power steering hose during extreme low outdoor temperatures.
This bulletin applies to 2013 Buick Encore FWD vehicles only. A customer may comment that the fuel gauge is operational but will not go past 7/8 full after filling the gas tank. Upon diagnosis, no codes will be found in current or history and the scan tool data matches the ECM data for the fuel level.
Some 2012 and prior GM passenger cars and light trucks equipped with a 4L60-E, 4L65-E or 4-L70-E automatic transmission may exhibit a clunk noise that can be heard on a 2-3 upshift or a 3-2 downshift.
Owners of some 2010-2012 Buick LaCrosse vehicles may comment that intermittently the key will not insert fully or rotate in the door or ignition lock cylinder. With repeated attempts and additional force, the key will insert and will operate the lock/cylinder.
Some customers may comment on a fluid leak under the front of the GM vehicle. The technician may find fluid leaking from the power steering system.
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