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.
This bulletin applies to 2012-2013 Buick Regal and Lacrosse vehicles with eAssist. A hum or buzz noise may be heard from the right front service brake when driving straight or when turning, along with a Service Brake Assist message displayed, and DTCs C027B or C0040.
This bulletin applies to 2012-2013 Buick Regal models equipped with eAssist. A buzz or hum may be heard in the right front, possibly when turning or driving straight. The ABS MIL may be on or Service Brake Assist message may be displayed. DTCs C027B or C0040 may be stored.
Some 2008-2009 Buck LaCrosse, Buick Allure and Chevy Impala vehicles may exhibit an inaccurate fuel gauge and/or DTC P0461.
Customers may complain of a SES light, misfire, DTC P0300, and/or a chirp, squeak, squeal or tick noise -- which may mean a potential valvetrain concern.
This bulletin applies to a handful of GM models including 2013-1014 Buick Encore, 2009-2011 Chevy Aveo, 2011-2014 Chevy Cruze, 2012-2014 Chevy Sonic and 2013-2014 Chevy Trax, all equipped with a four-cylinder engine.
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