General Motors advises inspection for piston damage when the MIL is on and the engine misfires and displays a ticking/knocking noise. This may be caused by an aftermarket ECM calibration/component and detonation that leads to melted pistons.
This bulletin applies to 2018 Buick Enclave, 2017-2018 LaCrosse and 2018 Regal vehicles. Some customers may comment that the MIL is on. The technician may find DTC P0459 (evaporative emission purge solenoid valve control circuit high voltage) set in the ECM as active or history.
This bulletin applies to 2016-2017 Buick Cascada vehicles. Some customers may comment that when parking and turning off the vehicle, the radio continues to play after the driver door is opened. Technicians may find DTCs U1530 or U1534.
Certain 2017 model year Buick LaCrosse vehicles may have been built with an unnecessary gasket in the high pressure fuel pump assembly. The fuel pump may wear out early and this could lead to degradation of engine performance over time.
This bulletin applies to 2010-2013 Buick LaCrosse and Enclave vehicles. A customer may comment that the charging system light is illuminated and/or the service battery charging system message is displayed.
This bulletin applies to 2014-2015 Buick Regal, LaCrosse and Verano vehicles equipped with non-variable ratio electric power steering. Some customers may comment on a sticky or notchy feeling in the steering wheel, near the center position, after a duration of time on the highway while making lane changes.
This bulletin applies to a number of GM products including 2013-2015 Cadillac ATS/2012-2015 SRX, 2012-2017 Buick LaCrosse/Regal/Verano, 2012-2017 Chevy Caprice, 2016-2018 Captiva/ 2011-2017 Equinox/2012-2018 Impala and 2011-2017 GMC Terrain.
This bulletin applies to 2010-2017 Buick LaCrosse vehicles. The MIL may be on. In rare cases, customers may also comment that there is no PRNDL display. When checking for DTCs, technicians may find DTC P182E (internal mode switch indicates invalid range) set as active or history in the TCM (transmission control module).
Owners of 2008-2012 Buick Enclave vehicles may comment about a squeak or rattle noise from the steering column area.
A “small number” of ignition and start switch housings are involved in a recall involving 2010-2013 Chevy Equinox, 2013 Buick Encore, 2011 Buick Regal, 2013-2014 Buick Verano, 2011-2016 Chevy Cruze, 2013-2015 Chevy Malibu and 2011-2013 GMC Terrain models. The ignition system may contain a damaged electronic park lock lever that could fail to prevent the ignition key to be removed when the transmission is in a position other than park.
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