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 2015-2018 Cadillac Escalade vehicles equipped with a 6.2L L86 (gasoline direct injection) engine. The customer may see an SES light on, possibly accompanied by a rough running engine.
This bulletin applies to 2015-2017 Cadillac Escalade vehicles. Some customers may comment about a temporary loss of electric power steering assist (EPS) followed by a sudden return of EPS assist, particularly during low-speed turning maneuvers. The loss and sudden return of EPS assist typically happens within a 1-second period and is caused by an electrical/software issue.
General Motors announced a recall of certain 2018 GMC Terrain, Acadia and Canyon vehicles built during March 2018.
Owners of 2017 Cadillac FTC-V vehicles equipped with a 6.2L LT4 engine, from VIN H0194673 to H0196684, may comment on a scraping or moan noise heard best when the engine is idling.
This bulletin applies to 2018 Cadillac ATS, CT6 and CTS models equipped with a 2.0L engine. On some vehicles, an electrical connection in the circuit board may fail in the engine control module (ECM). If this occurs, the MIL/Check Engine light may illuminate.
This bulletin applies to 2016 Cadillac SRX vehicles. In “rare instances,” SRX models equipped with a power liftgate may have a condition in which the liftgate support strut may detach from the liftgate if contacted by an external force.
This bulletin applies to 2009-2012 Cadillac CTS-V series vehicles equipped with the Tremec 6-speed manual transmission. Some cases have been found where the clutch hydraulic system was contaminated with water.
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.
Several GM vehicle models may feature two distinctively different-looking per-cylinder valve-cover-mounted ignition coils. This is due to a supplier difference and, according to GM, does not affect performance or serviceability.
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