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 2017-2019 GMC Canyon trucks equipped with a 3.6L engine. Some customers may comment that the SES lamp is on or the engine may have a slight noise coming from the front of the engine belt area. Upon investigation, you may find DTC P0324 set in the ECM.
General Motors announced a recall of certain 2018 GMC Terrain, Acadia and Canyon vehicles built during March 2018.
This bulletin applies to 2015-2018 GMC Yukon vehicles equipped with a 5.3L or 6.2L engine, and 2019 Savana vehicles equipped with a 4.3L engine. Some customers may comment about an underhood fuel odor and/or starting the engine sometimes requires extended cranking time.
This bulletin involves 2010-2016 GMC Acadia and 2017 GMC Acadia Limited vehicles. Some customers may comment that there is a clunk/thump noise on acceleration once after each key cycle that may be mistaken as coming from the suspension or engine compartment.
This bulletin applies to 2015 GMC Yukon and Sierra vehicles. Customers may comment about firm 1-2 upshifts, firm 3-1 downshifts, engine rpm flare on tip-in and the MIL on. The technician may find DTCs P0606, P16F3 or P2818 set as current or history.
This bulletin applies to 2010 – 2017 Chevy Equinox and GMC Terrain vehicles. Any combination of the following DTCs may be present:
Certain 2017 GMC Sierra, Yukon and Yukon XL vehicles equipped with an 8-speed automatic transmission may have a condition where a false failure action is being taken when it is not required. This condition can result in the transmission holding the last known safe gear for 6 seconds.
This bulletin applies to 2017 – 2018 GMC Sierra, 2019 Sierra Limited and 2017-2019 Yukon vehicles. Some customers may comment on a noise described as a tick, spark, knock, detonation or exhaust. The cause may be that the steering shaft seal (intermediate shaft seal) was incorrectly installed.
This bulletin applies to 2007-2017 GMC Acadia vehicles. In some cases, the ABS Service Traction Control System, and/or Service StabiliTrak telltale lights may be on. During initial scan for EBCM module diagnostic codes, you may find one or more of the following DTCs: C0035-C0050 with specific symptom bytes 18, 5A or 0F.
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