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GMC Sierra

GM Power Assist Recall

This bulletin applies to 2014-2018 GMC Sierra 1500 and 2015-2-18 Yukon vehicles. General Motors is recalling certain vehicles because the amount of vacuum created by the vacuum pump may decrease over time.

GMC Rear Hub Nut

Certain 2017-2018 GMC Sierra HD vehicles may have a condition in which the rear wheel hub nut could become loose due to the rear wheel hub nut retainer not being formed properly.

ABS-Related Recall

GM is recalling certain 2015-2020 GMC Yukon vehicles equipped with a 5.3L engine, a 3.08-ratio rear axle and four-wheel-drive. If a wheel speed sensor fails, while the vehicle is travelling between 41 mph and 60 mph in four-wheel or automatic mod, the EBCM (electronic brake control module) software may activate the driveline protection system.

Fuel Pump Concern

This bulletin applies to 2014-2019 GMC Sierra and 2015-2019 Yukon vehicles. A vehicle may have a concern with an SES lamp on and a rich condition DTC P0172 and P0175.

Cat Replacement Caution

This bulletin applies to 2002-2018 Chevy Escalade, Avalanche, Express, Silverado, Tahoe and Suburban models, Cadillac Escalade, Hummer H and GMC Savana, Sierra and Yukon models.

Modifications Can Cause Codes

Some owners of 2007-2019 Chevy Avalanche, Silverado, Suburban or Tahoe vehicles, GMC Sierra and Yukon vehicles and Cadillac Escalades may comment on unwanted Stability Activation and/or a Service Stability message.

Trans Relearn

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.

Trans Trauma

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.