2018 GMC Sierra 1500 Service and Repair Manual
2018 GMC Sierra 1500 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
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General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a
Unintended activation of the driveline-protection system will cause unintended braking on the wheel
GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began Decemb
General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2019 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 Crew Cab vehicles. The le
A detached end cap or inflator rupture can allow compressed gas to escape and project the end cap or
Dealers will replace the left and right-side RRAB modules, free of charge. Owner notification letter
General Motors LLC (GM) is recalling certain 2015-2017 Cadillac Escalade, 2014-2018 Chevrolet Silverado, GMC Sierra, 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles. The amount of vacuum crea
As the vacuum level drops, the brake assist decreases, increasing braking effort, extending the dist
GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charg
General Motors LLC (GM) is recalling certain 2018 Cadillac Escalade, Chevrolet Silverado 1500 and Tahoe, GMC Sierra 1500 and Yukon vehicles equipped with either a 5.3L or 6.2L V8 engine. The output o
A decrease in brake assist can increase the brake pedal effort and distance required to stop the veh
GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charg
This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This preliminary information communicates an issue with aftermarket LED headlights causing IPC warning messages and MIL along with several low speed lan DTCs.
This PI Communications information on an alternative product dealers can use to perform 19-NA-255: Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting due to issue with getting product from current supplier listed in the bulletin.
This PI communicates the proper part numbers for transmission connectors and internal harness to prevent confusion when ordering
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Showing the 8 most recent of 950 technical service bulletins on file with NHTSA.
The transmission would purge forward when shifting gears. The shifting was very rough. This vehicle had recently been in accident.
The transmission would purge forward when shifting gears. The shifting was very rough. This vehicle had recently been in accident.
The transmission would purge forward when shifting gears. The shifting was very rough. This vehicle had recently been in accident.
Hard changes with transmission like a car has hit you from behind. It has had a hit in the transmission changing gears since 15,000 miles but it has progressively gotten worse and at 67k itâs enough
The contact owns a 2018 GMC SIERRA. The contact stated that while driving at 35 mph, when another vehicle had collided with the contact's vehicle which resulted in the airbags not deploying. The cont
Showing the 5 most serious of 409 complaints filed with NHTSA.
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