If diagnosis points to the need to replace a failed external tailgate release switch on 2019-2022 Sierra 1500, Sierra 2500/3500; Silverado 1500 and Silverado 2500/3500 models, including models equipped with […]
When replacing a collapsed lifter and/or a lifter that has come apart due to an internal lifter issue on 2020-2021 Silverado 1500, Sierra 1500; 2021 Tahoe, Suburban, Yukon and Escalade […]
There may be several power seat adjustment conditions found on some 2020-2021 Corvette, CT4, CT5; 2021 Envision, Escalade, Tahoe, Suburban and Yukon models. The seat adjustment conditions may include: The […]
The Chevrolet Multi-Flex tailgate and GMC MultiPro tailgate (RPO QK2) available on the 2022 Silverado 1500, Silverado 2500/3500, Sierra 1500 and Sierra 2500/3500 offers flexibility and functionality designed to improve […]
Some 2016-2020 Camaro models (Fig. 7) equipped with the 8-speed automatic transmission (RPO M5T, M5U) or 10-speed automatic transmission (RPO MF6, MGL, MI1, MI2, MI4) may have a Shift to […]
The Chevrolet Complete Care program (U.S.) has been updated recently to include an extension of the Included Maintenance timing requirements for the owners of 2020-2022 Corvette models (C8) (Fig. 11) […]
If an engine ticking or knocking sound is noticed on some 2019-2022 Silverado, Sierra; 2021-2022 Tahoe, Suburban, Yukon and Escalade models equipped with the 5.3L V8 engine (RPO L84) (Fig. […]
A new torque specification has been released for ACDelco spin-on oil filters installed on 2000-2022 GM models equipped with a gasoline engine. The new specification is in response to possible […]
A wrinkle or bubble may be seen in the stripe decal or hood wrap around the outer edges of the hood air scoop on some 2019-2022 Camaro models. (Fig. 17) […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM certified repairs. The latest service topics from GM Brand Quality and Engineering covered in […]
The new 2022 GM Service Technical College (STC) Course Catalog (U.S.) (Fig. 1) is now available on the Service Technician Training, Recruiting, Retention, and Recognition App on GlobalConnect and on […]
The air conditioning may blow warm air on some 2021-2022 Tahoe, Suburban, Yukon and Escalade models. The Check Engine MIL may be illuminated and DTCs B1AA3 (Run/Crank Relay Coil Control), […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM certified repairs. The latest service topics from GM Brand Quality and Engineering covered in […]
GM’s global repair strategy for large wiring harnesses (body, engine, instrument panel, forward lamp, headliner/roof harness, and truck chassis) is to repair/replace the components (cables, terminals, connectors, etc.) instead of […]
Check 55-Way Connector if Glow Plug DTCs are Set
Setting Up Wired and Wireless MDI 2 Connections
MDI 2 Advanced Setup Technical Tips Update
April Service Newsletter from the Experts at GM TAC
Proper Use and Diagnostic Tips for NFC Key Cards
Camshaft Position Sensor Performance Diagnosis
Tick Sound at Idle on V8 Engines
March Service Newsletter from the Experts at GM TAC
CCND Labor Codes Updated for Infotainment Audio and Screen Conditions
FSE Technician Recognition Awards – 1st Quarter 2026
Radiator Inlet Hose Coolant Leak
Sending GDS 2 Session Logs to TAC Using CX Connect
Key Fob Synchronization Update
CT5-V Blackwing Precision Package Features High-Performance Cup Tires with Unique AppearanceDCA-8000
Troubleshooting
Guide
TAC Newsletter April 2026
TAC Newsletter March 2026
Techline Connect Tips November 2024
CX Connect Case Creation Help + Tips and Tricks
Safety Arc-Rated (AR) Personal Protection Equipment (PPE) is recommended to be used by technicians when servicing some high-voltage battery packs under certain scenarios on GM electric vehicles. The PPE that […]
The latest update to the MDI 2 Manager in Techline Connect (version 9.1.2752.177) includes support for new MDI 2 wireless dongles. The new wireless dongles are similar to the previously […]
Take a detailed look at a wide range of innovative features and advanced systems found on GM vehicles to gain a better understanding of proper operation. Each short video reviews how a feature works, highlights operating tips and shows ways to customize settings, if applicable.
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