The infotainment system (RPO IVD, IVE) on some 2023-2026 LYRIQ, Colorado; 2024-2026 XT4, Blazer EV, Equinox EV, Silverado EV, Traverse, Acadia; 2025-2026 Enclave, Envision, CELESTIQ, CT5, Escalade, ESCALADE IQ, OPTIQ, […]
Some GM App Store applications that have been downloaded to 2016-2017 ATS; 2017 XTS, Camaro, Volt; 2017-2018 CTS, Malibu; 2017-2019 Verano, XT5, Cruze, Acadia; 2017-2020 Regal, Colorado, Corvette, Impala; 2017-2021 […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the October GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
When replacing an engine on 2026 and prior GM passenger cars and trucks due to internal damage, extreme care should be taken when transferring the intake manifold to the new […]
The 2022-2026 HUMMER EV Pickup and 2024-2026 HUMMER EV SUV offer the available Infinity Roof (RPO CC3) with four removable, transparent modular Sky Panels and a detachable front I-Bar. (Fig. […]
The 5.5L flat-plane crank V8 engine that powers the 2023-2026 Corvette Z06 generates 670 horsepower. Add the twin turbos on the 2025-2026 Corvette ZR1 and the engine produces 1,064 horsepower […]
New high-voltage battery packs for 2022-2026 HUMMER EVs, BrightDrop EVs; 2024-2026 Silverado EV, Sierra EV; and 2025-2026 ESCALADE IQ models are now shipped to the dealership without the rear ground […]
Water may be found on the front passenger floor of some 2024-2026 Equinox EV and 2025 OPTIQ models. The water leak may be caused by an unseated A/C drain tube […]
A hesitation or misfire sensation may be felt in some upfitted 2023-2025 Express and Savana vehicles when passing below high-voltage power lines. The following DTCs may be set in the […]
TAC resolutions are now available in the CX Connect knowledge hub. Here’s how to access and search the resolutions database. Accessing TAC Resolutions To access dealer resolutions, navigate to the […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar reviews 10L80 transmission valve body repair. (Fig. 14) […]
The sunroof may not be operating properly and/or the sunroof air deflector may not be functioning properly on some 2017-2023 Acadia (Fig. 1); 2018-2023 Enclave, Traverse; and 2024 Enclave and […]
A humming or buzzing sound may be heard coming from the front of some 2025 Tahoe, Suburban, Yukon and Escalade models. (Fig. 4) The sound may be the headlamp mounting […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the September GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
November Service Newsletter from the Experts at GM TAC
Questions About Labor Times?
Stay Updated — IOK Radio Software and Connection Conditions
Key Fob Synchronization
Tips on Identifying Diesel Fuel Contamination
Midtronics Diagnostic Charger DCA-8000P Announced as Essential Tool
Accessing Air Ride Adaptive Suspension Data
Aftermarket Exhaust System Conditions
Lower Case Extension and Oil Pan ComparisonDCA-8000
Troubleshooting
Guide
TAC Newsletter December 2025
TAC Newsletter November 2025
Techline Connect Tips November 2024
CX Connect Case Creation Help + Tips and Tricks
All buttons on one key fob (Remote Keyless Entry transmitter) may be inoperative on some 2023-2026 Escalade, LYRIQ, Corvette, Silverado 1500, Silverado 2500HD/3500HD, Tahoe, Suburban, Sierra 1500, Sierra 2500HD/3500HD, Yukon; […]
To avoid wait times for technical support in the dealership, prior to contacting the GM Technical Assistance Center (TAC) and Techline Customer Support Center (TCSC) as well as and other […]
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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