TechLink

TCSC Top Issues This Week

The Techline Customer Support Center (TCSC) is available to help dealerships with diagnostic and programming issues related to Techline Connect (TLC) and the Service Programming System (SPS). TCSC has now […]

December 3, 2025 —

November Service Newsletter from the Experts at GM TAC

The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the November GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]

November 30, 2025 —

Questions About Labor Times?
Answers to the Latest FAQs in Service Information

The Labor Time Group is responsible for warranty repair time studies, accessories and Pre-Delivery Inspections (PDI). Labor time studies are completed for new vehicles as well as new service procedures […]

November 26, 2025 —

Stay Updated — IOK Radio Software and Connection Conditions

There may be several audio system conditions on some 2022-2024 Tahoe, Suburban, Yukon; 2022-2025 HUMMER EV; 2022-2026 Silverado 1500, Sierra 1500; 2023 BrightDrop; 2024-2025 Corvette; 2024-2026 Silverado 2500HD/3500HD and Sierra […]

November 26, 2025 —

Key Fob Synchronization

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; […]

November 26, 2025 —

CX Connect Features Updated in Latest Release

The latest CX Connect release includes a number of enhancements and updates that are designed to increase the functionality of the app and make it easier to use. VIN […]

November 19, 2025 —

New SAVI Manager Release Updates USB Driver

The new SAVI Manager v2.29.0 release provides an update to address USB driver failure. The latest release will correct the issue of the Quectal driver failing to install by automatically […]

November 19, 2025 —

Do Not Swap Control Modules

GM diagnostic strategy does not support the practice of swapping control modules during the course of diagnosis or to expedite a repair. Features in today’s vehicles are increasingly software configurable. […]

November 19, 2025 —

GM Service Know-How Emerging Issues

The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar uses the new GE-60503 Thermal Imaging Camera for leak […]

November 19, 2025 —

DCT Transmission Auxiliary Pump Cavitation

Some 2024-2026 Corvette E-Ray models may have a Service Transmission message displayed on the Driver Information Center along with an illuminated Check Engine MIL. DTCs P1955 (Transmission Fluid Pressure Relief […]

October 30, 2025 —

Media Source Randomly Switching to Paired Device

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, […]

October 30, 2025 —

Expiration of Apps from GM App Store

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 […]

October 30, 2025 —

October Service Newsletter from the Experts at GM TAC

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 […]

October 30, 2025 —

Beware of Debris When Transferring the Intake Manifold During Replacement Engine Installation

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 […]

October 28, 2025 —

HUMMER EV Sky Panel Adjustment Tips

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. […]

October 28, 2025 —

Corvette Z06, ZR1 5.5L V8 Engine Restriction

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 […]

October 28, 2025 —

High-Voltage Battery Pack Rear Ground Strap Bracket

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 […]

October 28, 2025 —