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 […]

January 7, 2026 —

Engine Control Module Diagnosis and ECM Part Restriction

The E01 Engine Control Module (ECM) for 2022-2026 CT4, CT5, Silverado, Sierra; 2023-2025 Envision; 2023-2026 Colorado, Canyon; and 2024-2025 XT4 models equipped with the 2.0L engine (RPO LSY) or 2.7L […]

December 23, 2025 —

Front Brake Caliper Sound and Uneven Pad Wear

There may be a squeal or tick (rotational type noise) heard coming from the front brake calipers when the brakes are not applied on some 2023-2026 Colorado and Canyon trucks. […]

December 23, 2025 —

3rd-Row Seat Switch Diagnosis

Some 2025-2026 ESCALADE IQ models may have a 3rd-row seat that cannot be operated using the 3rd-row seat switches in the cargo area. (Fig. 10) Fig. 10 If […]

December 23, 2025 —

Check Ground Terminals for Transmission Fluid Temperature Sensor Circuit Condition

Some 2024-2026 Chevrolet 5500 HG/5500 XG Low Cab Forward (LCF) models equipped with the 6.6L V8 engine (RPO L8T) and 6-speed Allison automatic transmission (RPO MW7) may have several DTCs […]

December 23, 2025 —

December 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 December GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]

December 23, 2025 —

FSE Technician Recognition Awards – 4th Quarter 2025

The GM Field Service Engineer (FSE) Technician Recognition Awards (U.S.) celebrate the skill and dedication of dealership technicians who have recently worked with FSEs on challenging repairs. Technicians at GM […]

December 23, 2025 —

Enroll Today in the 2026 Technician Excellence Program

Designed to recognize and reward dealership technicians for their technical training achievements, the Technician Excellence Program (U.S.) has kicked off enrollment for the 2026 program year. Enrollment takes place through […]

December 16, 2025 —

Verify Vehicle Settings After Rocker Panel Ground Lamps Installation

The GM Accessory Rocker Panel Molding Ground Lamps (PN 85155377) may not illuminate after installation on some 2024-2026 Silverado EV and Sierra EV models. (Fig. 3) Fig. 3 The exterior […]

December 16, 2025 —

Heated Steering Wheel Replacement

Before replacing the heated steering wheel on some 2021-2022 CT4, CT5; 2022 Enclave, XT5, XT6, Blazer, Silverado 1500 LTD, Silverado 2500HD/3500HD, Tahoe, Suburban, Traverse, Acadia, Sierra 1500 Limited, Sierra 2500HD/3500HD, […]

December 16, 2025 —

Door Panel Wood Trim Condition

Some 2022-2025 Silverado 1500, Sierra 1500; 2024-2025 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks may have a bubbling or delaminating condition on the wood trim of the door panel. (Fig. 10) […]

December 16, 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 takes a look at how to correct outside door […]

December 16, 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 —