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 […]

July 22, 2026 —

Making Associated Accessory Warranty Claims

Associated Accessories, or Integrated Business Partner (IBP) accessories, offer GM customers a variety of automotive accessories to customize their vehicles as well as enhance their functionality. These accessories include Kicker […]

July 21, 2026 —

TAC and TCSC Phone Support to Require CX Connect Case Number

The CX Connect case system (U.S. only), helps the GM Technical Assistance Center (TAC) and the Techline Customer Support Center (TCSC) support technicians with diagnostic repairs in the dealership. From […]

July 21, 2026 —

Vehicle-Wide Programming Update for EVs

Vehicle-Wide Programming (VWP), which allows multiple control modules to be programmed during the same event, is no longer required to be performed on EV models as part of a service […]

July 21, 2026 —

Fuel Pump Power Control Module Internal Short

Some 2021-2022 Encore; 2021-2023 Tahoe, Suburban, Yukon, Envision, Escalade; 2021-2024 Blazer, Equinox, Express, Malibu, Trax, Acadia, Savana, Terrain, XT4, XT5, XT6; 2022-2023 Traverse, Enclave; 2022-2024 Silverado 1500, Sierra 1500; 2023-2024 […]

July 21, 2026 —

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. The July seminar (10226.07V – U.S.) reviews the 3.0L LZ0 diesel engine end […]

July 21, 2026 —

Lunch with Your FSEs July Meeting

The monthly Lunch with Your Field Service Engineers meeting will take place July 15. The one-hour meeting will be held online via Microsoft Teams and offers GM dealership technicians, shop […]

July 9, 2026 —

Guided Diagnostics – The Next Step in a More Focused Repair Path

GM has recently introduced Guided Diagnostics, a VIN-specific diagnostic application designed to help technicians follow a more focused repair path that reduces dead ends and makes troubleshooting more efficient. At […]

June 30, 2026 —

Service Door Latch Message and Child Safety Lock Condition

A Service Door Latch System message may be shown on the Driver Information Center (DIC) of some 2025-2026 Tahoe, Suburban, Yukon and Escalade models. In addition, the rear child door […]

June 30, 2026 —

Aftermarket Lighting, Sensor Obstruction May Cause False Front Park Assist Alerts

The front Park Assist system may issue false alerts on the Driver Information Center on some 2023-2026 Silverado 1500, Sierra 1500; 2024-2026 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks when there […]

June 30, 2026 —

Oil Pan Wiring Harness Diagnostic Tips

Some 2023-2024 Equinox and Terrain models equipped with the 1.5L engine (RPO LSD) (Fig. 13) may have an illuminated Check Engine MIL and DTCs P0521 (Engine Oil Pressure Sensor Performance), […]

June 30, 2026 —

FSE Technician Recognition Awards – 2nd Quarter 2026

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 […]

June 30, 2026 —

Gemini OTA Update for Google built-in

Google Gemini brings AI assistance to 2022-2027 Chevrolet, Buick, GMC and Cadillac models equipped with Google built-in (RPO IVE, IVD, IOK) — approximately four million vehicles in the U.S. are […]

June 18, 2026 —

Information on 4WD Front Axle Disconnect DTCs Updated in SI

New Diagnostic Steps Added for 4WD Front Axle Disconnect DTCs C118D, C10BA, C116F and C119C GM Engineering has identified a previously missing connector interface that requires inspection and circuit verification […]

June 18, 2026 —