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 […]

August 6, 2026 —

2026 Technician Survey Asks for Your Feedback

GM and several other automotive manufacturers are sponsoring a survey for technicians across the United States. All technicians at GM dealerships are encouraged to participate. (Fig. 1) Fig. 1 The industry-wide survey is designed to understand […]

July 31, 2026 —

New Belt Drive Rack and Pinion Steering Power Pack Replacement

The belt driven electronic power steering system on the 2020-2026 Silverado 1500 and Sierra 1500 features a belt drive and ball nut mechanism, power pack, torque sensor and a rack […]

July 31, 2026 —

Unable to Learn Tire Pressure Monitor Sensors

The tire pressure warning lamp may be illuminated and the tire pressure learn for one or both front tires may not be able to be completed on some 2025-2026 Equinox […]

July 31, 2026 —

1.3L Engine Coolant Control Valve Failure

Some 2020-2025 Encore GX and 2021-2026 Trailblazer models equipped with the 1.3L engine (RPO L3T) may have an illuminated Check Engine MIL and DTCs P3075 (Engine Coolant Flow Too Low) […]

July 31, 2026 —

Fuel Injection Pump Installation and Diesel Engine Timing

An engine no start condition may occur or low fuel pressure DTCs may set after replacing the fuel injection pump on some 2019-2026 Silverado 1500, Sierra 1500; and 2021-2026 Tahoe, […]

July 31, 2026 —

High Resistance on Grounds G103A, G103B

Some 2024-2026 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks may have several communication issues and CAN Bus errors as well as multiple illuminated warning MILs and messages on the Driver Information […]

July 31, 2026 —

My Open Cases List View Issue in CX Connect

The latest CX Connect release (July 2026) includes a number of enhancements and updates. However, some CX Connect users may experience an issue after the update was installed where they […]

July 24, 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 —