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 19, 2026 —

Inoperative Engine Cooling Fan

Some 2024-2026 Equinox and Terrain models may exhibit several engine cooling and air conditioning issues, including engine overheating, an inoperative cooling fan and inoperative air conditioning. DTC P0494 (Cooling Fan […]

August 14, 2026 —

Transmission Stuck in 1st Gear

The transmission may get stuck intermittently in 1st gear on some 2024-2026 Traverse, Acadia; and 2025-2026 Enclave models equipped with the 8-speed 8T65 automatic transmission (RPO MF8). If this occurs, […]

August 14, 2026 —

Gear Shift Control Module Contamination

If one of the Gear Shift Control Module buttons (Fig. 6) is stuck on a 2022-2026 Silverado 1500, Sierra 1500 or HUMMER EV, check for any liquid spills that may […]

August 14, 2026 —

New GM Parts Connect Delivers Smarter, Faster Parts Lookup

GM Parts Connect, GM’s next generation web-based parts catalog and ordering platform that launched in early July, has been built to help dealership personnel quickly identify, verify and order the […]

August 14, 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 August seminar (10226.08V – U.S.) takes a look at the GM-53435 Brushless 3-Phase […]

August 14, 2026 —

Lunch with Your FSEs August Meeting

The monthly Lunch with Your Field Service Engineers meeting will take place August 19. Each one-hour meeting is held online via Microsoft Teams and offers GM dealership technicians, shop foremen […]

August 14, 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 —