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 […]
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, […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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) […]
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, […]
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 […]
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 […]
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 […]
Inoperative Engine Cooling Fan
Transmission Stuck in 1st Gear
Gear Shift Control Module Contamination
New GM Parts Connect Delivers Smarter, Faster Parts Lookup
GM Service Know-How Emerging Issues
Guided Diagnostics – The Next Step in a More Focused Repair Path
Service Door Latch Message and Child Safety Lock Condition
Aftermarket Lighting, Sensor Obstruction May Cause False Front Park Assist Alerts
Oil Pan Wiring Harness Diagnostic Tips
FSE Technician Recognition Awards – 2nd Quarter 2026
Gemini OTA Update for Google built-in
Information on 4WD Front Axle Disconnect DTCs Updated in SI
Unable to Learn Trailer TPM Sensors
New 2026 Model Year Transmission Fluid Capacities Chart
GM Service Know-How Emerging Issues
Introducing GM Parts Connect
Latest Techline Connect Update Adds Proactive Alert for Parasitic Drains to DashboardDCA-8000
Troubleshooting
Guide
TAC Newsletter April 2026
TAC Newsletter March 2026
MDI-2 Connections and Advanced Setup 2026
CX Connect Case Creation Help + Tips and Tricks
GM has recently established a new air conditioning refrigerant leak diagnostic procedure for GM EVs and PHEVs — including the Silverado EV, Blazer EV, Equinox EV, Bolt EV/EUV, Corvette E-Ray, […]
The latest update to GDS 2 in Techline Connect provides technicians with the ability to build personalized data parameter lists tailored for specific diagnostic sessions — identifying only the data […]
Take a detailed look at a wide range of innovative features and advanced systems found on GM vehicles to gain a better understanding of proper operation. Each short video reviews how a feature works, highlights operating tips and shows ways to customize settings, if applicable.
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