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 […]
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 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 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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 Dashboard
Update – Midtronics DCA-8000 Diagnostic Charger is the Only Accepted Battery Tester for Warranty Battery Replacement (U.S.)
Rear Leaf Spring Noise and Possible Fuel Contamination
2027 Bolt State of Charge and NACS Charging Tips
Fuse F17UA and Possible No Start Condition
Inoperative PTO on Silverado Medium-Duty TrucksDCA-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
The new 1.2L engine (RPO LBP), introduced in the 2025 Envista, Encore GX, Trax and Trailblazer, features E85 compatibility. As part of the updates to the Evaporative Emission (EVAP) system, […]
With the MDI Manager application software, the MDI 2 can be configured to communicate with a PC using several possible networks, such as a USB cable, ethernet cable, Wireless Local […]
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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