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 […]
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 […]
If the engine for a GM model needs to be replaced with a new engine or has to be overhauled, be sure to perform the Engine Prelubing procedure as part […]
The new GM Service Technical College (STC) Program Guide (formally the GM STC Course Catalog) is now available on gmstc.com. The new guide has been restructured as a website to […]
Returning parts to the Warranty Parts Center (WPC) helps GM engineers, suppliers and others quality management personnel better understand and quickly resolve product issues. Technicians can help in identifying an […]
The GM Service Information (SI) provides the latest, most complete information available to diagnose and repair GM vehicles. The Service Information is updated regularly and includes important specifications for different […]
After replacing, or removing and reinstalling, the B233B Forward Range Radar Sensor on the 2024-2025 Acadia, Traverse; and 2025 Enclave, the sensor module alignment must be calibrated by performing the […]
Installation of the front license plate bracket on 2025-2026 Enclave models requires using a short drill bit to avoid damage behind the front fascia. Using a longer drill bit while […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the June GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
As Service Programming System (SPS) events become larger in size and more frequent for all GM models, it’s important to ensure the most reliable connection method to the MDI 2. […]
A variety of resources covering the operation of Techline Connect (TLC) are now available on Global Connect. The new TLC App Resources page (Fig. 6) contains several helpful user guides, […]
Microsoft has announced it will discontinue free support of the Windows 10 operating system (OS) on October 14, 2025. The Techline Customer Support Center (TCSC) will continue to support personal […]
There may be multiple DTCs set on some 2025 Silverado 1500, Tahoe Suburban, Sierra 1500 and Yukon models equipped with the 3.0L diesel engine (RPO LZ0). The DTCs, including many […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar reviews loss of propulsion conditions on the L87 engine. […]
The Vehicle-Wide Programming (VWP) feature in Techline Connect (TLC) has been updated with several enhancements in the latest software release. VWP, which allows multiple control modules to be programmed during […]
A new TechLink reference chart is now available covering transmission fluid capacities. The 2025 Transmission Fluid Capacities chart can be viewed under the Reference Charts menu or by selecting the […]
The 2025 Tahoe can be equipped with special service vehicle packages for police use (RPO 9C1) (Fig. 7; shown with aftermarket equipment) and special service use (RPO 5W4). Fig. […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the May GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]