Prelube Procedure Required Before Drive Belt Installation During Engine Replacement
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 […]
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 […]
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 […]
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 […]