SPS Events Soon to Require Hard-Wired Connection to MDI 2
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. […]
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 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 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 […]
The first-ever all-electric 2026 Cadillac VISTIQ (Fig. 1) is now in production and hitting dealerships. Slotting between the LYRIQ and new ESCALADE IQ in Cadillac’s EV lineup, the VISTIQ delivers […]
The 2025-2026 ESCALADE IQ/IQL and VISTIQ feature a first-of-its-kind rear cabin heating/cooling system (RPO C69) for 3rd-row passengers. The separate HVAC system, controlled by using the Front Command Center touchscreen […]
The GM DCA-8000P Diagnostic Charger – an Essential Tool for all U.S. dealerships – is the latest generation battery charger and tester from Midtronics that provides fast, accurate testing results. […]
A new half shaft part number has been released for 2019-2025 Silverado 1500 and Sierra 1500 trucks equipped with the Z71 Off-Road Suspension Package (RPO Z7X). (Fig. 20) The new […]
During the Pre-Delivery Inspection (PDI) of the 2025-2026 ESCALADE IQ/IQL, all interior protective coverings should be removed as covered on the PDI form, including on the front overhead console. (Fig. […]
There may be several display screen concerns and other conditions on the infotainment system (RPO IOK) of some 2022-2025 Silverado, Tahoe, Suburban, Sierra, Yukon, HUMMER EV; 2024-2025 Corvette, Silverado HD […]
The infotainment system (RPO IOK) on 2022-2025 Silverado, Tahoe, Suburban, Sierra, Yukon, HUMMER EV; 2024-2025 Corvette, Silverado HD and Sierra HD models is on restriction. (Fig. 3) If the radio […]
2025 Escalade, Escalade ESV and Escalade V-Series models built early in the model year offered a power-assist exterior door system (RPO APD with R6W) that has power-assisted door opening and […]
When replacing a valve body or transmission on a GM vehicle, it is essential to gather Mechanical Characterization & Virtual Matching (MCVM) data from the cloud. Due to manufacturing variations, […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar previews the 2025 Corvette ZR1. (Fig. 12) Fig. […]