What happens when an engine replaced under warranty arrives at the Warranty Parts Center (WPC)? A new video available on Global Connect takes an inside look at the engine teardown […]
The Tire Pressure Monitoring System (TPMS) allows for live tire data (Fig. 13) to be transmitted from each tire and interpreted by the K9 Body Control Module (BCM). The data […]
The door latches, both conventional and electronic latches, on GM models are controlled by the Body Control Module (BCM). (Fig. 1) Understanding how the BCM drives door latch actuators — […]
The GM Accessories Outside Rearview Mirror Housing Cover Package available on 2021-2027 Tahoe, Suburban, Yukon and Escalade requires removing the mirror glass from the current mirror housing before installing the […]
Open a door without pressing the Unlock button on the Remote Keyless Entry transmitter when the Content Theft Deterrent system is armed and the vehicle alarm will quickly let you […]
Returning all related parts and components from a transmission repair to the Warranty Parts Center (WPC) is critical to determining the root cause of an issue. (Fig. 10) Key stakeholders […]
The Body Control Module (BCM) on GM models built on the Vehicle Intelligence Platform (VIP) — first introduced in the 2020 model year — acts as the central controller for […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. The September seminar (10226.09V – U.S.) highlights the GM-60637 EVAP System Tester. (Fig. […]
GM has recently announced that the serial numbers of removed and installed components must be recorded when certain labor operations are used. Tracking serial numbers helps link returned components to […]
The 2024-2026 Corvette E-Ray; 2026-2027 Corvette ZR1X; and 2027 Corvette Grand Sport X use two lithium-ion batteries — one for high-voltage functions with the front electric axle and one for […]
The latest Service Programming System (SPS) update in Techline Connect features a new option when selecting the SPS programming type. (Fig. 1) This new requirement is designed to help reduce […]
For more than two decades, GM World Class Technician (WCT) status has been the highest recognition a GM service technician can earn. (Fig. 3) Established in 2004, the program recognizes […]
The low tire pressure MIL may be illuminated along with a message on the Driver Information Center on some 2024-2026 Acadia, Traverse; and 2025-2026 Enclave models. In addition, the tire […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the August GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
BCM Series: Content Theft Deterrent System
Return All Transmission-Related Parts to the WPC
New Body Control Module Series: Unlocking Keyless Entry Functions
GM Service Know-How Emerging Issues
Record Serial Numbers for Removed and Installed Components Under Certain Labor Operations
Control Module Reprogramming Selection Now Required in SPS
Becoming a World Class Technician – New Certification Requirements Coming in 2028
Ethernet Cable Overlay for Telematic Control Module Interference
August Service Newsletter from the Experts at GM TAC
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 IssuesTAC Newsletter September 2026
TAC Newsletter August 2026
DCA-8000
Troubleshooting
Guide
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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