The Lunch with Your Field Service Engineers monthly meetings held online via Microsoft Teams offer GM dealership technicians, shop foremen and service managers the latest technical information and repair procedures […]
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 […]
Digital key is a new convenience feature that allows a customer to use a compatible smart device, such as a smartphone or smartwatch, in place of a conventional key or […]
Key cards are wallet-sized cards that can be used to unlock, lock and start a number of GM vehicles when the key fob is not available. Key cards may be […]
The numbers are staggering. The new 2026 Corvette ZR1X produces a combined 1,250 horsepower from its 5.5L twin-turbocharged V8 engine (RPO LT7) and front electric drive unit. The result is […]
The latest update to the MDI 2 Manager in Techline Connect (version 9.1.2752.177) includes support for new MDI 2 wireless dongles. The new wireless dongles are similar to the previously […]
IMPORTANT: The CX Connect release will now be available on Thursday, January 22nd. We appreciate your patience and understanding in this matter. The latest CX Connect release (January 2026) includes […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar looks at the Corvette brake systems and provides some […]
The E01 Engine Control Module (ECM) for 2022-2026 CT4, CT5, Silverado, Sierra; 2023-2025 Envision; 2023-2026 Colorado, Canyon; and 2024-2025 XT4 models equipped with the 2.0L engine (RPO LSY) or 2.7L […]
There may be a squeal or tick (rotational type noise) heard coming from the front brake calipers when the brakes are not applied on some 2023-2026 Colorado and Canyon trucks. […]
Some 2025-2026 ESCALADE IQ models may have a 3rd-row seat that cannot be operated using the 3rd-row seat switches in the cargo area. (Fig. 10) Fig. 10 If […]
Some 2024-2026 Chevrolet 5500 HG/5500 XG Low Cab Forward (LCF) models equipped with the 6.6L V8 engine (RPO L8T) and 6-speed Allison automatic transmission (RPO MW7) may have several DTCs […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the December GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
The GM Field Service Engineer (FSE) Technician Recognition Awards (U.S.) celebrate the skill and dedication of dealership technicians who have recently worked with FSEs on challenging repairs. Technicians at GM […]
November Service Newsletter from the Experts at GM TAC
Questions About Labor Times?
Stay Updated — IOK Radio Software and Connection Conditions
Key Fob Synchronization
Tips on Identifying Diesel Fuel Contamination
Midtronics Diagnostic Charger DCA-8000P Announced as Essential Tool
Accessing Air Ride Adaptive Suspension Data
Aftermarket Exhaust System Conditions
Lower Case Extension and Oil Pan ComparisonDCA-8000
Troubleshooting
Guide
TAC Newsletter December 2025
TAC Newsletter November 2025
Techline Connect Tips November 2024
CX Connect Case Creation Help + Tips and Tricks
All buttons on one key fob (Remote Keyless Entry transmitter) may be inoperative on some 2023-2026 Escalade, LYRIQ, Corvette, Silverado 1500, Silverado 2500HD/3500HD, Tahoe, Suburban, Sierra 1500, Sierra 2500HD/3500HD, Yukon; […]
To avoid wait times for technical support in the dealership, prior to contacting the GM Technical Assistance Center (TAC) and Techline Customer Support Center (TCSC) as well as and other […]
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.
Designed by WPZOOM
