Several changes have been made to the 9-speed transmission (RPO M3W, M3F, M3H, M3G, M3T, M3V, M3U) automatic transmission fluid Oil Level Control system (OLC) for 2023-2024 Enclave, Encore GX, […]
The Super Cruise driver assistance feature (RPO UKL) on 2022 Tahoe, Suburban, Yukon; and 2022-2023 Escalade models uses front short-range radar to allow Super Cruise to perform lane-change maneuvers. When […]
When USB programming the radio (RPO IVD) on some 2023 Colorado, Canyon; 2023-2024 LYRIQ; and 2024 XT4, Blazer EV and Silverado EV models (Fig. 8), a message may display that […]
The September Techline Connect (TLC) software release includes several updates to enhance the performance of the application. The update should be downloaded automatically when logging in to Techline Connect. (Fig. […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar takes an up-close look at the all-new 2024 Blazer […]
During any service repair on 2024 and earlier GM models that involves cylinder head removal, installation or replacement, it’s critical that all dirt, debris and coolant be cleaned from the […]
Some fleet drivers of BrightDrop EV vans may notice proper seat belt operation is affected by the cleanliness of the belt and retractor guide. Due to the high amount of […]
Software update V19.00 has been released for the CH-47976 Active Fuel Injection Tester (AFIT). It includes testing data for all vehicle programs launching through December 2023. The software should be […]
The Active Fuel Injector Tester (AFIT) Vehicle Application Chart, which can help identify the correct cable adapters for each GM model, has been updated with the latest model year information. […]
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 […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar takes a look at the 2023 Corvette with the […]
As production of the sixth generation Camaro comes to an end, the legacy of the muscle car is being celebrated with a special Collector’s Edition (RPO Z4B) on the LT/RS, […]
Transport Mode, or Logistics Mode, is used to increase 12V battery stand time during transit as well as long periods of stand time in dealership inventory for traditional internal combustion […]
The LED “on” indicators on the upfitter auxiliary switches (RPO 9L7), located on the instrument panel, may not illuminate properly on some 2023 Silverado 1500, Sierra 1500; 2024 Silverado 2500/3500 […]
A Service Headlamp System message may be displayed on the Driver Information Center (DIC) on some 2020-2023 Corvette models equipped with the Front Lift System (RPO E60). (Fig. 8) The […]
An Action Center for U.S. dealerships to provide feedback on the all-new 2024 Buick Envista (Fig. 10) has been established by the GM Technical Assistance Center (TAC). Fig. 10 […]
The EL-52800 Diagnostic Charge Battery Station (DCBS) is the recommended and approved tool for diagnosing battery replacements and submitting battery warranty claims. And effective January 1, 2024, the DCBS (Fig. […]
When an Over-the-Air (OTA) update has been downloaded to a 2021-2024 Chevrolet, Buick, GMC or Cadillac vehicle and is available to be installed, a message is displayed on the infotainment […]
The 2024 Envista is an all-new model in the Buick lineup. (Fig. 11) With a long wheelbase, low roof and the sleek profile of Buick’s new design language, it offers […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the July GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
Diagnosing History DTCs
Oil Pump and Engine Wiring Harness Conditions
Charge Air Inlet Pipe Air Leak
Engine Vibration After Engine Mount Replacement
GM Service Know-How Emerging Issues
Latest GM Global EPC Update Enhances Search Functions and Part View Options
Dust Intrusion in the EVAP System
June Service Newsletter from the Experts at GM TAC
Programming Key Fob Transmitters
Pop or Rattle Sound When Turning
All-New Chevrolet Trax Gets Bigger and Bolder
2024 Trax TAC Action Center
FSE Technician Recognition Awards – 2nd Quarter 2023
GM Service Know-How Emerging IssuesGM Dealer Equipment (GMDE)
TAC Newsletter August 2023
Techline Connect Tips March 2023
The latest software update (V18.00) for the CH-47976 Active Fuel Injection Tester (AFIT) has recently been released. The software should be downloaded to ensure proper functionality of the AFIT. It […]
The Techline Customer Support Center (TCSC) has released their latest tips for Techline Connect and the Service Programming System. The tips — included in the easy-to-print PDF below — cover […]
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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