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 trailer lighting and braking operation. […]
Technicians can use Dealer Case Management (DCM) to create, view and update Techline cases in real time with the Techline Customer Support Center (TCSC), reducing the time spent waiting on […]
The 2025 Envista, Encore GX, Trax and Trailblazer are available with the new 1.2L engine (RPO LBP). The engine configuration features E85 compatibility, which required an update to the Evaporative […]
The North American Charging Standard (NACS) DC adapters (Tesla Supercharger adapters) (Fig. 11) that are available from GM are for use on public DC Fast Charging stations only. Fig. […]
The GM Warranty Parts Center (WPC) requests the return of specific parts replaced at dealerships through the Global Warranty Management (GWM) system to better understand and help resolve product issues […]
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 […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the March GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
The GDS2 core update 22.8.00900 in Techline Connect that was recently released on March 10 included various bug fixes. The update will download and install automatically upon logging into Techline […]
The EL-52100 MDI 2 is required for control module programming, configuration and setup on GM vehicles equipped with the Vehicle Intelligence Platform (VIP) electrical architecture. (Fig. 2) Fig. 2 […]
Low and erratic oil pressure at idle may be found on some 2024-2025 Acadia, Traverse; and 2025 Enclave models equipped with the 2.5L engine (RPO LKO). DTC P06DD (Engine Oil […]
There may be several communication DTCs set along with several Driver Information Center messages —Service Power Steering, Service StabiliTrak, Service Rear Drive, Service Restraint System — displayed on some 2020-2024 […]
There may be a “Heavy Fuel Use” message on the Driver Information Center (DIC) (Fig. 11) at times while driving on some 2023-2025 Escalade, Silverado 1500, Tahoe, Suburban, Sierra 1500, […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar covers valve body repair on the 10L80 transmission. (Fig. […]
2024-2025 Equinox EV and 2025 OPTIQ models feature large, overlapping windshield wipers that provide a clear view of the road ahead for drivers. If the wiper arms are not aligned […]
Harsh Garage Shift into Drive or Reverse on Envista and Trax Models
Safety Arc-Rated Personal Protection Equipment for Electric Vehicles
Engine Oil Capacities Chart for the 2026 Model Year
2026 Corvette ZR1X TAC Action Center
Blank Screen Display Diagnostic Tips
Make a Reservation to Meet with Your FSEs in 2026
GM Introduces Digital Key, Offering Convenience and Easy Access
Key Cards Put Vehicle Access in Your Wallet
New 2026 Corvette ZR1X Delivers Twin-Turbo AWD Hypercar Performance
MDI 2 Manager Update Adds Support for New Wireless Dongles
Latest CX Connect Update Delivers Streamlined Operation and Enhanced Search Functions
GM Service Know-How Emerging Issues
Engine Control Module Diagnosis and ECM Part Restriction
Front Brake Caliper Sound and Uneven Pad Wear
3rd-Row Seat Switch Diagnosis
Check Ground Terminals for Transmission Fluid Temperature Sensor Circuit Condition
December Service Newsletter from the Experts at GM TAC
FSE Technician Recognition Awards – 4th Quarter 2025DCA-8000
Troubleshooting
Guide
TAC Newsletter February 2026
TAC Newsletter January 2026
Techline Connect Tips November 2024
CX Connect Case Creation Help + Tips and Tricks
Safety Arc-Rated (AR) Personal Protection Equipment (PPE) is recommended to be used by technicians when servicing some high-voltage battery packs under certain scenarios on GM electric vehicles. The PPE that […]
GM diagnostic strategy does not support the practice of swapping control modules during the course of diagnosis or to expedite a repair. Features in today’s vehicles are increasingly software configurable. […]
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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