The Super Cruise driver assistance technology may disengage or be unavailable on some 2021-2025 Escalade; 2023-2025 LYRIQ; 2024-2025 Traverse, Acadia; 2025 Enclave, CT5, ESCALADE IQ, OPTIQ, Blazer EV, Equinox EV, […]
The GM Technical Assistance Center (TAC) has established a TAC Action Center for U.S. dealerships to provide product feedback on the all-new 2026 Cadillac VISTIQ. (Fig. 14) Fig. 14 […]
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, […]
Update – Midtronics DCA-8000 Diagnostic Charger is the Only Accepted Battery Tester for Warranty Battery Replacement (U.S.)
Rear Leaf Spring Noise and Possible Fuel Contamination
2027 Bolt State of Charge and NACS Charging Tips
Fuse F17UA and Possible No Start Condition
Inoperative PTO on Silverado Medium-Duty Trucks
Create Custom Data Lists in GDS 2
Updated Transfer Case Input Shaft Seal Installation
A/C Leak Detection Dye for EVs
When and Why to Use Fuel Additives
GM Service Know-How Emerging Issues
Check 55-Way Connector if Glow Plug DTCs are Set
Setting Up Wired and Wireless MDI 2 Connections
MDI 2 Advanced Setup Technical Tips Update
April Service Newsletter from the Experts at GM TACDCA-8000
Troubleshooting
Guide
TAC Newsletter April 2026
TAC Newsletter March 2026
MDI-2 Connections and Advanced Setup 2026
CX Connect Case Creation Help + Tips and Tricks
The new 1.2L engine (RPO LBP), introduced in the 2025 Envista, Encore GX, Trax and Trailblazer, features E85 compatibility. As part of the updates to the Evaporative Emission (EVAP) system, […]
With the MDI Manager application software, the MDI 2 can be configured to communicate with a PC using several possible networks, such as a USB cable, ethernet cable, Wireless Local […]
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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