CX Connect Case Creation Tips

CX Connect Case Creation Tips

The new CX Connect platform (U.S. only), the dealer-facing case system that replaces Dealer Self-Service (DSS) and Advisor Workbench/Siebel, changes how technicians manage all case types to the Technical Assistance Center […]

August 25, 2025
New Diagnostic Strategy: Reprogram Control Modules Before Replacement

New Diagnostic Strategy: Reprogram Control Modules Before Replacement

As Over-the-Air (OTA) updates and Vehicle-Wide-Programming become more commonplace on GM vehicles, a new diagnostic strategy is being implemented to better address performance concerns related to control module updates and […]

August 22, 2025
Corvette Center Console Latch Pushbutton Replacement

Corvette Center Console Latch Pushbutton Replacement

The center console compartment release button on some 2023-2025 Corvette models (Fig. 3) may become stuck in the depressed position or may extend out of the console compartment. If these […]

August 22, 2025
New Dash Cover Addresses Windshield Glare

New Dash Cover Addresses Windshield Glare

While driving into direct sunlight or under street lights at night, some drivers of 2024-2025 Equinox EV models (Fig. 7) may notice glare from the dash reflected onto the windshield. […]

August 22, 2025
The Info on Dealer Information — Choosing the Right Contact for Service Department Concerns

The Info on Dealer Information — Choosing the Right Contact for Service Department Concerns

In an effort to get the most useful information to dealerships, the GM Technical Assistance Center (TAC) has released an updated list of organizational contacts for service departments. (Fig. 12) […]

August 22, 2025
GM Service Know-How Emerging Issues

GM Service Know-How Emerging Issues

The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month the seminar reviews how to diagnose HVAC leaks. (Fig. 13)   […]

August 22, 2025
Learn More About CX Connect – New System Going Live Soon

Learn More About CX Connect – New System Going Live Soon

The launch of CX Connect, GM’s new Dealer Case Management system (U.S. only), is just around the corner, going live on August 11, 2025. The new CX Connect platform (Fig. […]

August 8, 2025
Techline Connect & GDS2 Split Update Released

Techline Connect & GDS2 Split Update Released

The rollout of the Techline Connect and GDS2 split update continues this week. On August 6, 2025, changes to the way GDS2 operates was released to all GM dealerships in […]

August 6, 2025
Poor A/C Performance Due to Loss of Refrigerant

Poor A/C Performance Due to Loss of Refrigerant

The fluorescent dye installed in the air conditioning refrigerant system of all current GM vehicles helps in locating leaks in the A/C system. Using the GE-42220 Universal 12V Leak Detection […]

July 31, 2025
Loss of A/C and Warm Air Conditions

Loss of A/C and Warm Air Conditions

There may be a loss of air conditioning, weak cooling or warm air coming out of the vents on some 2024-2025 Silverado 1500 and Sierra 1500 trucks. These conditions may […]

July 31, 2025
July Service Newsletter from the Experts at GM TAC

July Service Newsletter from the Experts at GM TAC

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 […]

July 31, 2025
Power Hood Closure Conditions

Power Hood Closure Conditions

The power hood (RPO AHV) (Fig. 1) on some 2022-2025 HUMMER; 2024-2026 Silverado EV, Sierra EV; and 2025-2026 ESCALADE IQ models may not close or cinch shut properly. There may […]

July 23, 2025
Diesel Engine Oil Cooler Seal Leak

Diesel Engine Oil Cooler Seal Leak

Some 2024-2026 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine (RPO L5P) may have an engine oil leak. In many cases, the oil leak may […]

July 23, 2025
Check Grounds for No Start Condition

Check Grounds for No Start Condition

There may be a no start condition on some 2025-2026 Equinox and Terrain models. In addition, the starter may click and there may be several DTCs set in the Engine […]

July 23, 2025
Battery Cable Clamp Alignment Results in Low Voltage

Battery Cable Clamp Alignment Results in Low Voltage

Some 2023-2025 Colorado and Canyon models may have a no start condition, a possible dead battery and multiple messages displayed on the Driver Information Center. There also may be several […]

July 23, 2025
Upper Body Auxiliary Lamp Connection

Upper Body Auxiliary Lamp Connection

The left or right rear upper body auxiliary lamp (Fig. 11) may not illuminate on some 2025-2026 ESCALADE IQ and ESCALADE IQL models. The upper body auxiliary lamp connector may […]

July 23, 2025
Anti-Chip Coating Appearance on Full-Size Trucks

Anti-Chip Coating Appearance on Full-Size Trucks

All 2018-2026 Silverado 1500, Sierra 1500; and 2019-2026 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks have stone guard protection applied to the lower painted surfaces that provides added defense against stone […]

July 23, 2025
GM Service Know-How Emerging Issues

GM Service Know-How Emerging Issues

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 installing the accessory puddle lamps on the ESCALADE […]

July 23, 2025