The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the February GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
A vehicle shudder and a growl or humming sound may be present when driving between 28-53 mph (45-85 km/h) on some 2024 Envista and Trax models equipped with the 6T40 […]
Some 2023-2025 Colorado, Silverado 1500, Canyon and Sierra 1500 trucks equipped with the 2.7L engine (RPO L3B, L2R) may have poor heater performance due to blocked coolant flow. The coolant […]
Some 2024-2025 Encore GX, Enclave, XT4, XT5, XT6, Blazer, Trailblazer, Traverse, Acadia, Terrain; and 2025 Equinox models equipped with the 9T45/50/60/65 9-speed automatic transmission (RPO M3F, M3U, M3H, M3T, M3G, […]
The latest TechLink 2025 Engine Oil Capacities chart is now available under the Reference Charts menu. The chart includes engine, RPO, specifications (liters and quarts), oil viscosity and engine oil […]
There may be an issue with the MDI 2 point-to-point wireless functionality after updating the operating system of PCs in the service department running Windows 11. After performing the latest […]
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 the latest updates to training paths in the […]
The rollout of Multi-Factor Authentication (MFA) for logging in to Techline Connect is now underway for GM dealerships. In the coming weeks, Global Connect Headline communications will be released with […]
Some 2023-2024 Colorado, Canyon; and 2024 Blazer EV models may have a turn signal condition and, on 2023-2024 Colorado, Canyon models, a rattle sound may be heard coming from the […]
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 […]
There may be a rattle sound heard from the brake pedal area on some 2025 HUMMER EV models. The sound may be caused by excess body seam sealer extending under […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the January GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
The all-new 2025 OPTIQ is the latest entry in Cadillac’s EV lineup. (Fig. 3) It will launch with several segment-leading features that add to its performance, style and functionality. […]
The GM Technical Assistance Center (TAC) has established a TAC Action Center for U.S. dealerships to provide product feedback on the all-new 2025 Cadillac OPTIQ. (Fig. 13) Fig. 13 […]
Whine sounds, or similar sounds, from the 10-speed automatic transmission on some 2020-2025 CT4, CT5, Escalade, Camaro, Silverado 1500, Tahoe, Suburban, Sierra 1500 and Yukon models equipped with the 10L60/80/90 […]
The new all-electric 2025 ESCALADE IQ and new 2025 Escalade and Escalade ESV deliver a truly luxurious passenger experience with inspiring design, craftsmanship and technology. These full-size SUVs offer a […]
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 the operation of the new 2025 ESCALADE IQ […]
GM dealership technicians can learn about the latest technical information and repair procedures from their Field Service Engineers (FSEs) in the 2025 Lunch with Your Field Service Engineers meetings that […]
CX Connect Case Creation Tips
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Corvette Center Console Latch Pushbutton Replacement
New Dash Cover Addresses Windshield Glare
The Info on Dealer Information — Choosing the Right Contact for Service Department Concerns
GM Service Know-How Emerging Issues
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Loss of A/C and Warm Air Conditions
July Service Newsletter from the Experts at GM TAC
Power Hood Closure Conditions
Diesel Engine Oil Cooler Seal Leak
Check Grounds for No Start Condition
Battery Cable Clamp Alignment Results in Low Voltage
Upper Body Auxiliary Lamp Connection
Anti-Chip Coating Appearance on Full-Size Trucks
GM Service Know-How Emerging Issues
OneCRM and Dealer Case Management System MigrationDCA-8000
Troubleshooting
Guide
TAC Newsletter September 2025
TAC Newsletter August 2025
Techline Connect Tips November 2024
CX Connect Case Creation Help + Tips and Tricks
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 […]
As Service Programming System (SPS) events become larger in size and more frequent for all GM models, it’s important to ensure the most reliable connection method to the MDI 2. […]
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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