Transmission Shudder and Noise
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 […]
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 […]
Some 2019-2025 Silverado, Sierra; 2021-2025 Tahoe, Suburban, Yukon and Escalade models may have a keyless entry condition (Fig. 1) with a Service Keyless Entry message displayed on the Driver Information […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the December GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
The exhaust system fasteners may be loose or damaged on some 2022 Silverado 4500HD/5500HD/6500HD trucks and 2023 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine […]
The Air Ride Adaptive Suspension may be inoperative on some 2024-2025 Silverado EV RST and Sierra Denali EV models. A Service Leveling System message may be displayed on the Driver […]
When changing the engine oil on the 2023-2025 Corvette Z06 equipped with the 5.5L V8 engine (RPO LT6) (Fig. 11), it is critical to follow all steps in the Engine […]
If the air conditioning is not working or blows warm air on a 2024-2025 GM model, it may be due to a leaking condenser seal. The seal washers between the […]
There may be a vibration felt in the shift lever assembly or a rattle or tapping sound heard near the instrument panel or center console on some 2020-2023 Encore GX […]