

Engine (7%)
Transmission and Drivetrain (27%)
Brakes and Traction Control (0%)
Suspension and Steering (7%)
Electrical and Air Conditioning (13%)
Paint, Rust, Leaks, Rattles, and Trim (47%)
Other (0%)
308-horsepower 3.6L V6 8-speed shiftable automatic 4WD, part-time w/low range
48360 mi | Poor shifting between 1st and 2nd,and 2nd and 1st. could [not] repair, no GM fix known. common issue with this 8 speed transmission |
308-horsepower 3.6L V6 8-speed shiftable automatic 4WD w/low range
32000 mi | Transmission shifts very hard with a noticeable thunk in the first 2 gears. The dealer replaced the torque converter and fluid last year. They replaced the transmission fluid again in October. It seems better but not they way it should shift smoothly. |
3000 mi | Intermittent harsh 1-2 shift shift regardless of transmission temperature. Dealer said transmission was still in learning mode. Return if it persists. |
5900 mi | Returned for harsh 1-2 shift and occasional harsh mid range down shift. Provided dealer with TSB and tech bulletin for related to issues found on Colorado Fans Forum. Dealer kept for two days to diagnose and conduct service based on information provided. Repairs didn't fix issues and GM was contacted and new transmission is required for repair. Awaiting final authorization. |