Transmission exploded from the inside causing catastrophic failure that could have resulted in death. Milage on vehicle was 20k. No indication of transmission issues on warning sensors in the car or through feeling the transmission slipping or hearing any noises before it occurred

- Yucaipa, CA, USA

Truck had a vibration in 4WD when accelerating since purchased new in September 2018. Found excessive metal on transfer case magnetic drain plug. After several warranty visits to multiple dealership service departments that denied any warranty issue existed, I paid out of pocket to have a reputable transmission company pull and open up the transfer case. The transmission company determined the transfer case had a manufacturing defect where a drive sprocket had been improperly spaced on the output shaft causing the 4WD chain to run at an angle destroying the chain and drive sprockets. GM refused to admit any fault or pay for the repair on a vehicle with only 37,000 miles and a 5 year, 100,000 mile warranty.

- South Jordan, UT, USA

Experienced known chuggle issue at only 200 miles on the new vehicle. Information regarding this known issue by GM below (known issue since 2017). #pip5480: Hesitation, bump or chuggle involved region or country: North America additional RPO/S: 6.6 L5P condition: Customer concern may be of a hesitation, bump, chuggle, jerk or a feeling of harshness under the following conditions:  1. vehicle speed in the range of 25-45 mph.  2. light accelerator pedal tip-in or tip-out maneuver.  3. transmission in 3rd gear. Cause under investigation. GM engineering is aware of this concern and is working on a resolution (since 2017 when L5P power plant was released yet they keep releasing vehicles with this issue)

- South Jordan, UT, USA