Noticed a "shuddering" in the transmission during light acceleration between 40-60mph around 1500rpm. Whole truck vibrates like you are driving over rumble strips. Only 4150 miles on the truck!

- Clearwater, FL, USA

I have a 2018 Chevrolet Colorado lt 4WD crew cab. Multiple times on a cold start the engine is misfiring. The check engine like comes on, the vsa, and T/C lights all come on and a notification on the dash saying stabilitrak is disabled. The vehicle shakes terribly. The check engine light will flash and then go solid. I am an automotive technician. I know that a misfire should set a hard dtc. When the vehicle is turned off and started several hours later there is no check engine light or any other light on. The dealership in marysville, oh had my truck for 3 days and told me they cleaned a bunch of terminals at several connectors. Whatever that is supposed to do. They said they started the vehicle several times after and everything was good. The next day after I picked the truck up, it did the same exact thing! extremely frustrating! I know a continuous misfire let's unburned fuel into the catalytic converter which leads to premature breakdown of the catalyst. So my question is what is being done about these issues? another issue is with the transmission. On a cold start there is a clunk noise. Then when you are driving at cruising speed and you let off the throttle and depress throttle again there is a shudder. Also, when you come to a complete stop the vehicle tries to jolt forward. This is extremely concerning especially on a vehicle with roughly 18,000 miles on it. This needs to be addressed promptly!!

- West Mansfield, OH, USA

My vehicle shakes and shutters when accelerating. I have brought it to Chevrolet of wesley chapel fl 3 times for the same problem. The proceeded to do a "flush" and have replaced the torque converter.

- Dade City, FL, USA

Chevy Colorado a bad vibration in drivetrain. Took truck to dealer who said it was torque converter problem. It has been at dealer for 9 days because they are doing 9 vehicles a day for this problem. Supposedly they are going to change torque convertor, others they just change the oil in torque convertor. This is done approxmately 9 times a week at this one dealer, ross downing in hammond, la. This is the 8sp trans. That is used in several GM rear drive cars and trucks. My truck only has 6300 miles on it. When trying to pass vehicles on interstate it vibrates so bad over 70 mph I am afraid to wreck. Others I have talked to at dealership claim there vehicle vibrates at lower speeds, surges and making noise. This dealership doing 9 a week, that probably is several thousand a week statewide. This is a terrible problem that needs fixin. Many thanks.

- Hammond, LA, USA

Upon accelerating the vehicle onto a 3 lane road, all warning lights came on in the vehicle. A warning message presented on the dashboard stating "engine power reduction" and then the vehicle shut down completely while moving. The engine shut off and the vehicle would not disengage from park. Vehicle had to be towed from the location. At the dealership, the dealer informed me the engine throttle body and intake tube duct hose should be replaced. He also informed me GM is aware of this issue with the vehicle and has not developed a permanent fix for the issue.

- Lancaster, PA, USA

I had truck stationary parked on a slight incline on a dirt road for about 5 minutes when I heard a odd sound like "arrrrr clunk" and my car rolled down a hill. I had my car on park while on 4low with the engine off. I did not have my parking brake on though but the incline was so slight I feel I did not need it. My truck was not loaded with any extra weight or anything to cause it to roll down the hill. I truly believe I am not at fault for this happening it is a brand new car how could this happen? prior to this I was not doing anything extreme to damage my car in any way. Something must have failed on my truck.

- Granada Hills, CA, USA