Transmission shudder unless I put vehicle in tow haul. Shudders at a out 35 40 miles per hour. Seems to be a recurring problem from 2018 forward. This vehicle has only about 25 000 miles on it. I researched and also spike to a transmission person and they think it may be a computer issue. Supposedly they replace transmission fluid if that doesn't fix they replace took convertor. The problem I have is this is a long time recurring problem that should be identified and fixed by General Motors. A vehicle with such low miles built 2 years after they are aware these transmissions have the what's called dreaded shudder shouldn't still be happening.

- Anderson , IN, USA

The vehcile shifts hard from 1st to 2nd gear when it is newly started (regardless of the outside tempature).

- Hubert, NC, USA

There is a known issue with my truck, where the Transmission will all of a sudden lock up and then it shutters. The truck shakes violently and happens randomly. There is no rhyme or reason why this happens. Of course I'm barely over my warranty and Chevy in Austin states that it will be 3-5 days before they can review my truck. They won't provide a rental car or any help with a rental, so I'm expected to not have a car or figure out something myself to even have my truck looked at. My friend has GMC Canyon (same transmission) and had to have a level two mechanic replace his fluids. There are no warning lights or anything, this is a constant thing that is getting worse. There is a lawsuit in Canada for this issue that Chevy has known about and they haven't done anything about it.

- Austin, TX, USA

The rear end ring & Pinion bearings are effected. The rear end seems to be defective a high pitch noise is heard this started two weeks after purchase. It-??s been repaired twice and it is going back for a third time on 7-17-23 and it barely has 67,000 on it.

- Upton, WY, USA

The contact owns a 2020 Chevrolet Colorado. The contact stated that while driving at various speeds, the vehicle was experiencing a loss of power steering. The contact stated that the vehicle also lost motive power with unknown warning lights illuminated. The contact stated that the key was stuck in the ignition switch, and after several attempts, the contact was able to turn off and restart the vehicle. The vehicle was taken to a local dealer on several occasions however, the failure could not be duplicated. The vehicle was not repaired. The contact stated that the failure reoccurred and that while driving at an undisclosed speed, the vehicle was jerking and lost motive power. The vehicle was towed back to the dealer, where it was diagnosed that the transmission control module (TCM) needed to be replaced. The vehicle was repaired; however, the failure persisted, and the check engine and traction control warning lights were illuminated. The vehicle was towed back to the dealer, where it was diagnosed that the engine control module (ECM) needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The approximate failure mileage was 11,000.

- Hauppauge, NY, USA

Like the 2017-2019 Chevrolet Colorados my 2020 Colorado also has transmission shudders from time to time and I get random vibrations

- Hudson, WI, USA

The transmission on my 2020 Chevrolet Colorado often jerks when shifting and down shifting. This is especially true in colder temperatures where there is a significant hesitation and jerk when shifting from 1st gear to second gear. This is an automatic transmission. GM is aware of this issue and problem but are not resolving this problem as they indicated it should be acceptable. I have contacted both the dealer and GM. There have been no accidents related to this issue.

- Beulah, ND, USA

Vehicle is experiencing a shake and/or shudder during light throttle acceleration between 25 and 80 mph in a steady state of driving when the transmission is not actively shifting gears. The vehicle shudders as if I am driving on rumble strips. Tsb 18-na-355 shows same issue with 2017-2019 Colorados, but should probably include 2020 models as the condition is identical to what my vehicle is experiencing.

- Cordova, TN, USA

My new Chevy Colorado truck (10000 miles) has experienced vibration issued between 30-60 mph. Typically it happens when in cruise control between 50-60 mph and I transition from going downhill to uphill and the engine is starting to re-engage and accelerate to maintain speed. It feels like I am going over rumble strips and items in my glove box can be heard vibrating around. Apparently it is common enough that on the internet it is known as the "Chevy shake". I am worried about premature transmission failure. Also, if the internet is correct, Chevy has known about the problem since at least 2018. Also, if the internet is correct, Chevy has known about the problem since at least 2018. I have always it was the pavement conditions until I did some research online. I think I have really notices it within 3 months of purchase in May 2020.

- Pittsburgh, PA, USA

Front and rear axle locker failed to engage

- Hilliard, OH, USA

The vehicle is experiencing a shake and/or shudder during light throttle acceleration between 25 and 80 mph steady state driving when transmission is not actively shifting gears. The condition is as if I were driving over rumble strips. Tsb 18-na-355 addresses this issue in 2017 - 2019 Chevy Colorado pickup trucks with the 8 speed transmission. The 2020 model should be added as it does not appeared to be fixed at this time. I purchased this vehicle brand new from the factory with only 5 miles on it. The shudder issue has been persistent from the very first day I drove it.

- Lacey, WA, USA