Transmission shudder. Seems common after 40,000 miles on the majority of 2017-19 Colorados. Truck would vibrate like driving over a rumble strip around 55+ mph after transmission fluid would warm up above 80 degrees F. should be a recall because I had to go through hoops to get them to even look at the transmission because they thought it was a tire or wheel weight. Super inconvenient and time consuming.

- Momence, IL, USA

I got a check engine light while and engine goes into reduced power mode. You can't drive in reduced power mode! I have to clear it to move the truck. I did a scan which showed a P2138 code. But its just in memory and the dealer wont fix it unless its an active code but can't drive to the dealer in reduced power mode. Its a catch

- Little River, SC, USA

Transmission shudder

- Kansas City, MO, USA

My truck shudders horribly on highway and in town. It started just before my last service at 33731 miles. I mentioned it to service advisor and was told without a code as owner I would be the only one that could tell this. Nothing was done. The issue is irritating I researched and found out it is an issue with many Colorados and GM vehicles with the same transmission. I will be checking with the dealership service again to see with the information I have discovered if anything will be done.

- Lewisville, TX, USA

Transmission shuttering and jerking. Recall needs to be done immediately.

- Lexington, SC, USA

Experience transmission shudder while driving vehicle. Could cause issue while passing other vehicles due to loss of power. The amount of money these newer vehicles are charging, transmission shifting should be flawless. Not sure if this is going to get worse and cause an accident. Could it jump gears while trying to come to a stop? this is ongoing and needs to be addressed and a remedy by the manufacturer soon.

- Johnstown, PA, USA

Shudder and slipping in the gears caused by bad fluid and torque converter.

- Houston, TX, USA

Hard shifting & slipping of the transmission started at about 10,000 miles. Dealer unable to repair even though they tried 4 times including a remanufactured transmission. Not sure what type of damage is occurring to the transmission with this hard shifting.

- Whitefish, MT, USA

Vehicle shudders/shakes when accelerating or maintaining speed. Can be light shudder, like driving over a bumpy road. Or can be enough to make everything sitting in dash to shake violently.

- Lakeland, FL, USA

The contact owns a 2017 Chevrolet Colorado. While driving at high speeds, the vehicle started to violently vibrate. The failure also occurred when accelerating from a stop. The vehicle was taken to dyer Chevrolet fort pierce (4200 us highway 1, fort pierce, fl 34982, (772) 242-3116) multiple times for the failure where the transmission was serviced and flushed; however, the failure recurred. The vehicle was not repaired. The manufacturer was made aware of the failure and the contact received a case number. The failure mileage was 17,000.

- Port St. Lucie, FL, USA

Sept 2018 have noticed that truck seems to vibrate, shudder at 50-60mph. Vibration, shuddering got worse, even at 25mpt. October, I contact service advisor who believes might be torque converter need appt to verify November finally got appt with service dept. They verify it is torque convertor and order parts. December parts in & truck in for 3 days as parts installed. Told this should solve issue, but Chevrolet working of another fix for 1st quarter of 2019. To date, I have not noticed any issues of vibration.date.

- Kitty Hawk, NC, USA

Fuel pump weld crack, service 4WD message displayed, clunking in rear end all dismissed repeatedly from dealership I purchased my vehicle from. I bought this truck new off the lot which has been in the shop in excess of 10 times for multiple issues. The 4X4 started November 2017 I was told it was because we were having abnormally cold weather and it would come out of it. It has been in multiple times since then and they were unable to duplicate. Clunking in rear was dismissed as nothing, could not duplicate. I started smelling burning plastic, then when starting my vehicle in the morning the exhaust smell was so overpowering that it would gag us. The burning plastic smell was intermittent while driving and that was only after driving the truck between 2 to 20 or the full drive home and sometimes not at all. I had been nodding off, getting massive headaches and sick to my stomach while driving my truck, so was my daughter. No matter what they had my truck for, they could not duplicate the issue and I had a loaner for a week at a time. I took my vehicle to another dealership who just ended up sealing my pickup box, replacing fuel pump module, installed a body plug per a bulletin, per bulletin applied lubricant to both rear leaf springs and torqued leaf springs to specs. Transfer case control module had a bulletin for which my dealer stated they put dielectric lubricant. I was driving a vehicle with my child in it with carbon monoxide poisoning us based on the symptoms we were both suffering, exactly when would that have been duplicated, at autopsy"??" I don't trust this truck, I don't want to drive this truck, I hate this truck now and I am stuck with 5 years of payments and something that tried to kill me. How is that for safety!!!! my opinion only!!!

- Palermo, ME, USA

While accelerating on the freeway from approximately 65mph, the stability control system engaged and took control of the acceleration of the vehicle. Roads were dry without ice, snow or rain. The stability control reduced power until the engine died even while pressing the accelerator to the floor. The engine would not restart for approximately 5 minutes. This occurred 3 times on different interstates on a trip. We were forced to carefully move to the right shoulder while our vehicle was slowing until the engine died. My wife and I were lucky we were not involved in a serious accident. Onstar notifications sent the following in an email, "an issue with the engine and transmission system in your 2017 Chevrolet Colorado has been detected. Please service your vehicle within 7 days."

- West Bend, WI, USA

At speeds 45 mph transmission makes a load thumbing sound and start switching back and forth for gear. At speeds 60 up to 70 mph a shuddering starts mostly up grades and down grades. From review there is a bulletin GM 16-na-175. From what I read this doesn't fix the problem. There are numerous of complaints.

- Bullard, TX, USA

Truck bogs down, looses power when taking off from a stop. Front tires feel like they are skipping even though truck is in 2 wheel drive especially up hill. Once truck gets going it rumbles and vibrates so much it bothers your ears, constantly loosing power and speed as your driving. Was told it was the torque converter and it was replaced. Truck continued to have same issue. Truck then 'blew up' (dealership words) while I was driving 75 mph down the highway. Dealership stated 'it was like your truck went into low gear while you were driving and it should never be able to do that'. had fluid flush and replaced again and rumbling and power lose still occurring.

- Mount Vernon, OH, USA

The contact owns a 2017 Chevrolet Colorado. While driving highway speeds, the contact noticed that the tachometer fluctuated and the transmission shuddered. The vehicle was taken to an unknown dealer where it was diagnosed that the transmission torque converter failed. The dealer replaced the torque converter and the transmission was flushed. The dealer also reprogrammed the transmission computer. The manufacturer was contacted and provided case number: 9-4982753540. The manufacturer issued technical service bulletin number: 4942742 pie0405C (engineering information torque converter shudder). The approximate failure mileage was 13,500. Consumer stated torque converter had wrong transmission fluid from factory.

- Jackson, WI, USA

At 21000 miles felt like driving over rumble strips and tach would move in cruise. Dealer flushed trans. 4 months later at 29000 miles same problem but now shifting hard noticed during acceleration and deceleration. Changed out converter and flush. Now 3 months later and only 2500 miles later it has started all over again. So back to the dealer I will go. Am starting to regret buying a Chevy instead of staying with my trusty Ford

- Port Charlotte, FL, USA

Transmission shudder. Fells like driving over rumble strips. GM knows of this issue but keeps putting these 8 speed transmissions on the road.

- Gadsden, AL, USA

When automatic transmission downshifts into 1st gear coming to a stop, it lunges forward. If when nosing into a parking space with any kind of pole or vehicle directly in front of my truck, not leaving enough space my truck would hit whatever. When driving slowly with my 8 speed automatic transmission sometimes it rattles as if I am on a rumble strip and sometimes it just clunks or thuds. This and other shift issues make me even more hyper vigilant when driving. 6 months after I purchased my brand new 2017 Colorado, during a spell of negative degree weather I lost the following: My cruise control, traction control, four-wheel drive; my engine light came, oil light all lights came on and my radio stopped working. I was told by my Chevy dealer that this was normal in cold weather. Next, I was informed it must be because I washed my vehicle the day before. This went on for a few months, with me showing them videos and them telling me they could not duplicate the issue. October of 2018 they replaced my radio because evidently the radio had a bulletin that showed all of the things I had complained about. I want to say this happened in excess of 10 or more times. Driving to my mothers one evening in the dark my dash lights were not dimming correctly and then went out. As I got to a four way intersection with cars coming they came on so brightly I almost got in an accident which prompted me to make an appointment and I wasn't willing to hear silly excuses.

- Palermo, ME, USA

I have had repeated issues with the transmission and the transmission will not shift out of 5th gear when in tow mode and when towing load under specifications. I have started the lemon law process but the manufacturer has denied my claim as of today.

- Parsonsburg, MD, USA