Poor shifting, engine bogging down going up hills, shudder. I have had vehicle in to at least 3 different Chevy dealerships complaining of shudder, slipping and they claim they can't reproduce. It's getting much worse now. Started around 60k miles

- Terre Haute, IN, USA

2016chevyz714wd Key gets stuck in the ignition! Over and over! I-€™ve been to dealer/ no help there! What a nightmare! Can-€™t remove ignition key in parking lot to go to work! Recall and get a fix! This is a daily problem! [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Occidental, CA, USA

2016 colorado SERVICE BULLITEN PI1429 CANT REMOVE KEY FROM IGNITION WHEN PARKING SHIFT LEVER ISNT ENGAGING OR FULLY SEATING. THIS IS POTENTIALLY VERY DANGEROUS IF AN EMERGENCY EVER AROSE OR RESPONDING TO IT...IF YOU CANT REMOVE THE KEY FROM THE IGNITION THAN WHAT IS THE POINT OF EVEN DRIVING THIS TRUCK. THIS NEEDS TO BE RECALLED IM NOT GIVING CHEVY $800 TO FIX YOUR OWN MISTAKE. PAID 30K FOR A TRUCK THAT YOU CANT TAKE THE KEY OUT OF.

- Palmer, MA, USA

There is a loud roaring noise when driving on highway and city streets. It's louder at higher speeds.

- Charlestown, IN, USA

Transmission shifting hard and slipping in gear 1 and 2 also down shifts hard 2 and 3 gear.

- Bakersfield, CA, USA

The contact owns a 2016 Chevrolet Colorado. The contact stated that while the vehicle was in park, the steering wheel seized while the service power steering assist warning light illuminated intermittently. The contact stated that the vehicle stalled and shut-off while in park. The contact waited for approximately two minutes for the vehicle to resume normal operation. Jon hall Chevrolet (551 N nova rd, daytona beach, fl 32114, (866) 783-3101) was contacted and the contact was informed that the VIN was not under recall. The manufacturer was not made aware of the failure. The failure mileage was approximately 39,980.

- New Smyrna Beach, FL, USA

When traveling forward, or turning, at highway speeds between 20 mph and 40 mph, this vehicle shudders ( 6 speed transmission)and acceleration pauses until a lot of extra effort is placed on the gas pedal.the transmission then downshifts with a sudden lurch. This leads to a safety hazard when instant acceleration is needed.this happens everyday at any time of the day and whether hot or cold.

- Canfield, OH, USA

Vehicle shudders does not downshift smoothly jerks when backing up at times, vehicle jumps when trying to shift to a lower gear. Brought to dealership, couldn't get the problem to occur, so nothing they can do and don't care to, vehicle has 36,000 miles

- Chapin, SC, USA

Driving my 2016 Chevy Colorado lt 4X4 down the highway and also on 2 lane roads in great weather conditions the service power steering and stabiltrak lights came on. Electric steering was disabled and I had extreme difficulty with turning left or right. This is the same recall as GM 15595. Turning the vehicle off and on resolves the issue temporarily. Now it is happening more and more and I do not feel safe with my family in the vehicle.

- Cartersville, GA, USA

When driving in stop and go traffic, and through city and residential areas, the transmission seems to struggle finding the correct gear. The transmission hesitates and does not shift as smoothly as it should, and sometimes shifts hard upon reacceleration, or sudden braking. The transmission also struggles to find the correct gear while highway driving (70-75 mph) with constant grade changes, and hills. (interstate 5 from los angeles to bakersfield ca. ) when starting the vehicle and placing it in reverse to back up, the transmission shutters slightly before engaging properly. This usually happens on a slight grade, as my street and driveway moderately sloped. I took the truck at the dealer for and unrelated issue, and ask them to check it. They said it was "normal". I have read about similar complaints on several forums, and its seems to be a very common complaint. This transmission seems to be junk! the time frame for this complaint is from 2/1/2019 (22,000 miles) to present. Others have complained with as little as 4,000 miles.

- Brea, CA, USA

The transmission is extremely slow to downshift. As you continue to push the gas pedal, it will finally downshift, sometimes two gears, and suddenly accelerate. When on cruise control, you loose about four mph before it finally downshifts, again sometimes downshifting two gears. In traffic, the car behind you doesn't anticipate the loss of speed and then you suddenly accelerate. It happens at all speeds, but is particularly unsafe at low speeds with the sudden acceleration. This is probably a software problem as the transmission shifts much more normally if you put it in 'tow/haul' mode. The dealer says this is 'normal' and GM calls it ' torque management '. it is especially unsafe in slick conditions or rainy roads. Btw, I have a 2017 Impala with the same six speed and V-6, and it does not exhibit this reluctance to downshift. Thank you.

- Burnsville, NC, USA

When I put the vehicle in park quite often when I turn the keys to the off position the keys don't go all the way off until I shift into gear a few times and back into park. I took in to the dealer and they said they cycled it many times and it was fine I brought it home and guess what the same thing. It is still happening

- Stallings, NC, USA

When pulling into traffic circle from low speed, no throttle response. Engine died or had no input to propel vehicle. Change of gear selector had no affect. Not until pushed to side of road, completely shut off and remove key did engine restart or have any response to throttle input.

- Greenland, NH, USA

The transmission (6spd automatic w/V6 engine) of this vehicle is known to have issues that will surprise you if you aren't already aware of them. The issue affecting safety the most, is the occasional engine acceleration while applying the brakes as the transmission downshifts to a lower gear. It causes the car to actually accelerate momentarily as you apply the brake even harder to arrest the increased speed. I was driving up a slight incline at about 35-40 mph when all of a sudden the car in front of me came to a complete stop because the car in front of her had stopped completely. I had driven this road for more than 30 years and had never seen anyone come to a complete stop as the first car did in this area. Five(5) of us were all surprised. I was the third car. As I firmly applied my brakes, the car initially slowed down but then it felt as if it was trying to accelerate and unfortunately I was unable to stop in time, although I only lightly tapped the car in front of me, followed by 3 more cars in back of me. At first I was surprised that I wasn't able to stop in time and then it occurred to me that the strange feeling I felt as the vehicle slowed was as if the engine had accelerated as it downshifted causing the braking action to not be as good as it should have been. Since I knew the car occasionally did this I thought I should report this as possibly contributing to my problem and put it on record in case you had other reports like this.

- Kailua, HI, USA

While stationary I tried to switch from 4WD auto, to 2wd. The light flashed and failed to change, then a service 4WD system popped up. The vehicle is stuck in 4WD auto and now loses all power while trying to turn.

- Madison, NH, USA

In 4 wheel drive turning left or right vehicle slides.skids, bounces and tires chirp from traction loss giving the sensation the drive train is falling out. GM refuses to contact me. This occurs on city streets, highways while in motion. Not on a specific date but constantly. Rain or shine.

- Lakeland, FL, USA

2016 Chevy Colorado with less then 10,000 miles. At low rpms on any incline truck will buck, sputter, and hesitate rather than automatically shift into lower gear. In city traffic, after slowing to make a turn then accelerating, truck will buck and sputter and drive train will make a hammer sound after engaging. I took it to dealer who said he could not duplicate problem, although this is a known problem.

- Florence, SC, USA

The contact owns a 2016 Chevrolet Colorado. The contact stated that a loud abnormal noise was heard when shifting into park or reverse, and the vehicle hesitated before shifting into gear. While driving 45 mph, the vehicle lost power without warning. Also, when the vehicle was engaged in park, the key was unable to be removed from the ignition. The vehicle was taken to bellamy strickland Chevrolet Buick GMC (145 industrial blvd, mcdonough, ga 30253, 770-954-3000), but the cause of the failures could not be determined. The manufacturer was not notified of the failures. The failure mileage was approximately 35,000.

- Mcdonough, GA, USA

I purchased a brand new 2016 Chevrolet Colorado duromax diesel in September of 2016. At 9,638 miles the check engine light came on for the nox sensor. The dealership replaced them but it did not fix anything. As it turns out the issue was a recall which reprogrammed the ECU. They decided to make the tolerances looser on the sensors. At 10,647 miles there was a loud wining coming from the rear of the vehicle. The race to the pinion bearing in the rear differential was pitted and causing the bearing to fail. The rear differential needed to be rebuilt. At 22715 miles the truck would go into reduced power mode which is 25 miles per hour in the middle of the freeway causing other motorists to swerve to avoid a collision. When the truck was turned off and turned back on the error would clear and the vehicle was drivable again. The dealership could not replicate the issue so it took many visits before they replaced the accelerator pedal position sensor. After this did not fix the issue and almost caused another accident the vehicle was taken in and the complete wiring harness was replace. The technician stated that the connectors were improperly crimped at the factory. The truck is now at the dealership again at 26,000 miles to replace the diesel exhaust fluid pump. This fault also causes the vehicle to go into reduced power mode which almost caused an accident again. This vehicle is not reliable, dangerous, and I do not feel safe driving it, especially when my family is with me. I contacted Chevrolet customer assistance team concentrix on behalf of Chevrolet to seek a solution on a brand new vehicle that had major problems. The representative did not care and told me to pursue a resolution on my own.

- Virginia Beach, VA, USA

Numerous times while driving, and going downhill the truck shifts to a much lower gear causing the RPM's to go up to 5500 and does not shift out. Twice I had the cruise control on and was on the highway (speed of 75) going down a hill and it shifted to a much lower gear. It has done this on other roads going down hill as well. In addition, numerous times when merging with traffic on a highway, I will try to tap the accelerator to safely merge with traffic and the truck has gotten "stuck" in a lower gear and would not shift out and I thought I was going to rear end a car so I had to ride my break to make sure it would not continue to accelerate into the back of a car. In addition to that, often when trying to accelerate out of a corner or after an off ramp, the truck will not accelerate at the same rate as the other vehicles around me. It will slowly accelerate as the vehicles around me pull away. In addition to that, when I am on the highway and I need to accelerate quickly to safely pass traffic, I have to push the pedal to the floor to ensure that the truck will actually accelerate. The dealer just tells me that the software is up to date and they could find no record of similar issues.

- Lakewood, CO, USA