2021 CHEVROLET COLORADO Complaints

There was a catastrophic engine failure of a 2021 Colorado 3.6L V6 engine. The engine has been replaced by GM and the failed engine is in the dealers' possession. While driving on a congested street, the engine misfired and immediately stopped. The vehicle rolled to a stop in the middle of 3 lanes. Occupants had to flag down traffic while pushing vehicle to the side. There was no warning lamps, messages or other symptoms, such as knocking, prior to the failure; and the oil service was maintained per manufacturer. Two separate dealers found "piston to valve contact, top of piston severely damaged, and metalic debris in intake plenum." GM Service Bulletin 19-NA-256 has identified "Seized engine" caused by defective "crankshaft main or rod bearing failure" that can put the oil filter "in by-pass and distribute unfiltered oil with bearing debris throughout the engine." In addition to the rod bearings, designated inspection points are the cam caps and camshaft journals on the heads and the timing change idler sprocket for stiffness when turning. Since the vehicle was 15,000 miles over the 60K warranty, they would not perform the designated diagnostic steps in Service Bulletin. Owner waiting on independent oil analysis. Service department provided pictures of metallic debris and valve damage, as well as the damaged spark plug. After opening Case # 9-14977425869 with GM Customer Service and asking why Warranty has not been extended or a Recall issued for the known manufacturer defect in the TSB, the response was "it likely has not occurred enough times to warrant a recall". With a dealer discount, total towing, diagnostic and repair costs exceed $11,000. Results of Blackstone Labs oil analysis will be provided when completed, however, the oil was just changed 462 miles prior to the failure, so a sample of the previous oil that would have contributed the most to the failure was not available (6,948 mi on previous oil).

The vacuum pump brake booster on my Chevy Colorado went out with no warning first the camshaft went out then once the cam shaft was fixed the brakes didnt work luckily I made it home but the risk was there as the brakes became incredibly stiff and hard to press with me using all my weight to stop the truck I had a mechanic look at it and confirm the pump/booster as the readings show it’s getting power and that it has air but the pump is not working there was no warning no lights no nothing one day it was working the next it wasn’t same with the camshaft both things happened with zero warning

Brakes make an intermittent grinding sound when cold but make no abnormal sounds when it is warm out. As far as the suspension goes..... The truck sits higher on the passenger side than the driver side by almost 1 inch.

When truck is put into park the key will not turn to the unlocked position, the key only goes as far as the accessories position. Not sure that the truck actually goes into park since I can not remove the key without playing with the shifter. This is a continuous problem with the truck

I was unable to turn the truck off and remove my key. I restarted truck, backed up and put back in park. It took 10-15 minutes of sitting in truck to finally get key out.

The contact owns a 2021 Chevrolet Colorado. The contact stated while driving at an undisclosed speed, the steering wheel briefly vibrated, and there was an abnormal knocking sound coming from the vehicle. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the steering rack. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the dealer, who then diagnosed a failure with the lower steering shaft, and the transmission 4x4 climbing gear. The vehicle was repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 53,000. The VIN was not available.

I was involved in accident where a driver ran a red light traveling approximately 60-70MPH and collided with the front of my 2021 Chevy Colorado ZR2 (22700 Miles). The hood was torn off, the entire front end of the truck was crushed with significant damage to the engine. The OnStar / SOS system also failed to work after the crash. The truck was deemed a total loss. I have spinal injuries, head and neck injuries, as well as leg injuries due to my knees taking the brunt of the impact into the dash. The airbags did not deploy.

The key is getting stuck in the ignition switch. I researched online and it appears to be a common defect with many of the Chevy trucks. This is a big safety concern.

Brake failure. Brake pedal became hard to push and little braking action. I relied on downshifting and the parking brake to stop the vehicle from 40MPH.

Power steering completely failed on 6/28/2024. Truck was purchased new in March 2021, and has less than 36,000 miles. Local Chevy dealer said entire power steering assist assembly must be replaced at $2,000+ but the wire harness is on backorder. Recall #21V213000 was for similar problem in 2015 models but the problem still persists, at least through June 2021. Obviously, GM dealer's must be replacing a lot of power steering assists if they can't keep the parts in stock.