Chevrolet Colorado misfire problems

Filed Jul 9, 2025 · Engine · 3,000 miles · FL

The contact owns a 2023 Chevrolet Colorado. The contact stated that while driving, the vehicle decelerated from 70 MPH to 30 MPH. During the failure the check engine and traction control warning lights were illuminated. The vehicle was towed to the local dealer who diagnosed an engine cylinder misfire. No further information was available. The contact stated that the vehicle was serviced by the dealer on several occasions for the failure however, the failure persisted. The contact stated that the vehicle was unsafe to drive. The manufacturer was notified of the failure. The failure mileage was 3,000.

Filed May 2, 2025 · Engine · AZ

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 The engine has been replaced by GM and the failed engine is in the dealers' possession.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).

Filed Aug 25, 2023 · Engine · IA

Just prior to 8/1/22, check engine light came on. They found P0014 set, lack of power, rough idle. They found oil pushed through bank 1 cam solenoid actuator and had to replace on 8/1/22. Check engine light came on again in mid August 2023. Found P0024 code and had had to replace the cam actuator again. This time GM has part on backorder, like they are fixing systemic issue with part. They could only replace by getting from another dealer. Still charged me for part even though it was just replaced 12months ago. Would like to know if this is a systemic issue with GM.

Filed Jul 24, 2023 · Acceleration, Engine · FL

We purchased a 2019 Chevrolet Colorado December 2022. Beginning in January 2023 to current month July 2023 the vehicle has been at the dealership 4 times for the same occurrence: SERVICE STABILITRAK and ENGINE POWER IS REDUCED A warning “ding” sounds (the same noise as seatbelt, door ajar, etc) simultaneously with the messages “SERVICE STABILITRAK” and “ENGINE POWER IS REDUCED” The vehicle immediately is jerking or lurching, the engine no longer runs smoothly and is misfiring. The engine power reduced does not allow safe acceleration, and the vehicle is unstable (as it moves it feels like driving over a thousand speed bumps over and over), the engine misfiring is heard from the exhaust and the vehicle is visibly vibrating, on acceleration the maximum speed is 20 mph. All 4 times this has happened while driving the vehicle on highways in traffic. We are left unable to get out of the way of moving traffic, unable to accelerate, change lanes or make turns safely. Three of the four times we had the vehicle towed to the dealership. The last time the vehicle did this fortunately I was near our local dealership and drove it less than a mile so the service people could “witness” what I had been trying to explain what’s been happening with this vehicle. This is a very serious issue! My husband is 75 and very ill. I have to drive him 100+ miles for treatments on a regular basis. We cannot continue to be put in danger because of this vehicle default. We need this problem fixed not only for ourselves but for the safety of others, including unsuspecting drivers and innocent passengers, young, elderly, disabled, some simply misunderstanding our vehicles “failures to perform” in traffic on the roads. A trusted vehicle is very important. A stabile vehicle with sufficient engine power is a must if we are going to put it on the roads. “SERVICE STABILITRAK” and “ENGINE POWER IS REDUCED” is not new. General Motors needs to take action to correct this problem and educate dealers.

Filed Jan 22, 2023 · Engine · TX

Truck will have issues with misfires or rough idle. Technician advised that the truck has excessive intake valve carbon which is a known issue for 2015 - 2016 colorado and stated their is a bulletin for this know issue. However, this is not a recall even if they know this is something known that happens.

Filed Apr 27, 2021 · Fuel system · 45,000 miles · FL

After fueling, the vehicle cranks but does not start. After sitting for approximately 10 minutes, the engine will start but idles roughly for a few more minutes. Also after long highway drives, the engine will run roughly and occasionally stall when the vehicle is stopped. Vehicle was brought to dealer who diagnosed as a faulty purge solenoid. This is a known problem in 2015 models as detailed in gm special coverage adjustment letter #18029. This 2016 model year is not included.

Filed Feb 15, 2021 · Engine, Transmission · 31,719 miles · CA

Since shortly after purchasing the vehicle new, I have experienced hard shifting, slipping when accelerating, also experience rough idle at times.I have had the torque converter replaced but I still ha e the problem. I've even had the service manager ride with me and he stated he experienced the lugging sensation, and said it's normal, they still did nothing to help me, and this is noted on their service record! This vehicle has been in the shop several times for the same issue, and I get the same answer as they find nothing wrong.

Filed Sep 25, 2019 · Engine · 28,000 miles · CA

I have a 2005 chevy colorado standard cab 2.8 liter after 3 years I noticed engine internal noise start it up now it sounds like a diesel a lot of stuff is knocking around inside the motor I heard it was some type of recall on that but I'm not sure I do remember I had problems with throttle body have been replaced twice after this replacement from a certified technician that's when the problem of reduced power failure emitting from my dash could not go over 40 miles an hour check engine light would come on so I was told to disconnect battery for about an hour to let computer reboot and the problem would go away just for a little while when the motor is cold there's no noise it sounds like it's new but when it heats up that's when all the noises begin I always change my oil out every 3000 miles or 3 months I used castles 70,000 mi plus because I have 110000 mi on the vehicle I don't know if anyone who's had the same problem as far as the knocking in the motor but I do know that people have had problems with their throttle bodies malfunctioning and causing the truck to run rough and slow and sluggish now I don't drive it very far because I'm afraid that power reduction light will come on in my dash therefore I can't go over 40 miles an hour which I've mentioned this before all I can say is after this with the throttle body motor has been giving me problems vehicle was in motion

Filed Nov 18, 2018 · Engine, Transmission · 18,000 miles · OH

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!!

Filed Mar 15, 2017 · Engine, Transmission · 1,000 miles · DE

Vehicle stalls. When navigating a corner transmission looses its gear and acts like it doesn't know what to do and bangs and stalls. Also trans acts confused stop and go situations(city) and bangs when it remembers. Also does this when coasting on highway and accelerating again. It may jump down several gears and take off. Vehicle also has stalled several times at red lights and has a rough idle most of the time like it wants to stall. Been in shop numerous times for same thing and advised chevy but they cant figure it out and it is still doing it. Also looked online for possible answers and there are a lot of these same problems reported with no answers.