Table 1 shows one common engine and engine cooling related problems of the 2023 Chevrolet Colorado.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems |
Engine light came on. Fan ran high. Had it towed to the dealership. Has 39,000 miles on it. Needs a new upper radiator hose due to a defective hose. Apparently, after reading online, gm is aware of this issue. Now we have to pay the diagnostic fee and $850 for a new hose and a flush, as well as the tow bill! now can’t get the part for a week or 8 days and then have to wait on the repair. This is unsatisfactory that there is a known problem and isn’t covered or hasn’t been a recall.
Faulty radiator inlet hose, upper radiator hose failure, outlined in pit6494a. This is the third time that the light on the dashboard has come on for failure, the first time they "fixed it" the second time they said it was the battery, it was not!! this time they are saying what it really is, the radiator hose failure, since the vehicle is only 3 years old but over the 36k mile warranty, they will not fix! failure on their part.
Coolant leak, upper radiator hose, TSB issued pit6494a over $500 repair. Not covered under any warranty.
The upper radiator hose on some huge percentage of these trucks fail (mine has failed at just over 20k miles). You can check the Colorado chevy forum, youtube, etc. , et al, and find plenty of instances where this has failed. As this is the cooling system, it can cause the engine to overheat and potentially ruin the engine. The flaw seems to be an engineering issue with the rubber seal they use (instead of a high quality o-ring) to seal the upper hose to the radiator. Additionally, since this can cause engine failure it should be addressed immediately. Instead, my local chevy dealer, since its not a recall item, said they could schedule a time next week for me to leave the truck and then they would get to it in 7-10 days. This is extremely unfair to the consumer who depends on these vehicles. This should absolutely be a recall item. You can find 1000's of examples online and if you can pull gm repair data, I'm sure you'll find 1000's more.
Radiator hose near failure, lose of coolant could be catastrophic. Upper radiator hose quick disconnect o-ring inside failed.
Upper radiator hose leak.
Since Friday, February 23rd 2026 when my 2023 chevy Colorado first start blowing oil out of the oil pan. Almost 5 qts total was lost when it arrived at the dealership. Truck was out of service from Friday until the following Wednesday, January 28th. The truck was picked up and taken on a drive out to (January 29th, 2026) waverly, KS from my hometown of prairie village, KS about 70 miles. On the way back home the truck went into safe mode at highway speeds. Lost all acceleration and barely made it off the side of the road before getting hit. Truck went back to dealership after being towed 70 miles. Where it was kept until Friday, February 6th. During this time at the dealership, they thought the problem was fixed, where again blew out all the oil while driving. Finally received the truck back. Check engine lights were still on but truck was holding oil and driving decent. Truck was doing fine until Monday February 16th. I was at a job and was driving home to finish the day. Again on the highway at highway speeds, truck goes into safe mode and limp it to gas station to again be empty on oil. It is still sitting there. Just last January the truck needed a new transmission at 48,000 miles and at the same time a wirinig harness for the back-up camera needed replaced. Alot of things have been going wrong with this truck to be so new. It has cost me alot of out of pocket expenses.
Vehicle: 2023 Chevrolet Colorado crew cab 4wd, VIN: [xxx] , mileage: 52,877. Recurrent failure in the cooling system and engine/transmission, affecting safety and use. Check engine light comes on and off intermittently, code p30c5 (coolant flow low). The coolant pump was replaced under warranty on March 20, 2025, at leson Chevrolet (harvey, la) with 26,621 miles (attached invoice), but the same issue persists 9 months later with "engine and transmission system" alert in mychevrolet app. This is the 5th failed repair for the same defect since purchase (August 2023). Previous repairs include transmission wiring/sensor (January 2024) and traction control/abs (December 2023). The vehicle is unsafe for daily 100-mile commute. Request investigation for potential recall. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
What component or system failed or malfunctioned, and is it available for inspection upon request? to my knowledge, which is limited on vehicle diagnosis, the engine valve body is having an issue finding a gear when starting from a stop. How was your safety or the safety of others put at risk? the vehicle engine will sputter and jolt forward and attempt to go to a higher or lower gear when approaching the stop . Has the problem been reproduced or confirmed by a dealer or independent service center?the problem is reproducible, but the dealership is stating I would need a check engine light to have it serviced or seen. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? no. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? no visible alerts of fault when issue occurs or thereafter.
From auto stop when engine turns back on it jerks me forward.
I have been having intermittent issues with a warning on dash says service safety retrain system vehicle will shut off on its own doesn't want to restart vehicle was taken to dealership for a TSB as well as the shutoff issue they had the truck 28 days said they diagnosed the truck could not duplicate my concerns I also explained the issue with display going out flickering brake lights etc, intermittent issue with btakes being hard then extremely soft, I even showed video that they can clearly hear me talking on they did not care. When I picked the truck up from dealership the mileage in was same as mileage out as noted on the paperwork and matches pictures I took they never drove the truck. On Wednesday June 4, 2025 while driving home I ended up running a stop sign and barely missing a car because truck shut off causing my brakes to not respond I was able to get it to stop just in time it was witnessed by a local law enforcement agency I showed the officer my truck would not start and pedal was unresponsive was told it had to be towed had a friend tow to my house. On Saturday June 14, 2025 while on my way to northern duchess hospital the warning came on the display and vehicle shut off I was able to get it off the road could not start it had to call for someone to drive me to the hospital upon release at 5am I had to call my brother to pick me up we got truck to start after 20 mins while driving it he informed me I had no brake lights turn signals or headlight the display was black no speedometer nothing had to call friend to tow again once at my house he started checking fuses found 4 melted fuses one was ecm the others were body control module and something else this truck has 7300 miles on it the problems are getting worse last time at dealership service manager stated he wasn't wasting more than 20 minutes on diagnosing anything. Other issues are windows going down on there own climate controls coming on by itself and air coming in by top of windshield.
Upper radiator hose rubber grommet failing at 22k. Had a severe coolant leak coming from top radiator hose blowing back onto hot motor which could have turned into a fire quickly. I was lucky! a lot of GMC canyons and Colorado's are all reporting the same problem around 22k miles. It is currently at grossman chevy old saybrook, CT for repair.
I was driving down the highway going about 75mph in the left lane. The engine quickly started going down through the gears as the engine was shutting down. I was able to get it to the right side in very heavy traffic. I had to be towed. It took a 5 day repair and replacement of the fuel pump power control module. Warranty.
The contact owns a 2023 Chevrolet Colorado. The contact stated while driving at an undisclosed speed, the heater did not function as intended. The vehicle was driven to the residence. The contact checked the fluids and noticed that the oil dipstick was completely dry. In addition, the contact investigated and noticed that the oil had leaked all over the surface of the oil pan. The contact stated that the oil change warning light later illuminated. In addition, the contact stated that the failure had occurred after leaving the dealer and an unknown recall repair was performed. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure but provided no assistance. The contact referenced a customer satisfaction program; however, the vehicle was not included. The contact was advised to contact the NHTSA hotline to report the failure. The failure mileage was approximately 49,900.
Upper radiator hoses are failing. Failed at 40k miles due to manufacturer defect of the part. Seeing owners complain about them leaking off the dealer lot and know 10+ that have had theirs fail around 30k miles.
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.
My infotainment system as well as my driver display system black out and does not have a fix for it. I have had to drive my truck with no speedometer no safety info or system. I use my truck for work. I have no clue even how much gas is in my truck. Everything is controlled through this system.
2 incidents. 1. The blind spot indication (driver side) gives false readings sometimes. Will light up at various times in clear weather with no vehicle next to me. Sensors checked and were clean. 2. The vehicle had a dead battery. It was jumped by roadside assistance. When started, the vehicle had a check engine light. I called onstar (hands free function built in) to diagnose the problem while driving to charge the battery. Onstar told me what it said and indicated I should take it to the dealer. When I attempted to merge onto ok-51 the vehicle suddenly stopped accelerating without warning causing me to nearly miss another vehicle while merging. When I looked down at the ip, a message came up saying vehicle limited to 62 mph. I wasn’t previously warned or told by onstar that this would happen (I was still talking to onstar when it happened and the customer service representative sounded surprised). I did not collide with the vehicle but the other vehicle had to take evasive maneuvers to avoid my unintentional slow merge.