Chevrolet Colorado check engine light comes on

Filed Nov 1, 2026 · Brakes · NH

At just over 700 miles on this vehicle, I was sitting in a parking lot and started the vehicle. Suddenly the brake pedal dropped, a Service ESC warning came up on the dash, and the engine light came on. In the Chevrolet app, it has a vehicle status warning "Antilock braking system". Thankfully I was sitting in a parking lot, or it could have been MUCH worse, for me. The vehicle is at the dealer for repairs, but their diagnostic revealed that the brake master cylinder failed.

Filed Oct 28, 2026 · Fuel system · 22,000 miles · TX

The contact owns a 2024 Chevrolet Colorado. After starting the vehicle, the engine ran for several seconds before the vehicle unexpectedly shut off. The check engine warning light illuminated, and the word "Key Fob" was displayed while the key fob was in the contact's hand. The vehicle failed to restart and made a clicking sound. An independent mechanic diagnosed the vehicle with fuel pump module failure. The fuel pump module was removed and cleaned; however, the failure reoccurred four months later. The contact purchased a new fuel pump module and the mechanic installed the part. The manufacturer was notified of the failure by phone. The failure mileage was approximately 22,000.

Filed Oct 21, 2026 · Engine · IN

The engine malfunctioned, specifically the 4 camshaft actuator solenoid valves, making the car unable to safely drive. The check engine light came on, likely indicating the car was unsafe to drive. GM issued GM Special Coverage N232430470 covering 2020 Colorado's with a 3.6L V6 engine for the Bank 2 exhaust camshaft actuator solenoid up to 15 years/150,000 miles. This was confirmed by a Chevy dealership. The vehicle was not inspected by the manufacturer, police, or insurance representative. My check engine light first came on 09/05/26, however, the check engine light did disappear later in the week. It came on again 09/27/26, so i decided to have the car inspected, despite the fact that the check engine light later went away.

Filed Oct 3, 2026 · Engine, Transmission · OH

The vehicle developed a rapid and moderate shudder followed by "Check Engine", "Service Traction Control", "Service ESC" messages and associated icons on the driver display. The shudder happened a second time within approximately 30 seconds and the engine lost power followed by "Reduced Power Warning" message. I engaged the emergency flashers and limped to the nearest side road. I had to stop on the road because of no shoulder. I waited there while assessing the situation and eventually was able to drive the short distance home. I disconnected the battery to reset the PCM. This action temporarily cleared the fault code and check engine light. The first dealer said it couldn't do anything without a fault code. A second dealer said it was unable to duplicate the malfunction. Two weeks later the vehicle began to shudder on a busy interstate, with the same warning lights and messages and had to pull off the interstate. It happened once more on the way home. The dealer duplicated the issue. It took them over 30 days with multiple repair attempts. The dealer replaced all four fuel injectors, fuel injector wiring harness, Engine Control Module (ECM), and wiring between the ECM and another connector. The dealer had to reach out to GM's Technical Assistance Team (TAC) to get it back on the road again. Approximately 8 weeks later, the vehicle began to shudder again, this time only while travelling up hills. There has not been any messages or warning lights associated with this event. The vehicle was taken back to the dealer where is has been now for almost a week with no follow-up on the diagnosis or repair status. These events compromised safety and we were put at risk due to the sudden lack of power while in traffic, maintaining control of the vehicle while trying to understand the situation, and the possibility of other drivers adversely reacting to these events.

Filed Sep 21, 2026 · Brakes, Driver assistance · UT

After shifting to drive the vehicle had no brakes. A week or so earlier the check engine light came on. Messages on the screen said brake system failure along with other messages. Took to dealership, an update was installed. Last Wednesday engine light reappeared with the same messages but didn’t have time to return it to the dealership so parked it until today. Today was the brake failure. Returned to dealership, they replaced the battery and said the brake issue is fixed. I’m not convinced this fixed the issue and believe this could get someone seriously injured or killed.

Filed Sep 4, 2026 · Brakes · FL

On September 4, 2026, I experienced an extremely serious and frightening braking failure while driving my 2020 Chevrolet Colorado 2.5L. I was driving my granddaughter to school and was pulling into the school's carpool/drop-off area at approximately 20 mph. This was an especially dangerous location because children, parents, vehicles, and school personnel were in the immediate area. As I attempted to slow and stop the vehicle, the brake pedal suddenly became extremely hard and the vehicle would not stop normally. The dashboard displayed “Service Brake Assist,” and the check-engine light illuminated. I pressed the brake pedal, but the vehicle continued moving. Realizing that the normal brakes were not stopping the truck, I engaged the emergency/parking brake. The emergency brake slowed the vehicle somewhat, but even then the vehicle did not come to a complete stop. I ultimately had to place the vehicle in PARK to get it stopped. Fortunately, I was traveling at a low speed and was able to prevent the vehicle from striking a child, pedestrian, another vehicle, or other property. My granddaughter was also inside the vehicle at the time. This was an extremely frightening situation that could very easily have resulted in catastrophic injuries or death. The fact that this occurred in a school carpool/drop-off area surrounded by children makes the seriousness of this failure especially concerning. There was no reasonable warning that I was about to lose normal braking assistance. I am reporting this incident because I believe this vehicle may have experienced a serious safety-related defect involving the braking/brake-assist system. I am requesting that this incident be documented and that the federal safety agency investigate whether other owners of 2020 Chevrolet Colorado vehicles, particularly those equipped with the 2.5L four-cylinder engine, have experienced similar sudden losses of brake assist or braking ability.

Filed Sep 1, 2026 · AR

I bought this vehicle late June 2026 and it is currently September 1 2026 and last week I encountered a check engine light. Its already having coolant issues. Way too early for something like this. Only 64,000 miles.

Filed Aug 17, 2026 · Steering · MO

I am submitting this complaint regarding a serious safety defect involving my 2015 Chevrolet Colorado. While I was driving the vehicle, it suddenly lost power steering assist. The steering wheel immediately became extremely heavy and difficult to turn, requiring significantly more physical effort to control the vehicle. This sudden loss of steering assistance created a dangerous situation for me, my passengers, and other motorists. The failure occurred without warning and substantially affected my ability to safely steer and maneuver the vehicle. A sudden loss of power steering is particularly dangerous when making turns, maneuvering at low speeds, or attempting to avoid another vehicle or obstacle. What is especially concerning is that the failure experienced by my vehicle appears to match the defect described in General Motors Safety Recall N202325410, the federal safety agency Campaign 21V‑213, concerning loss of power steering assist in certain 2015 Chevrolet Colorado and GMC Canyon vehicles. the federal safety agency recall documentation states that affected vehicles may experience a loss of power steering assist while starting or driving because of a poor electrical connection within the steering gear assembly. The recall specifically explains that when power steering assist is lost, the vehicle reverts to manual steering and requires substantially greater steering effort, particularly at lower speeds. the federal safety agency and GM identified this condition as a safety defect because it can increase the risk of a crash. My vehicle experienced the same symptoms described in the recall: Sudden loss of power steering assistance while driving. The steering wheel became heavy and difficult to turn as the vehicle reverted to manual steering. A warning chime occurred. A warning message/malfunction indicator appeared on the dashboard. The loss of power steering made the vehicle substantially more difficult

Filed Aug 13, 2026 · Engine · CA

a/c control knocks out tempter senor and gauge goes to zero and check engine light comes on, gas mileage goings to hell, turn off engine clutch fan runs for several minutes, can still touch water hoses by hand and not even hot. This is a big safety problem because I'm looking at the gauge and now causing more smog! Chevrolet Merele Stone in Porterville CA had it all day reporting A GM Strat sticking ,it was a brand new gm delco and senor and still doing it . It's a $1000.00 to repair itThey had to jump start my truck went picking it up. tried to charge the battery over night but dead battery, had to replace it $250.00 expense, and $189.00 to denoised. Called GM for a appointment in Visalia to check the problem 42 mile on way from home and showed up to No APPOINTMENT!

Filed Aug 7, 2026 · Engine · 36,500 miles · WY

The contact owns a 2020 Chevrolet Colorado. The contact stated that while reversing out of the driveway, the check engine warning light illuminated. The failure recurred while driving 65 MPH. The vehicle was taken to AutoZone, where DTCs P0024 and P0014 were retrieved, indicating exhaust camshaft position system performance issues for Bank 2 and Bank 1. The contact associated the failure with GM Special Coverage Number: N232430470 (Camshaft Position Actuator Valve Solenoid - Bank 2 (Left Side) Exhaust). The vehicle was then taken to the dealer, where the diagnostic result was confirmed. The dealer swapped the camshaft position sensor actuators between both banks and cleared the codes. The contact was advised that the cause of the failure would be determined if the diagnostic trouble codes returned. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in the special coverage. The failure mileage was approximately 36,500.