2026 Chevrolet Colorado

On April 11, 2024, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE24011 after receiving complaints concerning a loss of brake assist in 2023 MY Cadillac Lyriq vehicles. These complaints allege a hard brake pedal, followed by a “Brake System Failure” message at start up or while driving. GM shared records regarding several internal investigations for loss of brake assist due to alleged spindle fractures in the eBoost system. GM has stated that in the event of a spindle fracture, anti-lock brakes (ABS), stability control, and traction control remain functional until the vehicle comes to a complete stop. At this point, ABS, brake assist, stability control, and traction control functions are lost. The loss of these functions causes the vehicle to set one of three Diagnostic Trouble Codes (DTCs) based on failed performance criteria for the Electronic Brake Control Module (EBCM). These DTCs, in turn, activate several driver alerts: an audible chime, a visual “Service Brake System” message in the display, and multiple illuminated Malfunction Indicator Lights (MILs) for the ABS, Traction Control, and Brakes informing the driver of loss of functionality. The vehicle speed will also be limited to 70 KPH (43 MPH). Since opening PE24011, ODI has continued to receive reports of loss of brake assist. Some of these reports describe symptoms inconsistent with GM’s description of a spindle failure. These reports allege an immediate loss of brake assist functionality as opposed to the loss occurring after the vehicle comes to a complete stop. The sudden loss of brake assist during a braking event could result in extended braking distance, which increases the risk of a crash or injury. ODI believes further analysis is necessary to assess the potential for failures in GM’s eBoost system to resulting in safety-related outcomes. At this time, ODI is aware of the following vehicles that are equipped with this eBoost system: 2023-2026 MY Cadillac Lyriq, Chevrolet Colorado, and GMC Canyon; 2024-2026 MY Buick Enclave, Envision; Chevrolet Blazer EV, Equinox EV, Traverse; Cruise Origin; and GMC Acadia; 2025-2026 MY Cadillac Celestiq and Optiq. ODI is also aware of 2024-2026 MY Acura ZDX and 2024-2026 MY Honda Prologue vehicles that were built with this system. The Acura and Honda vehicles were manufactured by GM in a joint venture with Honda, and will be included in the Engineering Analysis as peer vehicles. ODI is opening this Engineering Analysis to further assess the safety-related consequences of a failed eBoost system. In addition, ODI is expanding the scope of the investigation to encompass all GM vehicles that share this eBoost system. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

The contact owns a 2026 Chevrolet Colorado. The contact stated that while driving 40 MPH, there was an abnormal odor inside the vehicle. The contact stated that the failure occurred whenever the windshield washer was activated. The contact stated the ammonia odor was strong and caused the contact to become nauseous and have headaches. The vehicle was taken to the dealer, and the contact was informed that there was no resolution. The contact stated that the failure was a result of a flaw in the manufacturing design of the vehicle. In addition, the contact stated that the failure was a known failure with the vehicle. The manufacturer was contacted, and a case was filed. The failure mileage was approximately 40.

NHTSA ID

11775746

Incident

Sep 22, 2026

Mileage

40 mi

Complete brake system failure. Multiple error messages displayed just moments before the problem occurred.

NHTSA ID

11775367

Incident

Oct 26, 2026

On October 29, about one week after I took delivery of my new 2026 Chevrolet Colorado, the entire instrument panel failed while I was parking. The gauge cluster, infotainment/stereo display, LoJack system, and airbag system all shut off, and the airbag warning indicated the system was inactive. The failure lasted two days with no gauges and no working airbags, and nothing came back on after restarting the vehicle. I took the truck to the dealer (Bomnin Chevrolet) on October 30. The service department confirmed there is a problem but could not give an estimate for a repair. Mileage at the time of failure was approximately 200miles. Because the vehicle may be operating without functional airbags or instrument readings, I consider it unsafe to drive.

NHTSA ID

11774989

Incident

Oct 29, 2026

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.

NHTSA ID

11774917

Incident

Oct 28, 2026

Vehicle: 2026 Chevrolet Colorado Trail Boss, 4WD Crew Cab. Delivered new 3/29/26. Beginning in May 2026, the vehicle developed a steering column defect: play in the steering wheel, a catch or jerking sensation while driving and turning (particularly at low speeds and on rougher residential/city roads), a structural popping noise, and an accompanying dashboard rattle. Dealership staff advised the vehicle was safe to drive despite the confirmed defect, and I continued operating the vehicle with my family for approximately two months while a replacement part was on backorder. The vehicle has been repaired three times for this identical defect: - 5/5/26–7/3/26: intermediate steering shaft replaced; defect returned - 8/17/26: upper and lower intermediate steering shaft joints replaced; defect returned - 9/7/26–10/7/26: intermediate steering shaft replaced again. Dealership staff told me directly this repair was untested and that I would be the first to determine whether it holds up long term. The repair order's own mileage log shows only 18 total miles driven for the entire 30-day visit, including the post-repair verification test drive. No independent manufacturer field inspection was conducted before the vehicle was released back to me. Since picking up the vehicle on 10/7/26, I have noticed new symptoms: the vehicle occasionally pulls to the left when braking, and the steering feels unusually tight at times, as though the power steering is not fully engaging. A loaner vehicle (also a Chevrolet Colorado) provided to me by the dealership during an earlier repair exhibited the identical steering catch and popping symptoms as my own vehicle, suggesting this may be a defect affecting the platform rather than an isolated issue with my individual vehicle. I am filing this report due to the ongoing safety implications of a recurring, unresolved steering defect on a new vehicle, the manufacturer's acknowledgment that the most recent repair was unverified, and new symptoms

NHTSA ID

11770263

Incident

May 5, 2026

The contact owns a 2026 Chevrolet Colorado. The contact stated that while driving approximately 45 MPH and approaching a traffic light, the contact heard a loud popping sound, and the sunroof suddenly shattered. The sunshade was closed at the time of the failure. The contact stated that glass started blowing from the sunroof. The sunroof glass was shattered in a mushroom-shaped pattern and was fractured outward. The contact purchased plastic from a hardware store to temporarily cover the opening. The vehicle was taken to a local Chevrolet dealer, where the dealer was verifying the warranty coverage. The vehicle was scheduled to be repaired. The failure mileage was approximately 500.

NHTSA ID

11769792

Incident

Oct 1, 2026

Mileage

500 mi

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.

NHTSA ID

11768684

Incident

Jul 6, 2026

The contact owns a 2026 Chevrolet Colorado. The contact stated that the vehicle was taken to a body shop, where it was discovered that the vehicle had misaligned body panels and a frame that was improperly manufactured. The dealer was contacted. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 11,798.

NHTSA ID

11768534

Incident

Jul 23, 2026

Mileage

11,798 mi

This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3

This Preliminary Information provides diagnostic tips and guidance for situations where key fobs cannot be learned or programmed successfully.

This document assists GM dealer technicians with diagnosing torque converter concerns to ensure torque converter replacement is necessary. The torque converter part number will be placed on order restriction, and the technician will be asked to follow 25-NA-148 before requesting a part through PQC.

This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display

This Preliminary Information is to inform technicians to not replace any parts at this time and to use the work around provided. When a fix is available, this PI will be updated to a bulletin.

This preliminary information advises dealers that Engine Control Module designation E01 is on a ordering restriction through technical assistance.