2025 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.

I am reporting two brake-system failures involving my 2025 Chevrolet Colorado. Both involved brake-fluid leakage from the left-rear brake caliper, including a recurrence after that caliper had already been replaced under warranty. On May 27, 2026, after the truck had just been driven home, we loaded it for a camping trip with our granddaughter. When we started the vehicle to leave, multiple warning lights appeared and the truck had very little braking capability. The Chevrolet dealer documented DTC C05B0 and found that the driver's-side rear brake caliper had separated and was leaking brake fluid from the actuator side. The dealer replaced the left-rear caliper (GM part #13537065), added brake fluid, bled the system, and road-tested the vehicle. On October 19, 2026, approximately five months later, the truck displayed a "Service Parking Brake" warning. The dealer documented DTCs C060B and C2A21 and found brake fluid leaking through the left-rear caliper into the parking-brake actuator. The dealer again replaced the left-rear caliper with the same GM part #13537065 and also replaced the affected parking-brake actuator (GM part #13513581). I am concerned because the replacement caliper experienced another brake-fluid leak only five months after the first failure. The first incident resulted in very little braking capability, and we were fortunate it became apparent in our driveway rather than while driving. I am reporting this because of the serious safety risk of recurring brake-fluid leakage and diminished braking. I am aware NHTSA is investigating brake issues involving Chevrolet Colorado vehicles. I do not know whether these failures are related and am providing the dealer findings, DTCs and part numbers so NHTSA can make that determination.

NHTSA ID

11774141

Incident

May 27, 2026

Erratic operation. Indicator in side mirrors flickering with no object present. Dealer installed a new left side blind spot monitor which was tested and found to be defective, Have been waiting more than a week to have another one delivered.

NHTSA ID

11754936

Incident

Jul 23, 2026

The contact's husband owns a 2025 Chevrolet Colorado. The contact stated that after exiting a car wash tunnel and parking the vehicle on the side of the car wash building, the vehicle continued to roll forward at a high speed without warning. The contact used both feet and excessive force on the brake pedal to stop the vehicle; however, the vehicle continued to roll forward. The vehicle ran over the parking pillar and crashed into a brick column attached to the building. The vehicle continued to roll forward after the crash and eventually stopped once it rolled over the car wash road indentation. The contact reversed out of the car wash indentation and called her husband for assistance. After her husband arrived at the scene; the vehicle was driven to the residence without any further issues. The vehicle remained at the residence and was not yet diagnosed or repaired. The manufacturer was notified of the failure, and the contact was provided a case number. The failure mileage was approximately 111,817.

NHTSA ID

11745625

Incident

Jun 18, 2026

Mileage

111,817 mi

At 6700 miles, the following warning lights came on: Service Trailer Brake Service ESC Service Brake Assist Adaptive Cruise control unavailable. I brought the truck to the dealer. They read the codes and found a service bulletin. “6721 found service bulletin for code C055F vehicle needs a master cylinder/booster/ebcm parts ordered” They told me it was safe to drive but I refused to drive given what I found online about this issues. The vehicle took a week to fix.

NHTSA ID

11743987

Incident

Oct 20, 2025

Sunroof exploded outwards. On a sunny afternoon while driving on highway. No other vehicles around.

NHTSA ID

11741388

Incident

May 30, 2026

The infotainment system does not operate correctly. The screen where the backup camera and all other information is you can not view since the screen is black most of the time. That is also where the light switch is for headlights and such.

NHTSA ID

11729204

Incident

Feb 6, 2026

All electronic braking lights came on in truck @13040 miles dropped at dealership last Monday they believe it’s the master cylinder. Pending additional info

NHTSA ID

11728276

Incident

Mar 23, 2026

The upper radiator hose on some huge percentage of these trucks fail (mine has failed at just over 5k 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 10-14 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.

NHTSA ID

11725209

Incident

Mar 13, 2026

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

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

• Improvements to vehicle software updates

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

• Improvements to start reliability and reduced check engine light activation • Improvements to turbo system diagnostics • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating