2024 Chevrolet Colorado: ABS light or ABS activating

Filed Apr 20, 2026 · Brakes · PA · crash · 1 injury

The vehicle is registered to me; my mother was the driver at the time of the failure. At ~2,963 miles, the truck developed intermittent check engine and ABS warning lights. The dealer pulled DTC C058A (brake system control module) and P25A2. Per GM bulletin PIT6012A, the battery was replaced and a brake plunger motor sensor learn was performed. The same codes returned within weeks. The dealer then diagnosed internal failure of the brake master cylinder and reservoir, documented the vehicle as "unsafe to drive," and replaced both under warranty. The truck sat at the dealer over six weeks due to a nationwide parts backorder. Repairs were completed April 4, 2025. On May 2, 2025, at ~6,500 miles, the driver was traveling downhill on a city street in the rain at roughly 20 mph. The brake pedal suddenly became hard and resistant. Despite full-force pedal pressure, the vehicle could not be stopped. It entered an intersection, struck another vehicle, then struck a tree. Front and side airbags deployed; the vehicle was totaled. The driver sustained a concussion, broken finger, and severe back and knee injuries, was transported by ambulance, and required months of concussion treatment including vestibular therapy. The hard, resistant pedal is consistent with failure of the electronic brake boost assist (eBoost) system, leaving only unassisted hydraulic braking (roughly 4–5x normal pedal force). This matches other owner reports and the class action in Barron et al. v. GM LLC, which cites defective master cylinders with a missing internal cartridge seal on the same platform. The vehicle is no longer available for inspection. The driver was concussed with significant short-term memory loss at the scene; statements in the police report may not reflect the mechanical failure. Full police report available on request (exceeds 10 MB limit).

Filed Dec 12, 2025 · Brakes, Driver assistance · CT

Vehicle: 2023 Chevrolet Colorado Trail Boss Mileage: Approximately 14,000 miles I am submitting this complaint because the ABS braking system on my vehicle activates unexpectedly and causes a temporary loss of braking when driving over uneven pavement. When braking over potholes, bumps, or rough road surfaces at low to moderate speeds, the ABS system engages even though traction is available. When this happens, brake pressure is reduced to the point where the vehicle does not slow as expected. The ABS warning indicator flashes briefly, and there is a noticeable delay before normal braking resumes. This behavior has occurred multiple times in normal driving conditions on city streets, not during panic stops or slippery conditions. The issue feels most pronounced when approaching intersections or slowing in traffic over broken pavement, where consistent braking is critical. The momentary reduction in braking force significantly increases stopping distance and creates a safety concern. The vehicle has low mileage, has not been modified, and is maintained as delivered from the manufacturer. There are no warning lights remaining on after the event, and the issue appears to be related to ABS calibration rather than driver input or road conditions. This does not feel like normal ABS operation and gives the impression that braking is interrupted at the exact moment it is needed. Given the frequency and repeatability of the issue, I believe this represents a potential safety defect that could contribute to a collision, particularly in urban driving environments with uneven road surfaces. I am submitting this complaint to document the issue and to request that the ABS braking behavior on this vehicle be reviewed for safety.

Filed Jun 19, 2025 · Brakes, Driver assistance · VA

ABS check engine light came on after initially taking the vehicle in because of the brakes feeling weird and making noise. This similar issue has been experience by multiple users reported on a Chevy Colorado group page on facebook to include 2 cases of individuals, one with a Colorado and another with a GNC Canyon, both GM vehicles, that had their brakes fail while operating the vehicles. This was a concerning issue because, in my case, while I drove the vehicle, I was able to punch the brake pedal all the way to the floor while the vehicle was slowing down. The vehicle and part were inspected about 3 different times with the final time, and with video proof of an odd noise it was making, which then caused the dealership service department to actually check the brake pump which then they found to be faulty and needed replacing. This also took about a month and a half of wait time because the part was on backorder. I also spoke to Chevrolet directly where they did not seem to be aware nor cared at the fact I explained to them many owners experienced this same issue and did not acknowledge my concern for safety of the vehicle itself.

Filed Apr 19, 2025 · Brakes, Electrical · NV

Started the truck and got a Brake System Failure, Service ESC, Service Trailer Brake System, Traction Control, Forward Colission, ABS, Check Engine Light and Parking Brake Warning light flasing. Also the Auto Start Feature works less than 10% of the time.

Filed Nov 27, 2024 · Brakes · CA

On the afternoon of [XXX], I had an interesting incident in a parking lot while slowly pulling into a parking spot. As I began braking, the brake pedal suddenly sank to the floor, forcing me to engage the emergency brake to stop the vehicle. After restarting the truck, the pedal firmness returned, but I noticed a peculiar sound, likely originating from the ABS pump or solenoids. No warning lights illuminated on the dashboard, and no error codes were detected with my scanner. Additionally, I’ve observed that the front driver’s side wheel has significantly more brake dust compared to the passenger side. I brought this issue to the attention of the service advisor at Boulevard GMC in Signal Hill, CA. Boulevard GMC informed me that brake parts are currently on a nationwide backorder, and there is no estimated time of arrival for when GM will supply dealerships with replacement parts. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 24, 2024 · Brakes · CA

Component/system issue: Intermittent loss of power assist to brakes after auto start-stop startup. Safety Risk: Unable to use brakes normally. Requires hard brake pedal pumping to get vehicle to stop. Reproduced by others: No. Doesn't happen every time. It has happened a total of three times (so far). Inspected by manufacturer: Yes. The first time, the dealer found low voltage DTC set. Replaced battery. Second time, dealer found low voltage DTC (P 0562) set. They contacted GM TAC who provided a file to patch the radio software. Third time, other (possibly related) electronics issues were also present which caused the vehicle to enter limp mode every time it's driven. They've replaced the ECU and the accelerator pedal, neither of which fixed that issue. They are now awaiting a wiring harness from GM to see if that is the root cause. Hopefully it also fixes the intermittent loss of power brakes after auto start-stop startup. Warning lamps/messages/other symptoms prior to failure: No symptoms prior to the failure. Upon startup caused by auto start-stop feature, the symptoms are as follows: All warning lamps illuminate and several messages display on the instrument cluster screen about loss of ESC, ABS, traction control, collision avoidance, adaptive cruise control, and others. One by one, the warning lights go out within 1 minute, except ABS. Power assist for the brakes is not available while this light is illuminated. Within approx. 2 minutes, the ABS light goes out and brakes function normally again.

Filed Mar 28, 2024 · Brakes, Driver assistance · TX

Bought my son 16 year old a new truck, truck only has 517 miles on it. He was driving 45 miles/hour on street, dashboard warning lights all lit up ABS, Brake and Check Engine. Brakes failed. Was able to pull into a parking lot eventually but a very serious safety issue/concern and this truck should be recalled immediately.