Chevrolet Trailblazer engine failure problems

Filed Nov 5, 2026 · Engine · 71,438 miles · NM

The contact owns a 2023 Chevrolet Trailblazer. The contact stated that after refueling the vehicle and departing the fueling station, the vehicle stalled in the roadway and failed to accelerate. The vehicle was towed to a nearby parking lot. The contact stated that the engine failed to accelerate or rev above 5 RPM. The failure mileage was approximately 71,438.

Filed Nov 2, 2026 · Engine, Steering · MI

I am filing this complaint regarding a serious engine failure in my 2021 Chevrolet Trailblazer LS that occurred while I was driving. While driving, the vehicle displayed the warning message “Engine Power Reduced” and I experienced a loss of power steering. Approximately 30 seconds after these warnings and symptoms appeared, the engine failed and I was stranded. The vehicle became inoperable. The sudden loss of engine power and power steering while the vehicle was in motion created an extremely dangerous situation. The vehicle could no longer be safely operated, and I was left stranded after an abrupt failure while driving. This vehicle has experienced recurring engine-related problems since approximately 30,000 miles. Despite previous repair attempts and ongoing concerns, it has now suffered a severe engine failure. The dealership’s diagnostic report states that the engine died and would not crank or start. The technician diagnosed a shredded or failed timing belt that caused the engine to jump timing. The report further documents internal engine damage, including piston-to-valve contact and exhaust-side rocker arms displaced from the valves/lifters. The dealership recommends replacement of the complete engine assembly. The estimated cost to replace the engine is approximately $6,200. I contacted General Motors regarding this failure. GM has offered to contribute only 10% toward the repair cost, leaving me responsible for the overwhelming majority of the expense despite the vehicle’s history of recurring problems. I am concerned that this failure may represent a serious safety defect. Other owners of the same vehicle have reported similar engine-related problems.

Filed Apr 16, 2026 · Engine · TN

While driving down the interstate my 2021 Chevy Trailblazer suddenly flashed "Battery Saver Mode" on the dash and shut off completely. I was able to coast to the side of the road and call for help. This was a MAJOR safety issue as my 4 year old son was riding with me and we could've caused or gotten into a serious accident. There were no previous warnings and no Check Engine Light came on prior to it shutting off--I had been having no issues. The car will not turn on and when attempting to, it makes a screeching noise. I had to get it towed to a local service center who stated my car has "catastrophic engine failure". They advised the issue could be either "timing chain or a dropped valve"--unable to confirm until they take the engine apart completely. They denied issues with the battery or starter and said the engine was completely blown. There was less than 120k miles on it and i kept up with maintenance.

Filed Jan 16, 2026 · Engine · VA

My 2024 trailblazer lt's engine light came on about a month ago. I took it to a local dealership and they said it was caused by CCND. Diagnosed code P0128 in pass/fail status. They test drove it to get light to come on and it was unable to duplicate it. They cleared the codes. A month later it came back on. I took it to my dealership and they said they have to take the entire front end off to replace the engine coolant bypass valve. They said that the electronic component was going bad. This car isn't even 2 yrs old. This should not be happening.

Filed May 25, 2025 · Engine · FL

My 2024 Chevrolet Trailblazer ACTIV with 26,000 experienced complete engine failure while driving. Palm Chevrolet said my Trailblazer had “internal engine failure” and needs to be replaced.

Filed Apr 30, 2025 · Engine · AL

Engine failure. “Low engine power” mechanic read code as turbo failure.

Filed May 19, 2024 · Transmission · MN

On 7/2023, my timing chain broke causing shards of metal to get in the engine. Engine replaced with new engine. When I received car back, started having issues with transmission. Now transmission needs replacing.

Filed Dec 22, 2015 · Steering · 90,000 miles · CA

Tl* the contact owns a 2006 chevrolet trailblazer. While driving approximately 30 MPH, the power steering seized without warning. The failure recurred numerous times. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The VIN was unknown. The approximate failure mileage was 90,000.

Filed Oct 14, 2015 · Engine · 148,000 miles · NJ · crash · fire

Tl* the contact owned a 2002 chevrolet trailblazer. While driving at approximately 65 MPH, there was an abnormal noise and smoke appeared from the hood. The vehicle suddenly caught fire. A police and a fire report were filed and no injuries were reported. The fire was extinguished by the fire department. The vehicle was towed to an independent mechanic where the engine was replaced. On another occasion, while driving at approximately 40 MPH, the contact attempted to change lanes and another vehicle attempted to make a u-turn resulting in the contact crashing into the driver side of the vehicle. The air bags failed to deploy. The hood caught on fire. The fire was extinguished by an individual. A police and a fire report were filed and no injuries were reported. The vehicle was destroyed. The manufacturer was not notified of the failure. The approximate failure mileage was 148,000.

Filed Oct 13, 2015 · Brakes, Driver assistance · 136,000 miles · MA

Tl* the contact owns a 2007 chevrolet trailblazer. While driving at 30 MPH, the service traction control light illuminated on the instrument panel. The brakes seized when the contact attempted to stop the vehicle. The contact stated that the failure occurred intermittently and on a previous occasion. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 136,000.