2021 Chevrolet Trailblazer brakes problems

Filed Nov 2, 2026 · Brakes · IL

I am filing this complaint regarding a serious and potentially life-threatening braking malfunction involving my 2021 Chevrolet Trailblazer RS. While actively driving the vehicle, three separate warning messages suddenly appeared on the dashboard: Service Power Steering Service ESC Brake System Failure At approximately the same time, the brake pedal suddenly became extremely hard. I had to apply excessive physical force to the brake pedal in an attempt to slow and stop the vehicle. The vehicle did not respond as expected when braking. I nearly crashed because I could not stop the vehicle normally. This malfunction occurred unexpectedly while the vehicle was being driven. It was not an issue that occurred when starting the vehicle. The sudden loss of normal braking assistance created an immediate and extremely dangerous situation. A driver should never have to wonder whether their vehicle will be able to stop when the brake pedal is applied. 2. Previous Dealership Visit and GM Engineering Involvement I previously brought the vehicle to the dealership because of this same braking problem. GM engineers became involved and instructed the dealership to address a computer ground connection and perform a software update to the brake module. I paid approximately $200 for this attempted repair. Unfortunately, the very next morning after picking up the vehicle, the exact same braking malfunction occurred again. The fact that the problem returned the morning immediately following the repair raises serious concerns that the underlying safety defect was never properly identified or corrected. 3. Additional Repair Estimate After the problem continued, the dealership presented me with a repair recommendation totaling approximately $3,094.44. continued below

Filed Oct 3, 2026 · Brakes, Driver assistance · GA

ABS brake system failed causing breaking to surge and not work correctly and not stop like it should resulting in having to have the ABS module and pump replaced at an extreme cost. With no clear cause and using the same parts this is likely to happen again. Had to be taken to the dealer because it required special software and bleeding procedure that a local shop wasn't able to do. The dealership stated that this should probably be covered soon in a recall that this was a known problem and they have had quite a few issues with this ABS pump assembly.

Filed Jun 5, 2026 · Brakes, Driver assistance · CA

While driving on Thursday, June 4, 2026, the vehicle experienced a sudden and complete failure of the electronic braking/power brake assist system. Simultaneously, multiple safety warnings illuminated on the dashboard display, including a persistent service wrench icon, a traction control warning light, and a lane-keep assist indicator light. Due to the loss of brake assistance, the vehicle was unsafe to operate and had to be towed/driven directly to a licensed dealership for emergency diagnosis. The dealership technicians subsequently inspected the vehicle and reported that the entire electronic braking system had suffered a total failure and is completely non-functional. Despite multiple technical service bulletins and recalls issued for similar vehicle builds regarding electronic brake boost interruptions and mechanical brake vacuum pump failures, I am being forced to pay for these critical safety repairs out of pocket. A sudden loss of braking power poses an immediate crash hazard, and I am filing this report to urge the federal safety agency to investigate why this manufacturing defect is not covered under an active safety recall for this specific vehicle configuration.

Filed Apr 29, 2026 · Brakes, Electrical · 75,000 miles · KY

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while driving approximately 40 MPH, the vehicle stalled. During the failure, several unknown warning lights illuminated, and the vehicle was jump-started. The Auto START/STOP function was disabled for the vehicle to operate properly. The vehicle was inspected by an independent mechanic; however, the failure could not be duplicated. The contact replaced the battery, and the failure was almost resolved. Additionally, while depressing the brake pedal, the vehicle failed to stop as needed. The issue was not diagnosed or repaired. The contact stated that while starting the vehicle, the RPM was abnormally elevated, and the vehicle jerked abnormally while shifting gears. The manufacturer was not notified of the failure. The vehicle was not diagnosed or repaired. The approximate failure mileage was 75,000.

Filed Mar 24, 2026 · Brakes, Electrical · RI

When stopped at a red light & the light turns green & I accelerate, the vehicle does not move. It makes a loud noise and jumps. This happens way too many times. There’s also an issue with the brakes, when you press on them, you can hear something grinding, which should not be happening because I bought the car brand new. Also the brakes have always been super squeaky, which is very frustrating because they should not be with a brand new car once again. The engine light goes on and off randomly and doesn’t say anything.

Filed Mar 9, 2026 · Brakes · 135,884 miles · TX

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while driving approximately 70 MPH, the brakes became inoperative. The message "Brake Failure - Speed Reduced to 53 MPH – Service Required" was displayed on the instrument panel. The vehicle was taken to a dealer; however, the dealer stated that the vehicle could not be diagnosed because diagnostic tests were available only by appointment. The dealer informed the contact that the computer software needed to be reset to drive the vehicle back to the residence. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and provided the contact information about a recall; however, the VIN was not under recall. The failure mileage was approximately 135,884.

Filed Feb 24, 2026 · Brakes · OH

Shift to park. Vehicle will not shut off. Also trying to start vehicle having to repeatedly push brakes down hard and push to start before finally starting. I bought this vehicle with 0 miles this has been an on going on and off problem since around 20000 miles have been put on.

Filed Oct 27, 2025 · Brakes, Electrical · TX

There is a faulty sensor on this car that does not allow the car to be properly parked and gives the error message "Shift to park" on the dashboard. You have to turn the car back on and mess with the shifter multiple times to get it to register that it is park. This usually takes about 10 attempts every time you need to park the car. There are other reports regarding this exact issue on this car that further validates that this issue is relevant and needs to be addressed through a recall.

Filed Sep 5, 2025 · Brakes, Electrical · MN

While driving, a service warning came on that reads "Service Power Steering" - when that came on, the brakes ceased to work properly and required significant force, causing a big delay in braking. It is not safe to drive due to the limited braking. This mirrors the recall situation for other 2021 Trailblazer models with the interrupted brake sensor.

Filed May 3, 2025 · Brakes · GA

Getting error message for shift to park not found when vehicle is in park. Chevy already has a recall for this but my vin is not one showing it is affected. Vehicle is at the dealer now for diagnosis and repair.