2024 Chevrolet Blazer

Auto hold was on, radar cruise control was set and as I was merging in traffic a sharp smell of burning started. The cruise control refused to disengage until I parked the car in garage. Eventually burn smell ended but seems like brake was stuck while acceleration causing a burn smell. It seems like brake could get stuck to wheels perhaps when auto hold is on even when driving? Auto break hold is a feature which keeps the break on while car is stopped.

the car jumped/jerked like it was trying to change gears while accelerating and two times when at a complete stop at a light. The car was taken to dealership on Sep 2, 2025 and needed a full transmission replacement. The parts were on back order and the vehicle was not complete until November 20th of 2025

This morning, I stopped to open the gates at work, car was idling. When I got back into the car, put it in drive and started to slowly move forward the FORWARD COLLISION SYSTEM slammed on my brakes and lights flashing on my dash. I backed up...there was absolutely nothing in my way. This has happened numerous times, different places and while turning a corner at a very slow speed. Never nothing in the way. Will definitely be taking it in to have it checked now.

On October 2, 2026, while driving my 2024 Chevrolet Blazer EV AWD at approximately 55 miles per hour, I approached a stop sign while traveling downhill on a wet road. I had let off the gas and had slowed to about 35 mls per hour before I applied the break. The road was wet from rain, but I did not believe the vehicle was hydroplaning. They rain had stopped and roads were only moderately wet. I applied the brake pedal normally and continuously held the pedal down. I did not pump or release the brake pedal. The vehicle appeared to activate ABS. I could feel what seemed like repeated braking and releasing/pulsing while I continued holding the brake pedal down. Despite continuously applying the brake, the vehicle did not slow and stop as I expected and continued moving toward the stop sign. The car continued through the stop sign and the brake failure almost caused me to hit another vehicle. Once I was past the other car I turned onto Lakeview Heights and drove at about the same speed (35) and it did the same thing at the next stop sign. I did not intentionally test the ABS or attempt an emergency maneuver. This occurred during normal braking for a stop sign. The vehicle was being driven in Sport mode at the time. I subsequently took the vehicle to a Chevrolet dealership for diagnosis. The dealership performed diagnostic testing and reported that they found no diagnostic faults/codes. The problem was not reproduced during the dealership inspection. I am reporting this because I experienced an unexpected loss or significant reduction in braking effectiveness while the brake pedal was continuously applied. I am concerned about a possible intermittent braking/ABS/brake-assist problem.

The plastic cover on the shark fin antenna has fallen off the vehicle twice now. The second time was just 12 weeks after the first one was replaced at the dealership. The part fails because the plastic clips that hold it to the base are brittle and are easily damaged by the high speed air dryers in car washes. My concern is that if the clips get weakened in the car wash and then the plastic cover separates from the base while driving at highway speeds, there is a very real potential for this part to strike the windshield of the car following my vehicle. The part in question is GM Part Number 26537604. GM has issued a direct replacement to the original OEM part number, GM Part Number 26512283 which presumably has reinforced clips to prevent this problem.

Chevy Trunk opens automatically without key

The contact owns a 2024 Chevrolet Blazer. The contact stated that while driving 52 MPH, the brake pedal was depressed; however, the vehicle failed to stop as intended. The contact stated that the vehicle independently accelerated and there was an abnormal clicking sound. The brakes eventually responded, and the vehicle stopped. The contact stated that the failure lasted for approximately five miles. The contact's two minor grandchildren were inside the vehicle during the failure. The failure mileage was approximately 48,100.

My 2024 Chevrolet Blazer EV AWD has experienced two separate incidents involving sudden loss of propulsion without warning. First Incident – XXX While driving in [XXX], the vehicle suddenly lost propulsion without warning while I was in a turn lane in front of a medical center. Following the loss of propulsion, the Driver Information Center displayed warnings associated with the AWD system, shift system, and high-voltage system. The vehicle could not be driven or shifted and became disabled in the roadway, creating a potentially hazardous traffic situation. An expedited tow was required because of the location of the disabled vehicle. The vehicle was taken to a Chevrolet dealership in Novi, Michigan. I picked it up on XXX. I was informed that a vehicle-wide reprogramming had been performed, the vehicle had been updated with the latest available software, and the condition should be resolved. Second Incident –XXX Only 12 days after the vehicle was returned following the reprogramming, the vehicle experienced another sudden loss of propulsion without warning while my cousin was driving on [XXX]. Following this event, warnings were displayed indicating that the AWD system, Electronic Stability Control (ESC), traction-control system, and high-voltage system required service. During this incident, the vehicle could be shifted into Neutral. Good Samaritans pushed the disabled vehicle from the roadway into a nearby parking lot. OnStar was contacted, and the vehicle was towed back to the same Chevrolet dealership that had serviced the vehicle following the XXX incident. The vehicle has therefore experienced two sudden losses of propulsion within approximately two weeks, with the second event occurring only 12 days after a vehicle-wide software reprogramming intended to address the first event. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Since buying the car in 2024 I have experienced multiple incidents where the system hard brakes for no reason, including times while driving. The emergency recall on this vehicle was repaired last year and since that repair this issue has occurred 2 more times, once earlier in 2026 and then most recently as yesterday despite claims by GM the issue has been fixed. My daughter currently drives this vehicle and is afraid she is going to get into an accident because of this issue. I tried to initiate a buyback but due to the miles on the vehicle GM would only settle for 4k.

Vehicle: 2024 Chevrolet Blazer VIN: [XXX] Component: Engine Cooling System (Radiator) Description of Incident: On XXX the vehicle was brought in for a routine maintenance service at approximately 20,000 miles. During the inspection, technicians at Hamilton Chevrolet in Warren, Michigan discovered a premature radiator leak. The servicing technician noted that this is a common failure on modern Blazers due to a manufacturing material mismatch, specifically where the plastic end tanks meet the aluminum radiator core. This structural component failure poses a severe safety risk. A rapid loss of engine coolant can cause immediate engine overheating, thermal management failure, and a sudden loss of vehicle propulsion while driving at highway speeds, significantly increasing the risk of a crash. Corrective Action: The defect was located and the radiator was subsequently replaced under the factory warranty by Hamilton Chevrolet (Warren, MI). However, this failure occurred far too early in the vehicle's lifecycle, indicating a structural or material defect in the OEM radiator seams. Please investigate this issue, as premature cooling system failures on this model year present an ongoing safety hazard. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

There was a wreck up ahead, and two tow trucks with their emergency lights flashing were blocking the left two lanes. Traffic was stop-and-go due to the existing wreck. I was traveling in the lane to the right of the tow trucks as I approached. I stopped about 1–2 car lengths behind them. When traffic started to move, I began to move forward and advanced about a car length when the automatic emergency braking (AEB) activated and slammed on the brakes, even though the path in front of me was clear. The person behind me rear-ended me. Luckily, no one was physically hurt, but there is damage to our car that now has to be repaired, along with all the headache that brings. If this had happened at higher speeds, it could have resulted in serious injuries. My family’s safety and the safety of others are definitely at risk because of this phantom braking. I would welcome an inspection of the black box and AEB. Feel free to contact me if you can facilitate this. The vehicle has not been inspected by anyone yet. There were no warning lamps or messages prior to the phantom braking. However, this has happened previously; this is the first time it resulted in a wreck. From what I’ve seen online, this appears to be a common problem, and the dealership does not have a definitive fix.

The contact owns a 2024 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, the vehicle experienced phantom braking on four separate occasions. The Forward Collision Avoidance warning light was illuminated. The vehicle was taken to the dealer, but the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 40,000.

The car just stopped while I was driving. I was in an intersection. The car would not turn back on

Sudden catastrophic drive train failure while driving. Car stopped instantly and was totally immobilized. It had to be dragged onto a flatbed tow truck. It is at dealership now for evaluation.

The radiator had a crack that nobody located even though I had been smelling antifreeze since I purchased it at 24,000 miles just over a year ago. I brought it in for an oil change today because I was leaving town for the weekend tomorrow and now a hole had blown through the bottom of the radiator. Had this happened when I was in a remote area of the mountains without cell service this could have been a very big problem. Or had it blown while traveling up the mountain pass it would have put my life and others passing me on the road at risk. There weren't any warning lights on and the car never overheated. There weren't any outward leaks up until the hole was blown in the radiator. I have had it in several times for oil changes and there were never any visible leaks noted. Luckily my engine never blew because I've been driving with a cracked radiator for at least a year now.

While driving my 2024 Chevrolet Blazer EV, the vehicle suffered a sudden, complete failure of the power braking assist system. The failure was accompanied by a rapid cascade of three sequential dashboard warning messages in immediate succession: First Warning: "Service ESC" illuminated alongside the "Brake Park" warning light. Second Warning: "Brake Assist Failure. Press Hard to Brake. Speed Limited" illuminated with "Brake Park" remaining on. Third Warning: "Brake System Failure. 62 MPH Top Speed" illuminated with "Brake Park" remaining on. Immediately upon these warnings triggering, the power braking assist and emergency mechanical reserve failed completely. When pressing the brake pedal, the vehicle did not slow down, and the pedal failed to engage the brakes. To avoid a catastrophic intersection collision and bring the vehicle to a halt, I was forced to deliberately steer the vehicle into a concrete curb to use friction to stop the car. The vehicle is a total loss of braking safety and cannot be driven. Safety Risk: The sudden loss of braking assist creates an immediate crash hazard, as stopping distances are severely multiplied. Limiting a vehicle to a maximum speed of 62 mph while experiencing zero brake assist on active roadways places the driver and surrounding traffic in extreme danger.

"While attempting to merge onto a high-speed freeway on-ramp, the vehicle suffered a sudden and catastrophic loss of engine power, rendering it unable to accelerate and creating an immediate life-threatening safety hazard. The vehicle was restarte and driven home, where an onboard diagnostic check revealed an emissions system failure. The dealership later confirmed that BOTH close-coupled catalytic converters on the 3.6L V6 were damaged. The check engine light was a solid light. Not flashing.

The contact owns a 2024 Chevrolet Blazer EV. The contact stated that while driving approximately 45 MPH and depressing the brake pedal to reduce speed, the vehicle failed to respond as intended and crashed into the rear end of a second vehicle at approximately 5 MPH. Moments later, a third vehicle crashed into the rear of the contact's vehicle. The contact was not injured during the crash. The occupant of the third vehicle sustained an unknown injury. A police report was filed. The vehicle was towed the residence and was later towed to a repair shop. The third vehicle was towed to an undisclosed location. The local dealer was not contacted. The cause of the failure was not determined. The manufacturer was notified of failure. The failure mileage was 5,500.

I am reporting a potential safety defect involving unintended automatic emergency braking/forward collision warning/brake-control behavior, reverse automatic braking, parking brake behavior, and driver-assistance/sensor calibration. Incident XXX ~11:15 AM, [XXX] driving 2024 Chevrolet Blazer EV ~20–25 mph on/near [XXX]. Vehicle displayed red collision alert and abruptly braked hard although the lane was clear; only a car was parked in a driveway on the right. Sudden braking created serious risk of rear-end collision/loss of control. Vehicle used for family transportation; toddler (~30.8 lb) had been in vehicle ~10 minutes before and family includes blind/visually impaired passenger. History of unwanted reverse emergency braking ~every 45 days: Jan 2026 near Crust Pizza Woodforest (backing up) and March 2026 at H-E-B 7988 FM 1488 Magnolia (backing out), jolting child in rear-facing car seat. Prior service at Keating Chevrolet Nov 12, 2025 (including recall/service for Unintended Parking Brake Engagement N252503010 and missing chassis harness plugs update) did not resolve unwanted braking. After June 10, AEB/front pedestrian braking/intersection collision braking were disabled as temporary safety mitigation. Vehicle removed from daily family use, available for inspection, and I request NHTSA review. Any inspection should preserve relevant braking/parking/AEB/forward collision/sensor data before any reset/update/repair. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2024 Chevrolet Blazer. The contact received notice of NHTSA Campaign Number: 25V433000 (Parking Brake). The contact stated that on several occasions, when he and his wife put the vehicle in reverse (R), the vehicle did not reverse as intended. He observed an "activate park brake switch" message that appeared. Additionally, on one occasion when his wife put the vehicle into reverse (R), the vehicle abruptly stopped but continued to work normally shortly after. The vehicle was towed to a dealer where it was diagnosed that the harness needed to be rerouted and anti-abrasive tape installed. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 8,600.