2023 Chevrolet Blazer Owner Complaints

I am reporting a recurring safety issue with the Forward Collision Alert/Automatic Emergency Braking system on my 2023 Chevrolet Blazer 2LT. The vehicle frequently activates the Forward Collision Alert when there is no vehicle, pedestrian, or other obstruction in front of me. The red collision warning will illuminate and the system will beep even when the roadway is clear. More concerning, on three separate occasions the vehicle has unexpectedly applied the brakes extremely hard while I was driving in traffic despite there being no obstacle or imminent collision. The most recent incident occurred on August 11, 2026. I was making a turn through a busy intersection when the Automatic Emergency Braking system suddenly activated and applied the brakes extremely hard. There was no vehicle, pedestrian, or obstruction in my path that would have required emergency braking. The sudden braking occurred while I was in the intersection and created a serious risk of being struck by surrounding traffic. The braking force was severe enough that my seat belt restrained me very hard and caused an injury to my chest and flew me forward into the steering wheel while also risking the vehicle behind me to almost slam into me. This was not an isolated occurrence. This is the third time the vehicle has unexpectedly applied the brakes hard while I was driving in traffic. In addition to these three braking incidents, I have experienced frequent false Forward Collision Alerts where the red warning and audible alert activate when nothing is in front of the vehicle. I am concerned that the Forward Collision Alert/Automatic Emergency Braking system is malfunctioning and could cause a collision by unexpectedly stopping the vehicle in moving traffic. I am requesting that this recurring safety issue be documented and investigated.

NHTSA ID

11756366

Incident

Aug 11, 2026

The vehicle’s radiator developed a coolant leak that was discovered and confirmed by the dealership during a routine oil change, tire rotation and state inspection. There were no warning lights, warning messages prior to the dealership discovering the leak. The radiator required replacement. The dealership also told me that they had the replacement radiator on hand because this type of radiator failure had been occurring fairly often with this type of vehicle. The radiator failure presented a potential safety concern because a coolant leak can worsen without warning and result in a sudden loss of coolant, engine overheating, or vehicle breakdown while driving. Because there were no warning lamps or other symptoms before the leak was discovered, we may not have had any indication that the cooling system was failing. The problem was confirmed by the dealership during inspection, and the dealership determined that the radiator was leaking and needed to be replaced. The vehicle/component was inspected by the dealership. No manufacturer, police, or insurance inspection has occurred, to my knowledge. There were no warning lamps, messages, overheating, or other noticeable symptoms prior to the dealership finding the leak. The vehicle is only three years old, with 39000 miles on it at the time of the failure. I am reporting this because a radiator failure at such a young vehicle age, particularly one that develops without any warning to the driver, could potentially create a safety hazard if the coolant loss becomes severe while the vehicle is being operated. I’ve seen many complaints in online forums that this is an ongoing issue with these radiators used by Chevy. It seems the replacement radiators are having the same issues. Why can’t something be done? Dealership information: #1 Cochran Chevrolet Cranberry [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11754268

Incident

Jul 11, 2026

Odometer Fraud. The contact purchased a 2023 Chevrolet Blazer. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of the purchase the vehicle mileage was 57,692. It was discovered using the Kelley Blue Book/Experian that in 2022 vehicle was listed for sale with mileage of 57,705, and in 2023 same vehicle was listed with 23 miles.

NHTSA ID

11752425

Incident

Jul 23, 2022

Mileage

57,705 mi

"I am the owner of a 2023 Chevrolet Blazer RS. The digital odometer and speedometer screen intermittently crashes and goes completely black for 15 to 20 seconds while the vehicle is in motion on public roads. This creates an immediate safety hazard as I am left with zero knowledge of my current speed. General Motors has acknowledged this specific software stability bug under Technical Service Bulletin 22-NA-023 but refuses to fix the issue due to the vehicle being 9 days past its 3-year calendar warranty, despite having only 32,400 miles." I contacted your GM agent @ 800-222-1020 and was told its out of warranty sorry, that is horrible service espeacially for a safety issue and a 55,000 vechicle that only has 32,400 miles

NHTSA ID

11750847

Incident

Jul 16, 2026

The contact owns a 2023 Chevrolet Blazer. The contact stated that while driving at various speeds, the vehicle hesitated while depressing the accelerator pedal. There was no warning light illuminated. The vehicle was taken to the dealer on several occasions to be repaired; however, the dealer was unable to duplicate the failure or determine the cause of the failure. The contact stated that the dealer performed a transmission fluid flush; however, the failure persisted. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was approximately 25,000.

NHTSA ID

11746026

Incident

Aug 1, 2023

Mileage

25,000 mi

The contact owns a 2023 Chevrolet Blazer. The contact stated that while driving 10 MPH and pulling into a parking lot, the sun gear and the drive shaft fractured. The vehicle became inoperable. The vehicle was pushed to a safe place. The check engine warning light illuminated after the failure. The contact associated the failure with NHTSA Campaign Number: 23V172000 (Power Train). The vehicle was towed on a flatbed to the local dealer. The vehicle was not diagnosed or repaired. The dealer provided an estimate for the transmission replacement. The manufacturer was contacted and confirmed that there was no recall coverage on the VIN for the failure. The manufacturer referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 107,000.

NHTSA ID

11745894

Incident

Jun 21, 2026

Mileage

107,000 mi

The contact owns a 2023 Chevrolet Blazer. The contact stated that while driving, a code appeared on the dashboard P0128. When the vehicle's engine was switched off, the engine cooling fan continued to run. Warning light stating the steering would be disable.; however power steering was not lost. The vehicle was taken to a dealer where it was diagnosed with a thermostat failure. The manufacturer was notified of the failure. The approximate failure mileage was 48,000

NHTSA ID

11740828

Incident

May 20, 2026

Mileage

48,000 mi

Re: Vehicle Safety Defect Complaint – 2023 Chevrolet Blazer To Whom It May Concern, I am submitting a formal safety defect complaint regarding my 2023 Chevrolet Blazer. This vehicle has exhibited multiple system failures that present a serious risk to driver safety and public roadway safety. The vehicle was purchased new on July 20, 2023. Beginning on April 21, 2025, at approximately 27,610 miles, the vehicle developed a progressive defect initially presenting as oil-related issues. Despite multiple repair attempts, the condition worsened and required a full engine replacement in January 2026. Following the engine replacement, the vehicle continued to experience critical safety failures, including engine stalling, reduced engine power warnings, and electronic stability control (ESC) alerts. On April 26, 2026, the vehicle experienced a driver assistance system malfunction in which it attempted to steer off the roadway. I was forced to manually disable the system to maintain control of the vehicle. On April 27, 2026, the vehicle exhibited a fuel system failure, including fuel leakage and fuel odor, along with multiple simultaneous warning indicators: • Reduced Engine Power • Service ESC • Steering Assist Reduced / Drive with Care • Power assist driver system disabled This combination of failures presents both a fire hazard and a loss-of-control risk. Additionally, I was informed by the dealership that a high-pressure fuel line, a one-time-use component, was not replaced during the engine installation. This raises concerns regarding improper repair and continued unsafe operation of the vehicle. The vehicle has undergone multiple repair attempts and a major powertrain replacement, yet continues to present serious safety concerns. Due to these ongoing issues, I do not feel safe operating this vehicle. I respectfully request that NHTSA review this matter for potential safety defects that may impact other vehicles of the same make and model.

NHTSA ID

11734585

Incident

Apr 27, 2026

My vehicle makes a clunk noise when the vehicle is in motion and i press on the accelerator it also makes a little jerk. This mainly happens @ low speeds and on a incline hill. There some type of oil or grease stains where the cv axle goes into transmission. ive felt my vehicle with less power and pulls to the left. Took the vehicle to chevrolet and they said they couldnt duplicate the issue or the oil leak.

NHTSA ID

11731998

Incident

Apr 1, 2026

Rear brake automatic parking brake motor locked rear wheels. Dealership diagnosed and repaired at my cost. Service parking brake light illuminated and rear brakes locked not allowing vehicle to be moved. After a few restarts brakes released.

NHTSA ID

11729054

Incident

Apr 2, 2026

The vehicle has turned off twice while driving. Endangering the safety of everyone in the vehicle

NHTSA ID

11723647

Incident

Mar 10, 2026

The radiator developed a leak at around 36k miles and needed to be replaced. My understanding is that this is an ongoing problem with this vehicle.

NHTSA ID

11720888

Incident

Nov 12, 2025

My bright lights do not go off when oncoming vehicles or vehicles in front of me are close and when they do dim they go on and off. People flash their brights at me causing me not to be able to sleep and this happens even when they turned off of auto. Another item of concern is that the car would lock and unlock and the interior lights would go on and off. This was fixed but it was a line under the front that was not soldered together at the manufacturer is what the Chevy dealership stated.

NHTSA ID

11715738

Incident

Oct 1, 2025

The contact owns a 2023 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed with no vehicles or objects nearby, the Forward Collision Avoidance system activated, and the Automatic Emergency Braking System engaged and brought the vehicle to a complete stop. Upon driving off, the vehicle then jerked and jolted. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who informed the contact that the vehicle functioned as intended during the time in the Service Center. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 20,000. The VIN was not available.

NHTSA ID

11700596

Incident

Nov 20, 2025

Mileage

20,000 mi

ON SEPTEMBER 10, 2025 THE TRANSMISSION FAILED FOR THE 3RD TIME WITHOUT WARNING. THIS TRANSMISSION ONLY LASTED ABOUT 5,500 MILES. WHEN IT FAILS, IT SIMPLY DOES SO WITHOUT WARNING. WHILE DRIVING IT WLL START SHUDDERING AND WHEN YOU STOP IT JUST WONT GO AFTER THAT. gm KNOWS THERE IS AN ISSUE WITH THESE 9 SPEED TRANSMISSIONS BECAUSE THEY ARE ON BACKORDER AND MY VEHICLE HAS BEEN IN THE SHOP FOR OVER TWO MONTHS WAITING ON PARTS. SINCE THIS IS THE 3RD FAILED TRANSMISSION UNDER WARRANTY, I CREATED A COMPLAINTWITH GM AND REQUESTED A BUY BACK BUT THEY REFUSED.

NHTSA ID

11699735

Incident

Sep 10, 2025

On July 31st 2025 my vehicle would not sift out of first gear. I had vehicle towed to Kelly Chevrolet in [XXX] . After a failed repair attempt on August 18 2025 have been waiting on back ordered valve body part number 24045659. No eta on this part even though a transmission replacement would resolve but dealer refuses to replace. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11689364

Incident

Jul 31, 2025

Since I’ve got the vehicle i experienced issues with it not going in drive or reverse sporadically. I was air to obtain this in video and show it to the dealer for the first time Dec 2023. In addition and overtime it’s seems this issue may go hand and hand with the lane assist issue that had been known on Chevy models where they either don’t work of they don’t recognize the lanes correctly and they pull although your in the correct lane.i have specifically taken the car in on 3 or more occasions about it disengaging and not driving forward or backwards. More recently it started to seem as if while u was actually driving the car did not want to accelerate forward and then while trying to accelerate the steering wheel pulled and caused the car to spin out of control on the freeway. The car was just in the shop from End of April till May and the issues are unable to be duplicated so I just keep getting pushed off with the car. The car radio constantly malfunctions and glitches i several different forms, black screen no sound or not allow Bluetooth capabilities. My most main concern is this power train issue and me getting stuck with a car that is going to be it of warranty and the issue has never been resolved even though I have showed the dealership a live video of the occurring issue that there is something wrong here.

NHTSA ID

11688892

Incident

Sep 6, 2005

Thermostat not working. Causing fan to run as if the vehicle is overheating

NHTSA ID

11687082

Incident

Sep 12, 2025

I am writing to inform the appropriate authorities of the issues that I’ve continually had with my 2023 Chevrolet Blazer. It has come to my attention that the aforementioned vehicle will need a new transmission and possible engine repair currently totaling at just over 6,000 dollars in repair costs. When I was provided with the total repair cost I was informed by the certified service representative that this was a common issue for the Blazer model and that GM was aware of the ongoing issue. I’ve reached out to GM with my concerns regarding this vehicle and the fact that this is an issue that has in prior dates prompted recalls for blazer models from the year 2020-2024. I have because of the transmission defects/ failures been stranded and unable to shift gears required for proper motion of the car. To which I am sure you can understand the public safety risk of an inoperative transmission. I have taken the car in for service concerning the transmission on 3 separate occasions within the last 10 days and was told by prior service technicians that “ No problems were visible” leading to the total breakdown of the transmission. I reached out to GM and told them of my wish to return the leased vehicle early due to my fears of now driving and operating the car and was told that I was not eligible for a buy back. GM is maintaining its stance of no liability and I am seeking outside help from this governing agency to ensure that repair costs are fully covered for this defective product.

NHTSA ID

11681348

Incident

Aug 11, 2025

The contact's father owns a 2013 Chevrolet Blazer. The contact stated that while his father was driving at approximately 40 MPH straight forward, the brake pedal was depressed, and it traveled to the floorboard. Then, the brake pedal was lifted, and the brake pedal traveled a second time to the floorboard. The vehicle did not slow down as intended, and the vehicle crashed into the rear of another vehicle. The air bag did not deploy, and no warning lights illuminated. The contact's father sustained a facial bruise. Medical attention was not needed. A police report was filed. The vehicle was towed to a lot where it was pending an inspection from the insurance company. The manufacturer was not notified of the failure. The failure mileage was 34,000.

NHTSA ID

11678513

Incident

Aug 1, 2025

Mileage

34,000 mi

The contact owns a 2023 Chevrolet Blazer. The contact stated while driving at an undisclosed speed, the Lane Keep Assist feature steered the vehicle to the left while the vehicle was driving inside the lane. The Lane Keep Assist warning light was illuminated. Additionally, the vehicle also experienced a loss of power steering assist. The contact stated that the failure occurred after the vehicle drove over a pothole. The contact also stated that the dealer had previously replaced the front-end bracket after another vehicle struck the front end while the vehicle was parked and unoccupied in a parking lot. The vehicle was taken to a second dealer, Escude Chevrolet of Easley (5010 Old Easley Bridge Rd, Easley, SC 29642), but the cause of the failure could not be determined. The contact was informed that the tires were the incorrect size for the vehicle. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 8,500.

NHTSA ID

11668579

Incident

Jun 23, 2025

Mileage

8,500 mi

Transmission going bad car shakes and studders upon acceleration

NHTSA ID

11667596

Incident

Jan 6, 2025

The contact owns a 2023 Chevrolet Blazer. The contact stated while driving at an undisclosed speed, the vehicle shuddered, and the transmission was difficult to shift into gear. There was no warning light illuminated. The vehicle was taken to an independent mechanic and was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The vehicle was taken to the dealer, where the same diagnostic information was provided. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 96,244.

NHTSA ID

11655492

Incident

Apr 18, 2025

Mileage

96,244 mi

Oil leaking from the Cam Shaft Carrier Seal.

NHTSA ID

11654312

Incident

Apr 10, 2025

Addition to Case #[XXX] Hi: Read the following response from Chevrolet Care at the end of this Email about my braking problem. Take Note That Chevrolet is Admitting that in a case like mine (wet, slippery snow conditions) I only have Basically Two Wheel Braking and those two wheels (tires) are sliding during the complete stop. This happens when driving in town (20 -25 mph) The rear wheels as Chevrolet says have a drag effect, (basically no braking) Chevrolet has created a crash Hazard with this over engineered braking system when used in wet slippery snow conditions. Thank You [XXX] See Enail from Chevrolet Cares Hello [XXX], Thank you for your patience and for providing this information. We received an update from your dealership, Bergstrom Chevrolet Of Manitowoc, who advised the following: The system is functioning as normal. Brake pad thickness was measured at 8mm on all 4 wheels. The ABS system doesn't activate on all 4 wheels unless there is a total loss of traction across all four wheels which would indicate a total loss of control. With two wheels activating and the rear wheels still spinning is allowing for the retention of control by allowing for braking to the rear wheels but at a lesser degree to create stability and drag (braking) to maintain control and steering capabilities during the loss of traction at the front end. The ABS system does allow for the adjustment of braking power to specific wheels in an effort to maintain proper traction and steering prior to the emergency systems engaging in the event of a slide. The dealership is our eyes and ears on the ground, and I will stand by their judgement. However, if you feel strongly against the dealership's judgement, it is to your discretion on what dealership you would like to work with. Please note, this does not guarantee a different resolution. Please let me know if you wish to visit another GM location for further assistance, we're here to help. Tea Chevrolet Customer Care INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION

NHTSA ID

11652362

Incident

Mar 20, 2025