2023 Chevrolet Blazer

43 complaints on file, page 1 of 3.

1. Filed Sep 18, 2026Failure Sep 10, 2025Hanahan, SCElectrical system, Service brakes, Unknown or otherCrash1 injured

   2023 Chevrolet Blazer 42334 miles 9/18/2026 Component failed: 2023 Blazer RS eBoost system. Integrated electronic brake booster / master cylinder / brake pedal sensor assembly. Component available for inspection. Same left front corner had frozen caliper FRC13443C at 37,940 miles June 2025 to pass inspection, sold as certified at 38,038 miles. Vehicle currently 42,334 miles. Safety risk: Hard brake pedal, loss of brake assist, increased stopping distance. Same condition reported before front collision August 2025. Left front remains hot. Driver scared to drive. NHTSA EA26006 open for eBoost 2023 Blazer describes same failure - spindle fracture, loss of ABS/stability, 21 crashes. Reproduced/confirmed: Yes. Independent shop A+ Automotive RO 82780 Sept 15 2026 confirmed hard pedal remains after full bleed, measured 8mm front/rear. Second shop Sept 17 2026 confirmed system is all-wire eBoost, no vacuums, no vacuum leaks possible. Dealer Sept 16-17 2026 stated "checked vacuum on the brakes no leaks" and "pedal fine braking normal" on eBoost vehicle that has no vacuum. Inspected by others: Manufacturer not yet. Dealer inspection 09/16-17/26 misdiagnosed as vacuum issue. Independent inspections A+ Automotive 09/15 and 09/17/26 confirmed eBoost no vacuums and hard pedal remains. Warning lamps/messages: No warning lamps. No ABS light. Symptom is hard pedal that feels like manual brakes without assist. Also left front heat. First appeared June 2025 as frozen left front caliper, returned as hard pedal after bleed. Dealer claimed normal operation.

   NHTSA complaint 11765159
2. Filed Aug 29, 2026Failure Aug 25, 2026Arlington, TXAutomatic emergency braking, Assist, Service brakes

   Multiple warning lights on the vehicle stating the ABS brake system was not functioning, the letters brake showed by the gauges but it was not the parking brake because I put that on to check it and it was a different warning light. The lane assist was not functioning. In January I had the brakes looked at because they are squealing anytime you use them. The brake shop I took it to told me this is a known issue and the brakes are fine and that there was no way to stop the squealing because my brakes still had 80% of their pad. On multiple occasions when I’ve need to brake hard quickly the car had felt like it was shaking and the brakes didn’t feel like they were catching. Vehicle is currently at Vandergriff Chevrolet in Arlington Texas and has been there since August 25th.

   NHTSA complaint 11760523
3. Filed Aug 11, 2026Failure Aug 11, 2026Monroe, MIAutomatic emergency braking, Warnings1 injured

   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 complaint 11756366
4. Filed Aug 2, 2026Failure Jul 11, 2026Petrolia, PAEngine

   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 complaint 11754268
5. Filed Jul 23, 2026Failure Jul 23, 202257,705 milesLaredo, TXSpeedometer/odometer

   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 complaint 11752425
6. Filed Jul 16, 2026Failure Jul 16, 2026Brookings, ORElectrical system

   "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 complaint 11750847
7. Filed Jun 23, 2026Failure Aug 1, 202325,000 milesGrayling, MIPower train

   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 complaint 11746026
8. Filed Jun 23, 2026Failure Jun 21, 2026107,000 milesPowell, TNEngine, Power train

   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 complaint 11745894
9. Filed May 29, 2026Failure May 20, 202648,000 milesEl Cajon, CAFan, Steering

   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 complaint 11740828
10. Filed Apr 29, 2026Failure Apr 27, 2026Summerville, SCEngine, Fuel/propulsion system, Steering

    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 complaint 11734585
11. Filed Apr 18, 2026Failure Apr 1, 2026Montebello, CASteering, Unknown or other

    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 complaint 11731998
12. Filed Apr 3, 2026Failure Apr 2, 2026Ashland, KYService brakes

    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 complaint 11729054
13. Filed Mar 11, 2026Failure Mar 10, 2026Brooklyn, NYElectrical system

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

    NHTSA complaint 11723647
14. Filed Feb 27, 2026Failure Nov 12, 2025Sylvania, OHEngine

    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 complaint 11720888
15. Filed Feb 5, 2026Failure Oct 1, 2025Jamestown, OHElectrical system, Exterior lighting

    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 complaint 11715738
16. Filed Nov 20, 2025Failure Nov 20, 202520,000 milesCarson, CAForward collision avoidance

    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 complaint 11700596
17. Filed Nov 17, 2025Failure Sep 10, 2025Montpelier, VAPower train

    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 complaint 11699735
18. Filed Sep 24, 2025Failure Jul 31, 2025South whitley, INPower train

    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 complaint 11689364
19. Filed Sep 22, 2025Failure Sep 6, 2005Dallas, TXElectrical system, Power train, Steering

    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 complaint 11688892
20. Filed Sep 13, 2025Failure Sep 12, 2025Clarksville, TNElectrical system, Engine

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

    NHTSA complaint 11687082