2024 Chevrolet Blazer Powertrain (other) Problems

Chevy Trunk opens automatically without key

NHTSA ID

11766374

Incident

Sep 23, 2026

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)

NHTSA ID

11761802

Incident

Aug 11, 2026

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.

NHTSA ID

11753684

Incident

Jul 20, 2026

I was driving to work as I normally do and work is only 15 miles away from home I get to work turn into the parking lot stop to scan my badge and I hear knocking noise I thought it was coming from the truck in front of me but after he moved on I still heard the noise and I found a parking spot as soon as I could and the engine light on the dash came on and the motor that was knocking is definitely my Blazer with only 11,222 miles on it. I always keep up on my vehicles maintenance in fact I just had the oil changed at Ray Skillman Gm Dealership2/16/26 it had 10,960 miles on it. Before that I had the oil changed at Ray Skillman 08/20/25 it had 7,720 miles on it then and before that. The very first oil change 22/ may /25 the mileage was 5,354 on it was at Hare Chevrolet where I purchased this Blazer RS Brand new it had 34 miles I always get the oil changed when it gets to 25%

NHTSA ID

11725131

Incident

Mar 15, 2026

The transmission in my 2024 Chevrolet Blazer is very noisy often making whining and grinding sounds and I experience rough shifting and transmission hesitation during acceleration or gear changes.

NHTSA ID

11688917

Incident

Sep 21, 2025

The contact rented a 2024 Chevrolet Blazer. The contact stated that while driving at undisclosed speeds, the vehicle vibrated and wobbled. There was no warning light illuminated. The contact stated that while driving at undisclosed high speeds, the vehicle vibrated abnormally. The contact stated that the vibration felt like the wheels were detaching from the vehicle, causing the children's car seats to also vibrate. The contact pulled over to the side of the road. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The rental company was notified of the failure, but no assistance was provided. The manufacturer was not made aware of the failure. The failure mileage was 46,831.

NHTSA ID

11669718

Incident

Jun 27, 2025

Mileage

46,831 mi

Purchased a brand new 2024 Blazer on [XXX] - 11 miles on the vehicle from Friendly Chevrolet in Dallas, TX. Transmission failed at 1150 miles in Galveston, TX on [XXX]. According to the Galveston Dealership an extensive transmission repair was performed on the vehicle at 6 miles. According to the GM rep I spoke with, that maintenance was performed as a Service Bulletin Recall. Car was transported to Dallas by GM. Parts are on back order. No ETA for resolution. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11660799

Incident

Apr 11, 2025

Vehicle has only 1650 miles on it. It is driven conservatively especially so during the first 1000 miles of use “break in period”. Was leaving our neighborhood and the vehicle was searching for a gear, revving and jerking. Check Engine light came on. Limped the vehicle slowly back home and contacted dealer. Had vehicle towed to dealer and they diagnosed the issue as a faulty valve body. Part is on national backorder.

NHTSA ID

11583806

Incident

Apr 15, 2024