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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

CHEVROLET BLAZER 2023 STEERING

Re: Vehicle Safety Defect Complaint â 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: â¢ Reduced Engine Power â¢ Service ESC â¢ Steering Assist Reduced / Drive with Care â¢ 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.

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.

CHEVROLET BLAZER 2023 SERVICE BRAKES

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.

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

CHEVROLET BLAZER 2023 ELECTRICAL SYSTEM

2023 Chevrolet Blazer FWD — vehicle data sourced from FuelEconomy.gov.

Le Chevrolet Blazer FWD 2023 est un VUS compact certifié, offrant un équilibre entre efficacité énergétique et performance. Avec une transmission automatique à 9 rapports et un moteur turbocompressé, il est conçu pour une conduite quotidienne fiable.

	2019	2020	2021	2022	2023	2024	2025
Prix	—	—	—	—	$35,995	$35,700–$47,700	—
Cylindrée	2.5L	2L	3.6L	3.6L	2.0 L	3.6L	3.6L
Type de carburant	Essence ordinaire	Essence ordinaire	Essence ordinaire	Essence ordinaire	Regular	Essence ordinaire	Essence ordinaire
Transmission	Automatique 9 vitesses	Automatique 9 vitesses	Automatique 9 vitesses	Automatique 9 vitesses	9-speed automatic	Automatique 9 vitesses	Automatique 9 vitesses
Type de carrosserie	Petit SUV 2RM	Petit SUV 2RM	Petit SUV 2RM	Petit SUV 2RM	SUV	Petit SUV 2RM	Petit SUV 2RM

Chevrolet Blazer FWD (2023) Spécifications