2021 Chevrolet Suburban Steering Problems

I am submitting this complaint to report a serious safety issue involving my 2021 Chevrolet Suburban equipped with the 3.0L Duramax diesel engine. The vehicle has experienced a recurring problem related to the engine wiring harness. While driving, the vehicle will unexpectedly stall without warning. At the same time, there is an immediate loss of power steering assist, significantly reducing the ability to safely control the vehicle. This creates a dangerous situation, especially at highway speeds or in traffic. The failure appears to be linked to a defect or malfunction in the engine wiring harness, which may be causing intermittent electrical interruptions to critical engine systems. There were no prior warning signs sufficient to prevent the incident. This issue poses a substantial safety risk not only to the driver and passengers but also to other motorists. Sudden engine shutdown combined with loss of steering assist increases the likelihood of a crash. I believe this may be a systemic defect affecting other vehicles of the same model and configuration. I urge the National Highway Traffic Safety Administration to investigate this issue and determine whether a recall should be issued. Vehicle Information: Make: Chevrolet Model: Suburban Year: 2021 Engine: 3.0L Duramax Diesel

The contact owns a 2021 Chevrolet Suburban. The contact stated that while driving at various speeds, the steering wheel was difficult to turn to the left or the right. The contact stated that the failure was intermittent, but was a recurring failure. There was no warning light illuminated. The contact stated that prior to the failure, there was an abnormal whining sound while turning the steering wheel. The vehicle was not taken to a local dealer or independent mechanic to be diagnosed or repaired. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 33,000.

The computer component surged, and the vehicle is available for inspection. The vehicle brake function is lost. Stepping on the brake paddle did not apply brake. Brake function was disabled by the computer. I took the vehicle to dealer, they said it was a component that has high resistance that cause it. But not sure why it has high resistance at that time and the resistance is gone after driver restarted the vehicle. No one else inspected the component beside the dealership. There was no warning at all and this is the first time it happens. Driver was just driving normally and suddenly all the light in the instructment panel started blinking and driver tried to apply brake but nothing happen. Luckly it wasn't rush hour, and driver was able to let the vehicle roll to the freeway exit on ram and use the up ram to slow the vehicle until it almost stop and changed gear to Park to stop the vehicle. Driver then restarted the vehicle and the problem is gone.