What are the reasons for the Buick Excelle not responding when stepping on the accelerator?

[DaniellaFitz]

Here are the reasons why the Excelle does not respond when stepping on the accelerator: 1. Transmission failure: The transmission is relatively easy to diagnose. If there is a problem with the transmission mechanism, the accelerator pedal cannot be pressed down, and the engine speed will suddenly increase from 2000 rpm to 4000 rpm. Because the power is cut off, the engine suddenly has zero load, and the speed will fluctuate. Common engine problems include issues with the transmission control system. The engine light will come on, and the fault light will definitely store the fault. Use a diagnostic tool to read the fault code. 2. Throttle body: Throttle body failure. 3. Accelerator pedal: Accelerator pedal failure. 4. Brake override system: Modern cars are also equipped with a brake override system. If the brake pedal and accelerator pedal are pressed simultaneously, the brake pedal takes priority, and the accelerator will not respond. Check if the floor mat is secured. If the floor mat accidentally touches the brake pedal, even slightly, it may trigger a brake signal, causing the brake override system to activate.