Stabilitrak is a traction control system that is designed to prevent loss of traction of the driven road wheels. It is a more advanced system than electronic stability control (ESC) and can keep the driver safer on the road. Stabilitrak helps the driver to drive in a straight line by monitoring and adjusting the steering, braking, and traction of the vehicle. The system uses sensors to figure out the position of the steering wheel and tires and checks that they match the direction the vehicle is moving. If it senses that the vehicle seems to be moving in a different direction, it will adjust the steering, braking, and traction to keep the vehicle moving in a straight line. If there is an issue with the Stabilitrak system, a warning light will appear on the dashboard indicating that the system has failed. The warning light might be caused by an input sensor, a faulty controller, or a damaged connection. If the warning light appears, it is recommended to take the vehicle to a local dealer or a professional repair shop to fix the issue.