GMC Sierra Owners Manual
Brake System MessagesInstruments and Controls / Vehicle Messages / Brake System Messages
SERVICE BRAKE SYSTEM
This message displays along with the brake system warning light if there is a problem with the brake system. See Brake System Warning Light on page 5‑27. If this message appears, stop as soon as possible and turn off the vehicle. Restart the vehicle and check for the message on the DIC display. If the message is still displayed or appears again when you begin driving, the brake system needs service as soon as possible. See your dealer.
SERVICE BRAKES SOON
On some vehicles, this message displays if there is a problem with the brake system. If this message appears, stop as soon as possible and turn off the vehicle. Restart the vehicle and check for the message on the DIC display. If the message is still displayed or appears again when you begin driving, the brake system needs service. See your dealer.
SERVICE TRAILER BRAKE SYSTEM
On vehicles with the Integrated Trailer Brake Control (ITBC) system, this message displays and a chime may sound when there is a problem with the ITBC system.
When this message displays, power is no longer available to the trailer brakes.
As soon as it is safe to do so, carefully pull your vehicle over to the side of the road and turn the ignition off. Check the wiring connection to the trailer and turn the ignition back on. If this message still displays, either your vehicle or the trailer needs service. See your dealer.
See “Integrated Trailer Brake Control System” under Towing Equipment on page 9‑100 for more information.
