2012 GMC Sierra Owner's Manual - Page 185

Instruments and Controls TRANSMISSION HOT IDLE ENGINE Notice: Do not drive the vehicle while the transmission fluid is overheating and the transmission temperature warning is displayed on the instrument panel cluster and/or DIC, or the transmission can be damaged. This could lead to costly repairs that would not be covered by the warranty. This message displays and a chime may sound if the transmission fluid in the vehicle gets hot. Driving with the transmission fluid temperature high can cause damage to the vehicle. Stop the vehicle and let it idle to allow the transmission to cool. This message clears and the chime stops when the fluid temperature reaches a safe level. . 5-47 Vehicle Reminder Messages CHECK TRAILER WIRING On vehicles with the Integrated Trailer Brake Control (ITBC) system, this message may display and a chime may sound when one of the following conditions exists: . A trailer with electric brakes becomes disconnected from the vehicle. ‐ If the disconnect occurs while the vehicle is stopped, this message clears itself after a short time. ‐ If the disconnect occurs while the vehicle is moving, this message stays on until the ignition is turned off. There is a short in the wiring to the electric trailer brakes. As soon as it is safe to do so, carefully pull the 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. This message clears if the trailer is reconnected. This message also clears if you acknowledge it. If this message still displays, either the vehicle or the trailer needs service. See your dealer. See "Integrated Trailer Brake Control System" under Towing Equipment on page 9‑94 for more information. ICE POSSIBLE DRIVE WITH CARE This message displays when ice conditions are possible. TRAILER CONNECTED On vehicles with the Integrated Trailer Brake Control (ITBC) system, this message displays briefly when a trailer with electric brakes is first connected to the vehicle. When this message displays, power is no longer available to the trailer brakes.