2011 GMC Acadia Owner's Manual - Page 177

Instruments and Controls SERVICE TIRE MONITOR SYSTEM On vehicles with the Tire Pressure Monitor System (TPMS), this message displays if a part on the TPMS is not working properly. The tire pressure light also flashes and then remains on during the same ignition cycle. See Tire Pressure Light on page 5‑23. Several conditions may cause this message to appear. See Tire Pressure Monitor Operation on page 10‑48 for more information. If the warning comes on and stays on, there may be a problem with the TPMS. See your dealer. 5-45 TIRE LEARNING ACTIVE This message displays when the Tire Pressure Monitor System (TPMS) is re-learning the tire positions on your vehicle. The tire positions must be re-learned after rotating the tires or after replacing a tire or sensor. See Tire Rotation on page 10‑52, Tire Pressure Monitor System on page 10‑47, and Tire Pressure on page 10‑45 for more information. The AWD system is disabled until the compact spare tire is replaced by a full-size tire. If the warning message is still on after putting on the full-size tire, you need to reset the warning message. To reset the warning message, turn the ignition off and then back on again after 30 seconds. If the message stays on, see your dealer right away. See All-Wheel Drive on page 9‑28 for more information. Transmission Messages ALL WHEEL DRIVE OFF If your vehicle has the All-Wheel Drive (AWD) system, this message displays when there is a compact spare tire on the vehicle, when the Antilock Brake System (ABS) warning light comes on, or when the rear differential fluid is overheating. This message turns off when the differential fluid cools. SERVICE ALL WHEEL DRIVE If your vehicle has the All-Wheel Drive (AWD) system, this message displays if there is a problem with this system. If this message appears, stop as soon as possible and turn off the vehicle. Restart the vehicle after 30 seconds and check for the message on the DIC display. If the message is still displayed or appears again when you begin driving, the AWD system needs service. See your dealer.