Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.
See also:
Overview
The GMC Sierra All Terrain HD concept is an exploration of heavy-duty truck
capability combined with greater off-road versatility. It is highlighted by a
bold exterior design, enhanced all-terrain ...
Ashtrays
The vehicle may have a front ashtray located near the center of the instrument panel. Pull on the door to open it. The ashtray may have a cigarette lighter.
Notice: If papers, pins, or other flammabl ...
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 5‑21. If this message ap ...