GMC Terrain: Drive Systems
All-Wheel Drive
Vehicles with this feature always send engine power to all four wheels. It is fully automatic, and adjusts itself as needed for road conditions.
When using a compact spare tire on an AWD vehicle, the system automatically detects the compact spare and disables AWD. To restore AWD operation and prevent excessive wear on the system, replace the compact spare with a full-size tire as soon as possible. See Compact Spare Tire on page 10‑75 for more information.
See also:
Vehicle Loading
Vehicle Loading
Your vehicle was designed for specific weight capacities. The weight capacities of your vehicle are indicated by the Gross Vehicle Weight Rating (GVWR), the Gross Axle Weight Rating (GAWR, front and rear) and the Vehicle Capac ...
LW/MW/FM digital tuning radio with CD changer*
The audio system can only be used when the ignition switch is in the “ON” or
“ACC” position.
NOTE:
● When listening to the audio system with the engine stopped, be sure to turn the
ignition switch to the “ACC” position.
...

Automatic Transmission