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:
Engine oil
To check and refill engine oil
The engine oil used has a significant effect on the engine’s performance, service
life and startability. Be sure to use oil of the recommended quality and appropriate
viscosity. All engines consume a certain am ...
Audio control buttons (if equipped)
These buttons are located on the spokes
of the steering wheel. They allow the
driver to control audio functions without
taking his/her hands off the steering
wheel. ...

Automatic Transmission