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:
Door locks
Manual Door Locks
Use the manual door lock plunger to lock the doors from
inside the vehicle. If the plunger is down when the door
is closed, the door will lock. Make sure the keys are not
inside the vehicle before closing the door.
Manual ...
Cruise control system
The cruise control system allows you to program the vehicle to maintain a constant
speed without resting your foot on the accelerator pedal. With cruise control, you
can set and automatically maintain any speed of between 40 km/h (24 mph) and 160 ...

Automatic Transmission