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:
Economical driving
For economical driving, there are some technical requirements that have to be
met. The prerequisite for low fuel consumption is a properly adjusted engine. In
order to achieve longer life of the vehicle and the most economical operation, we
rec ...
Dead Lock System*
The Dead Lock System helps to prevent theft. When the keyless entry system has
been used to lock all of the doors and the tailgate, the Dead Lock System makes
it impossible to unlock the doors using the inside lock knobs.
CAUTION:
● Do n ...

Automatic Transmission