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:
Battery
- Before beginning work on or near
any battery, be sure to extinguish
all cigarettes, matches, and lighters.
Never expose a battery to an
open flame or electric sparks.
Batteries give off a gas which is
highly flammable and explosive.
...
Cooling system
Never attempt to remove the radiator
cap until the engine has been
shut off and has cooled down
completely. Since the coolant is
under pressure, you may suffer
serious burns from a spray of boiling
hot coolant when the cap is
remove ...

Automatic Transmission