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:
Towing A Disabled Vehicle
This section describes procedures for towing a disabled
vehicle using a commercial wrecker service. If the transmission
and drivetrain are operable, disabled vehicles
may also be towed as described under “Recreational
Towing” in the “St ...
Emissions Inspection And Maintenance Programs
In some localities, it may be a legal requirement to pass
an inspection of your vehicle’s emissions control system.
Failure to pass could prevent vehicle registration.
For states that require an Inspection and Maintenance
(I/M), this check ...

Automatic Transmission