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:
Media center 730N/430 (RER/REN/RBZ) —
AM/FM stereo radio and CD/DVD/HDD/NAV
NOTE: The sales code is located on the lower right side
of the unit’s faceplate.
The REN, RER and RBZ radios contain a CD/DVD
player, USB port, and a 30-gigabyte hard drive (HDD).
Sirius Satellite Radio is optional. The 6.5 in (16.5 cm)
t ...
On-Board Vehicle Computers and Event Data Recorders
Your vehicle is equipped with on-board computer systems which monitor and control
several aspects of vehicle performance, including the following:
• Emission-related components and engine parameters such as engine speed and throttle
position ...

Automatic Transmission