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:
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 ...
Engine Compartment — 3.7L
1 — Air Cleaner Filter
2 — Engine Oil Dipstick
3 — Brake Fluid Reservoir
4 — Integrated Power Module (Fuses)
5 — Battery
6 — Washer Fluid Reservoir
7 — Engine Coolant Reservoir
8 — Engine Oil Fill
9 — Coolant Press ...

Automatic Transmission