See also:

Keyless Unlock
If the vehicle has the keyless access system, this feature allows you to select which doors will automatically unlock when you approach the vehicle with the keyless access transmitter and ...

Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfer ...

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 ...