See also:

Compass
The vehicle may have a compass in the Driver Information Center (DIC). ...

General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks: ...

Power Liftgate
On vehicles with a power liftgate, the vehicle must be in P (Park) to operate. The taillamps flash and a chime sounds when the power liftgate moves. WARNING You or others could be injured if caught ...