See also:

Compass Zone
The zone is set to zone eight upon leaving the factory. Your dealer will set the correct zone for your location. Under certain circumstances, such as during a long distance cross-country trip or movi ...

Interior Mirror
Vehicles with a manual rearview mirror can be adjusted to see clearly behind the vehicle. Hold the mirror in the center to move it up or down and side to side. To reduce headlamp glare during nighttim ...

TTY Users
OnStar has the ability to communicate to the deaf, hard&-ofhearing, or speech&-impaired customers while in the vehicle. The available dealer&-installed TTY system can provide in-vehicl ...