GMC Terrain: OnStar Overview
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services.
The OnStar system status light is next to the OnStar buttons. If the status light is:
○ Solid Green: System is ready.
○ Flashing Green: On a call.
○ Red: Indicates a problem.
Push 
or call 1&-888&-4&-ONSTAR (1&-888&-466&-7827)
to speak to an Advisor.
Push 
to:
○ Make a call, end a call, or answer an incoming call.
○ Give OnStar Hands-Free Calling voice commands.
○ Give OnStar Turn-by-Turn Navigation voice commands. Requires the available Directions
and Connections service plan.
Push 
to connect to a live Advisor
to:
○ Verify account information or update contact information. . Get driving directions. Requires the available Directions and Connections service plan. . Receive On-Demand Diagnostics for a check on the vehicle’s key operating systems. . Receive Roadside Assistance.
Push
to get a priority connection
to an Emergency Advisor available 24/7 to:
○ Get help for an emergency.
○ Be a Good Samaritan or respond to an AMBER Alert.
○ Get crisis assistance and evacuation routes.
Vehicle Data
See also:
To help prevent corrosion
You can help prevent corrosion from getting
started by observing the following:
Keep Your Car Clean
The best way to prevent corrosion is to keep
your car clean and free of corrosive materials.
Attention to the underside of the car is particul ...
Replacement of wiper blades
Grease, wax, insects, or other material on
the windshield or the wiper blade results in
jerky wiper operation and streaking on the
glass. If you cannot remove the streaks
after operating the windshield washer or if
the wiper operation is je ...
