Reactivation for Subsequent Owners
Push 
and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle.
The Advisor will update vehicle records and will explain the OnStar service offers and options available.
See also:
Passenger Sensing System
The vehicle has a passenger sensing system for the front outboard passenger position.
The passenger airbag status indicator will light on the instrument panel when the vehicle is started.
United S ...
Extending Engine Run Time
For a 10-minute extension, repeat Steps 1 and 2 while the engine is still running.
The remote start can be extended once.
When the remote start is extended, the second 10 minutes will start immedia ...
Retrieve My Number
1. Push . System responds:
“OnStar ready.” 2. Say “My Number.” System responds: “Your OnStar Hands-Free Calling number is.” ...