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:
Remote Control
To use the remote control, aim it at the transmitter window at either seatback
console and press the button. Direct sunlight or very bright light could affect
the ability of the RSE transmitter ...
Remote Vehicle Start
With this feature the engine can be started from outside of the vehicle. ...
Conditions in Which Remote Start Will Not Work
The remote vehicle start feature will not operate if:
○ The key is in the ignition.
○ The hood or doors are not closed.
○ The hazard warning flashers are on.
○ There is an ...