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:
Selecting a Band
Press the RADIO/BAND button to choose AM, FM, or XM, if equipped.
The last station that was playing starts playing again. ...
PARKING ASSIST OFF
After the vehicle has been started,
this message displays to remind the
driver that the URPA system has
been turned off. This message also
displays when there is a temporary
condition causin ...
When to Change Engine Oil
This vehicle has a computer system
that indicates when to change the
engine oil and filter. This is based
on a combination of factors which
include engine revolutions, engine
temperature, an ...