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:
Odometer
The odometer shows how far the vehicle has been driven, in either kilometers or miles.
This vehicle has a tamper-resistant odometer. The digital odometer will read 999,999 if it is turned back.
If t ...
If Steam Is Coming from the
Engine Compartment
See Overheated Engine Protection
Operating Mode for
information on driving to a safe
place in an emergency. ...
Limited-Slip Differential
Vehicles with a limited-slip
differential can give more traction on
snow, mud, ice, sand, or gravel.
It works like a standard differential
most of the time, but when traction
is low, this fea ...