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:
Sun Visors
Sun Visors with Slide
Your vehicle may have this feature. Pull the sun
visor down to block glare. Detach the sun visor from
the center mount and slide it along the rod from
side-to-side to cover t ...
High-Beam On Light
The high-beam on light comes on when the high-beam headlamps are in use.
See Headlamp High/Low-Beam Changer for more information. ...
Programming the Power
Windows
If the battery on the vehicle has
been recharged, disconnected, or is
not working, you will need to
reprogram each front power window
for the express-up feature to work.
Before reprogramming, ...