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:
Hazard Warning Flashers
(Hazard Warning Flashers):
Press this button located on top of the steering column, to make the front and
rear turn signal lamps flash on and off. This warns others that you are having trouble. ...
Engine Compartment
Fuse Block
(CTS Coupe and Sedan)
The underhood fuse block is
located on the left side of the engine
compartment.
Lift the fuse block cover to access
the fuses.
The vehicle may not be equipped
with all of the fuses and rel ...
Phone
Bluetooth
For vehicles equipped with Bluetooth capability, the system can interact with
many cell phones, allowing:
Placement and receipt of calls in a hands-free mode.
Sharing of the cell ph ...