Horn
Press 
on the steering wheel pad
to sound the horn.
See also:
Average Fuel Economy/Instantaneous Fuel Economy
On some models, this display
shows Average Fuel Economy. On
other models, this display shows
both Average Fuel Economy and
Instantaneous Fuel Economy.
The Average Fuel Economy display
shows ...
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 opt ...
Service Parts Identification Label
This label, located either in the glove box or the trunk area, has the following
information:
Vehicle Identification Number (VIN).
Model designation.
Paint information.
Production options ...