Horn
Press 
on the steering wheel
pad to sound the horn.
See also:
Unlock Doors
Press the customization button until UNLOCK
DOORS: IN PARK appears in the display.
To select your preference for automatic unlocking,
press the select button while UNLOCK DOORS:
IN PARK is dis ...
Vehicle and Power Issues
OnStar services require a vehicle
electrical system, wireless service,
and GPS satellite technologies to be
available and operating for features
to function properly. These systems
may not o ...
Curve Tips
• Take curves at a reasonable
speed.
• Reduce speed before entering a
curve.
• Maintain a reasonable steady
speed through the curve.
• Wait until the vehicle is out of
the curve bef ...