Horn
Press 
on the steering wheel
pad to sound the horn.
See also:
Speedometer and Odometer
The speedometer lets you see your speed in
both miles per hour (mph) and kilometers per
hour (km/h).
The odometer shows how far your vehicle has
been driven, in either miles (used in the United
...
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 ...
XM Messages
XL (Explicit Language Channels): These channels, or any others, can be blocked
by request, by calling 1-800-929-2100 in the U.S., and 1-877-438-9677 in Canada.
XM Updating: The encryption code in t ...