Danger, Warnings, and Cautions
Warning messages found on vehicle labels and in this manual describe hazards and what to do to avoid or reduce them.
Danger indicates a hazard with a high level of risk which will result in serious injury or death.
Litho in U.S.A.
Part No. 20977758 C Third Printing
Warning or Caution indicates a hazard that could result in injury or death.

Notice: This means there is something that could result in property or vehicle damage. This would not be covered by the vehicle's warranty.

A circle with a slash through it is a safety symbol which means “Do Not,” “Do not do this,” or “Do not let this happen.”
See also:
Three-Way Calling
Three-way calling must be supported on the Bluetooth phone and enabled by the wireless service carrier.
1. While on a call, press
.
The system responds with “Ready,” followed by a tone.
2. Say ...
Diagnostics
OnStar Vehicle Diagnostics will
perform a vehicle check every
month. It will check the engine,
transmission, antilock brakes, and
major vehicle systems. It also
checks the tire pressures, if ...
Auto Rear Defog
If equipped, this will allow you to
turn the auto rear defog on or off.
This feature will automatically turn
on the rear defogger when it is cold
outside.
Press SELECT when Auto Rear
Defog i ...
