OnStar Services
See also:
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B, and C. Those grades
represent the tire's ability to stop on wet pavement as measured under controlled
conditions on specified governm ...
Driving on Snow or Ice
Drive carefully when there is snow or ice between the tires and the road, creating
less traction or grip. Wet ice can occur at about 0°C (32°F) when freezing rain
begins to fall, resulting in even ...
Control Buttons
The knobs and buttons used to
control the radio are:
(XM): Press to choose the
XM band (if equipped).
TUNE/TONE: Turn to search for
stations. Press to enter the
Tone menu.
MENU/SELECT: Tur ...






