General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

See also:
Magnetic Ride Control
The XLR also is one of the world's first vehicles to be equipped with
Magnetic Ride Control - electronically controlled, magnetic-fluid based
real-time damping. The system uses four wheel-to-body ...
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 ...
Setting the Power Liftgate Intermediate Mode
To change the liftgate stop position:
1. Turn the liftgate switch to either
the MAX, or the ¾ mode position
and power open the liftgate.
2. Stop the liftgate movement at
the desired hei ...






