Service All-Wheel Drive Light

This light should come on briefly when you turn on the ignition, as a check to show you it is working.
The service all-wheel drive light comes on to indicate that there may be a problem with the drive system and service is required. Malfunctions can be indicated by the system before any problem is apparent, which may prevent serious damage to the vehicle. This system is also designed to assist your GM dealer in correctly diagnosing a malfunction.
See also:
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test
course. For example, a tire
graded 150 ...
Compass Messages
CAL
This message is displayed when the compass needs to be calibrated. See Compass
.
– – –
Three dashes will be displayed if the compass needs service. See your dealer
for service. ...
Head Restraint Removal and Reinstallation
The rear outboard head restraints can be removed if they interfere with the proper
installation of the child restraint.
To remove the head restraint:
1. Partially fold the seatback forward. See Re ...
