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:
Reducing Speed While Using
Cruise Control
If the cruise control system is
already activated:
• Move the thumbwheel toward
SET/− and hold until the desired
lower speed is reached, then
release it.
• To slow down in small am ...
StabiliTrak® Service Light
This light will come on
briefly when the engine
is started.
This light will come on if a problem is detected in
the StabiliTrak® system. ...
Starter Switch Check
WARNING:
When you are doing this inspection, the vehicle
could move suddenly. If the vehicle moves, you or
others could be injured.
1. Before starting this check, be sure there is enough
room ...
