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:
Removing the Flat Tire andInstalling the Spare Tire
1. If your vehicle has a wheel cap that covers
the wheel nuts, position the chisel end of the
wheel wrench in the notch and pry it off.
2. Using the wheel
wrench, loosen all
the wheel nuts.
...
Footnotes — Maintenance
Schedule Additional Required
Services — Severe
a) Or every two years, whichever
comes first.
b) Check all fuel and vapor lines
and hoses for proper hook-up,
routing, and condition. Check that
the purge valve, if the vehicle has
one, wor ...
Loss of Control
Let us review what driving experts say about what happens when the three control systems—brakes, steering, and acceleration—do not have enough friction where the tires meet the road to do what the ...