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:
Accessories and Modifications
Adding non-dealer accessories or making modifications
to the vehicle can affect vehicle performance and safety, including such things
as airbags, braking, stability, ride and handling, emissions s ...
Automatic Transmission Operation
There are several different positions for your gear
shift lever.
PARK (P): This position locks the rear wheels.
It is the best position to use when you start the
engine because your vehicle ...
Driving for Better Fuel Economy
Driving habits can affect fuel mileage. Here are some driving tips to get the
best fuel economy possible.
Avoid fast starts and accelerate smoothly.
Brake gradually and avoid abrupt stops.
A ...
