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:
Safety Belt Pretensioners
This vehicle has safety belt pretensioners for front outboard occupants. Although the safety belt pretensioners cannot be seen, they are part of the safety belt assembly.
They can help tighten the sa ...
STEP ON BRAKE TO
RELEASE PARK BRAKE
This message is displayed if you
attempt to release the electric
parking brake without the brake
pedal applied. See Parking Brake for more information. ...
Starting the Vehicle with a Low Transmitter Battery
If the transmitter battery is weak, the DIC may display NO REMOTE DETECTED when
you try to start the vehicle. The REPLACE BATTERY IN REMOTE KEY message may also
be displayed at this time.
To star ...
