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:
Lower Anchor and Top Tether Anchor Locations
Rear Seat
(Top Tether Anchor): Seating positions
with top tether anchors.
(Lower Anchor): Seating positions
with two lower anchors.
To assist you in locating the lower anchors, each rear a ...
Bulb Replacement
For the proper type of replacement bulbs, see Replacement Bulbs .
For any bulb-changing procedure not listed in this section, contact your dealer. ...
Customer Satisfaction Procedure (Mexico)
Did you get the Warranty Extension
Plan? This plan is recommended by
General Motors to supplement the
warranty included with the new
vehicle purchase.
See your dealer for details.
Customer ...
