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 Spare Tire and Tools
The equipment you will need is located in the trunk.
1. Open the trunk. See
Trunk.
2. Turn the center retainer
counterclockwise to
remove it.
3. Lift and remove the compact spare tire cover ...
On the Road
The LaCrosse moves out when pushed, but its capabilities stop short of an
all-out sport sedan's — fine by me, seeing as no one ever wanted Buick to build
the next BMW. The LaCrosse CXS, which pa ...
Trunk Release
To open the trunk, press on the
center stack or on the Remote Keyless
Entry (RKE) transmitter. For more information see:
. Trunk .
. Remote Keyless Entry (RKE) System Operation . ...
