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:
How to Reset the Engine Oil Life System
Reset the system whenever the engine oil is changed so that the system can calculate
the next engine oil change. To reset the system:
1. Turn the ignition to ON/RUN with the engine off.
2. Press t ...
Power Reclining Seatbacks
Power Reclining Seatbacks
To raise or recline the seatback, tilt
the top of the vertical control
forward or rearward. See Reclining
Seatbacks. ...
SBZA Error Messages
The following messages may appear in the DIC:
SIDE BLIND ZONE ALERT SYSTEM OFF: This
message indicates that the driver has turned the
system off.
SIDE BLIND ZONE SYS. UNAVAILABLE: This
message ...
