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:
Automatic Transmission Shift Lock Control Function Check
WARNING!
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be
sure there is enough r ...
Dual Automatic Climate Control System
For vehicles with this system, it controls the heating, cooling, and
ventilation.
Non-eAssist Vehicles
A. Power
B. Driver Temperature Control
C. Defrost
D. Fan Control
E. Air Delivery Mode C ...
When the System Does Not
Seem to Work Properly
The RVC system may not work
properly or display a clear image if:
• The RVC is turned off. See
“Turning the Rear Camera
System On or Off” earlier in this
section.
• It is dark.
• ...