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:
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Add-On Electrical Equipment
Notice: Do not add anything electrical to the vehicle
unless you check with your dealer/retailer first. Some
electrical equipment can damage the vehicle and the
damage would not be covered by th ...
Off-Road Recovery
The vehicle's right wheels can drop off the edge of a road onto the shoulder while driving.
If the level of the shoulder is only slightly below the pavement, recovery should be fairly easy.
Ease o ...