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:
Capacities and Specifications
The following approximate capacities are given in English and metric
conversions.
Engine Specifications
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Automatic Transmission Shift Lock
This vehicle has an electronic shift lock release system.
The shift lock release is designed to:
• Prevent ignition key removal unless the shift lever is
in P (Park).
• Prevent movement of th ...
Calling for Assistance
When calling Roadside Assistance, have the following
information ready:
• Your name, home address, and home telephone number
• Telephone number of your location
• Location of the vehicle
â ...
