The map data in the vehicle is the most up-to-date information available when the vehicle was produced. The map data is updated periodically, provided that the map information has changed.
For questions about the operation of the navigation system or the update process, contact the GM Nav Disc Center toll-free phone number, 1-877-NAV-DISC (1-877-628-3472) or go to the center’s website, www.gmnavdisc.com. If updates are needed, call the GM Nav Disc Center or order a new Map Update online. To order map data, have the vehicle’s Vehicle Identification Number (VIN) available.
If the System Needs Service
Database Coverage ExplanationsTracing Powder or Chalk Test
Clean the weatherstrips and the contact surfaces with cleaning solvent.
Apply powder or chalk in an unbroken line to the contact surface of the
weatherstrip surrounding the perimeter of the suspected
areas.
Close the panel completely without slamming the panel. Closing the panel
comple ...
Warning Lights, Gauges, and Indicator
Warning lights and gauges can signal that something is wrong before it becomes
serious enough to cause an expensive repair or replacement. Paying attention to
the warning lights and gauges could prevent injury.
Warning lights come on when there could be a problem with a vehicle function.
Some ...
Rear Window Defogger Description and Operation
Rear Window Defogger System Components
The rear window defogger system consists of the following components:
HVAC Control Module
HVAC Control Head
Rear Window Defogger Relay
Rear Defogger Grid
F28UA 40A Fuse
Rear Window Defogger Operation
The rear defog control system utilizes a sin ...