This information applies to 2007-08 full-size utilities and 2008 Hummer H2 with Navigation Radio ( RPO U3U, U3R or UVB). Some owners may observe that the navigation screen displays a pattern of blue or white dots (fig. 11).
The blue dots (white dots on Escalade models) are a path that is used in the off-road mode. When the off-road mode is turned on, the navigation system shows the path being traveled by the vehicle when not on a marked road. The path is a simulation because it is not following a road in the map database coverage on the DVD. This path is stored in the navigation system's memory. The blue/white dots can be erased by turning off the Off Road mode.
- Thanks to Paul Radzwilowicz
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