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Makes 🢒 Chevrolet 🢒 2008 🢒 Tahoe - 4WD 🢒 Bulletins 🢒 Blue Or White Dots Displayed On The Navigation Screen - keywords body direction disc DVD enetrtainment guidance loss map n2 off radio receiver road route software street white

Blue Or White Dots Displayed On The Navigation Screen - keywords body direction disc DVD enetrtainment guidance loss map n2 off radio receiver road route software street white

Subject:Blue or White Dots Displayed On the Navigation Screen

Models:2007-2008 Escalade Models
2007-2008 Chevrolet Avalanche, Tahoe, Silverado, Suburban
2007-2008 GMC Serria, Yukon, Yukon XL, Denali, Denali XL
2008 Hummer H2
with Navigation Radio (RPO U3U, U3R or UVB)


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

Some customers may state that the navigation screen displays a pattern of blue or white dots all over the screen. See Photo below.


Object Number: 2006425 Size: SH

(1) Off Road Path

Recommendation/Instructions:

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 will show the path being traveled by the vehicle when not on a marked road. This path will be a simulation since the map database coverage will not have these roads on the DVD. This path will be stored in the navigation system's memory, the blue/white dots can be erased by turning off the "Off Road" mode.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.