Hi william1214,
It sounds like it could be a fuse (11, 13, 9 and 8) here is the GPS wiring diagrams so you can see how the system works plus a guide to help check the fuses with the fuse locations in the diagrams below.
https://www.2carpros.com/articles/how-to-check-a-car-fuse
Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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Friday, August 13th, 2010 AT 3:00 PM