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GM Nav: Dvd work out of park?

2K views 8 replies 4 participants last post by  jonyb 
You might search google for "gmc nav hacks" or something similar

I did some digging before and came across some links that said what re-wiring had to be done to make this work.

A few bucks of wire, some time, and you should be good to go.
 
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