Quote:
Originally Posted by Waiting on my Black H3
There is a bypass so you can use Nav on the run. Go to the Tahoe forum and you will find part number to buy. tahoeforum.com
I have been interested myself. Have a 2006 H3 since July 05, and now wanting to purchase a new Black 2007 H3 with factory Nav. ALso want to hook up a rear camera to it like the Tahoe has from the factory. 
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I do not know if it is the same thing, but I have heard of a company called Lockpick that makes a device that you connect to your factory headunit to allow you to use navigation and DVD functions while moving.* It might be similar, and might be worth checking out if a VSS bypass doesn't work on the newer headunits.