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i want to buy and install one ,wondering can i still use the same exterior antenna and will it mess up onstar?
is it difficult to install a 2din dvd/nav deck into 07 tahoe(i dont have bose)

Not enough info. but as for navigation... no antenna, really... its so easy to install a Nav. Get a portable nav like a Garmin Nuvi because you can take it anywhere. Including your friends cars and lte them do the driving.

get a pioneer nav single din flip out thats what i put in my escalade but if you go a bose audio system in it you will need to put a amp to the speakers
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