Help with NAV install

[gatorsdogg]

Hey, I read that post....now im more confused than before.. They are sayin that ALL 05's came with PREMIUM amps..not "lux" amps...and that you need a "premium" NAV....i've never heard that before....i do have the y91 in my glovebox but after calling Hummer today, they said that is the speaker configuration NOT the amp..they even went on to say that I have no amp...all hummers have amps right?

I feel like just scrapping this unit and going aftermarket at this point...its very frustrating...everyone I talked to today, including Hummer, has different things to say...

Any other help would be GREATLY APPRECIATED...Thanks