H3 Navigation

[Gottmud]

I have a fully loaded H3, with the exception of Navigation. I can get a refurbished GM plug & play H3 Nav unit, at a good price. It would come with map DVD & antenna. I dropped the truck off at the Hummer dealer in Phoenix this morning for the dreaded 'Clunk' in the transmission. I asked if the Nav install was plug & play. he tells me it will not work, because the truck is not wired for the nav unit. is that correct or not ???

Red H3 with all the goodies.