I know there are plenty of posts on these navigation radio installs but I'm a little short on time and I'm working a turnaround. I'm trying to get everything I need to install this before I leave on a big trip at the end of the month. I just won this on ebay earlier but I think I'm going to need the antenna and there's no nav cd nor any cables. The part number is GM 15852515 and it came from a yukon. I'm installing it in my 09 sierra slt with the bose system. Can anyone tell me what I'm going to need to order before I install this unit.
Thanks

 

If I'm not mistaken you'll need the harness for that specific unit. I tried to do a similar setup in a friends truck, and an aftermarket nav unit plus install items were cheaper than the harness(not including labor to flip harnesses)

 

The unit I bought is a factory nav unit out of a Yukon. I'm pretty sure it will plug right in minus the cable for the gps antenna. I could be wrong on that though.

 

Does anyone know what the small black box in the middle is?