how is the antenna ran in 1996 pontiac transport

Hi toolcrib1! The Trans Sports antenna runs under the roof, in between the roof and your headliner. You can probably get some tips from the parts counter guy at your local Pontiac dealer as to how to replace it if for some reason you need to. The bigger issue if you are switching out from a factory radio is that you'll need an adapter to fit the factory antenna to any system other than the factory system. These guys will be able to hook you up for under $10 and they will also be a good source for installation help http://www.tune-town.com/Cars/stuff/Pontiac/1993-96_Pontiac_TransSport_APV.htm. Good luck!