That is an adapter for your antenna. When you pull your old radio out the car antenna should be connected to the back of it. Pull out the antenna and plug it to the adapter and the adapter goes to the new radio.
yes. most gm vehicles will probably use this adapter. unless it has a gm cd changer installed by a dealer and if there was a n oem tape deck radio. some dealers used a fm modulated disc changer but even then, it should still plug in.
I have a 2002 chevy monte ss and someone stole the antenna that screws into the mounted bracket on the back glass. I just need the piece that screws on. Will this work?