Yeah it has the EQ built in, it is probly the exact one you have. It uses the steering wheel controls, and my car has onstar so if your GTP has onstar you should be able to hook that up too. I know for a fact that pontiac has been using the same cd players for several years. The only thing is I would want at least $200 for it. Not that I dont wanna sell it to you, but for that price you could buy something decent aftermarket, plus Im not sure how I could get it to you. Any ideas on that let me know.