PAC GM1AR / GM1A-R / GM1A-R RadioPRO Advanced Interface for General Motors Vehicles

the vehicle i'll be working on today is a 2009 chevrolet trailblazer the stereo i'll be installing today is the pioneer avh120bt this is a double dense stereo with features such as bluetooth usb mp3 playback dvd playback and steering wheel controls there may be extra components needed depending on what vehicle you're installing your new car stereo in and a radio replacement interface module such as this one may be necessary modules like this can retain stock car stereo features such as onstar steering wheel control amplifier control and other premium stock car stereo features and this is compatible with multiple different gm vehicles including the chevy trailblazer another item that may be needed is an antenna adapter also for most cars a car stereo dash kit will be required these kits allow you to mount the aft market car stereos inside the stock car stereo openings and to slice togeth