2003 chev tahoe keep fac bose amp

I am putting a pio avic-n2 unit in my 03 tahoe and would like to keep the factory bose amp,is there a harness for this or is it even possible. anything would help thank you

SoundGate DIGISTAR-X. Retains OnStar (if equipped) door chimes and integrates with the BOSE amplifier. Jazzy

Check out Pheripheral products. They have units that work great and fit your vehicle correctly depending on the options it has. They allow your Onstar system to work, keeps the chimes and give a switched source of power for your new radio. They plug into the vehicle harness and there is very little wiring left for you to do. The wire colors even match for your Pioneer.sparky