Recent content by Trailblazer 2004

I have a GMX222BTNAV1 (DELPHI 25801749, GM 25801749) NAV radio. Can this radio be installed in my Chevy 2004 Trailblazer? If so, is there a wire harness for it that will make it work? How can I acquire a wiring diagram of the 4 connections on the back of the unit? The radio of off a Buick...