Trailblazer 2004: NAV Radio

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Trailblazer 2004: NAV Radio

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?