03 Trailblazer Install

Hi all,

I am getting ready to do a full install on an '03 Trailblazer.  It has Onstar, a six disc changer but no bose.  We will be keeping the factory head unit, but replacing all the speakers.  We will be adding 2 amps, one for bostwic subs and a four channel for the component set and rear fill.

Here is my question.  Is the PAC AOEM-GM24 the right interface for my project?  Is there any other interface connectors I may need?  Does this trailblazer have an amp already installed and if so where is it located?   Also can I come behind said amp and tie in to the factory wiring for my new set up?

Any help or advice will be greatly appriciated.

Thanks,

Cousin Cleotis

FYI 

03 install came off smooth as silk. Pulled all new speaker wires, and the AOEM-GM24 PAC was right.

Sounds Great!!

Good to hear