How do I install aftermarket Speakers in the CTS or CTS-V

1: Ensure the manual lock knob (1) is in the unlock position.
2: Insert a flat-bladed tool into the top service notch to disengage the locking clip (2) located at the front of the manual lock knob (1).
3: Remove the manual lock knob (1).
4: Remove the inside handle bezel (1) from the inner door panel in the following order: (I was able to do this by hand without a screw driver) A. Hold the inside handle to the open position. B. Insert a flat-bladed tool at the front lower corner of the bezel. C. Pry outward on the bezel. D. Remove the bezel from the inner door panel. Watch out on the Front Door the unlock button has a plug that needs to be removed before sliding the cover out
5: Insert a flat-bladed tool at the top of the trim cover and pry out to remove the cover. (I was able to do this by hand without a screw driver)
6: Remove the door trim panel screws (2).
7: Now you are ready to remove the door panels. I just grabbed the handle and gave it a good tug to pop out the snaps. Once you get the sides and bottom of the panel free just life up a tad on the handle and that should get the top unhooked. Be careful on the front door trim around the power mirrors.
Front Door;
Back Door;
Front Door Procedure
8: Remove gold screws to release 6.5" speaker A. I had to remove the black mount to get more slack for the positive and negative wires.
9: Install new speaker
Back Door Procedure
10: Back speaker is 5.25", front mounted and part of the door panel
11: You will need a GM Harness Adapter so your not cutting your factory wire harness A. I bought this at Circuit City
12: Now put everything back together