Join Date: Jun 2015
Location: SF Bay Area, California
This is the route I went - my 2007 Colorado only came with an AM/FM radio and the knobs didn't even work right.
You can shop around on Amazon for a better price on stuff but I chose Crutchfields for ease of ordering :)
Installation took about half an hour taking my time no hurry.
07 Colorado LS, 2.9L, 4L60E, 2WD, 72K (Dec 2015)