You took way too much crap apart there. A limited has a small black box in the passenger foot compartment above your left foot if your setting in it. Has a plug on it. Your worm gear is likely stripped. My 99 was like that. Took it part rotated it's little to use new teeth and I works fine. To affirm that is the problem turn it to heat and are if the control valve outside opens. I'd you can't fix the gear box, simply remove the cable outside and move the valve by hand and leave it there.