Took me awhile to get it back up but it was pretty quick finding the issue. RS speed sensor pigtail is fubar. It’s part of a sub harness that plugs in above the axle.
I did not word that correctly..I put it on a lift to change oil. It has had a lift installed for over a year now. But I do think I created a break somewhere.
Cold air comes out of the passenger vents immediately but takes about 20 minutes to start coming out the driver side. That's with the temp set on both sides the same. Hotter the weather the longer it takes.