no heat in front or rear of yukon

[OR VietVet]

That is the main one for the auto temp control system. The one I said was without auto temp control. You never did say it was an auto temp system, unless I missed it, and so I looked up for w/o auto temp. You may still have the right one if you have auto temp control. The copy/paste info talks about the cleaning of the old unit and then working so it would be more labor than just replacing but may save you some money if you try that. Bet there is a youtube about it.

 

[KCyukon]

I looked up a bunch of vids and they all vary from which one is getting replaced. A couple show tearing a lot from the dash and a couple from underneath driver or passenger sides.

 

[OR VietVet]

Yea, even if is the one in the middle the work is done from the passenger side floor area because of the room to work.