Thanks so much for taking the time to find and share the video. I will do this "shortcut" method if/when necessary to replace my evaporator.
You have saved me from selling my trusted old truck had I have to go back into the dash. I did the replacement of all four door motors without cutting anything, and it was somewhat a nightmare! My 2005 K2500 Yukon XL LT with 6.0L and MT1 Hvy Duty Transmission currently has 85K miles is still in excellent condition; so, though I do not need the 4Wheel drive any longer it is nice to have when towing/launching my boat and buying a replacement new equivalent is in the $70K MSRP range. These forums and Participants are a lifesaver.