02 Tahoe a/c w/ rear air control

Tonyrodz

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I would have never found my leak if I hadn't put air pressure to it. I could hear air pushing out of the core when I put my ear down next to the dash.
Same here, but the mechanic was pushing the core through the firewall and heard it hissing too.
 

montegutman

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donmauldin,
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.
Thanks again,
montegutman
 

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