So, its a 2006 silverado work truck. Some IDIOT decided that because the fan wasnt working on speed 3 and 4 they would KICK the box under the dash. Which in turn probably worked b/c the plug is right there.

Well the idiot put a hole/crack in the box. Now with AC season upon us it leaks terribly with condensation depending on how long the AC is on and how you drive. I tried plastic welding it using a piece of wire mesh 2x now and covering that with universal plastic. Today I cut it off and noticed another crack I had previously missed, so I RTV that and plastic weld again. STILL LEAKS!

Im thinking I need to cut it all off and use fiberglass, IDK what else to do and a new box isnt gonna happen-its alot of work to replace!