Sorry meant to post this a long time ago , but John it WAS the core itself.. i took the dash off my 2014 silverado.. replaced the evap core and put everything back.. vacuum and refilled with freon and everything worked out very well.. now i turn on the truck and within i want to say 5min .. it start...

So new on here, tried looking at other posts about this issue but couldnt find any, but man this has me wondering These days in southern texas have been cold/fresh so i hadent noticed.. but 1 hot day i open my truck and it smelled damp/humid.. i lift the floor mats and the truck floor is soaked.. dr...