Well got to do a last min. mod to the truck , pulled into the drive and smelled something odd . turns out that the heater core is leaking
Talked to my buddy who is a GM service tech and he said to just by-pass it till you get back as it will not hurt anything , and its not cold out , so we'll fix it when I get back .
Lets hope that a late season cold front don't move in .
stimpy