Just wanted everyone to know that it was a bad ground terminal. Cost $4.44 for the part!! Lots of Bud Light was consumed trying to find the problem. My advice to anyone that is stumped with a problem; take it to the dealer and spend the $55 for a diagnostic test before you sink money into the unknown. Just an FYI, blower motor is the same as a 2000 Olds Aurora & 2001 Buick LaSabre, same OEM #. Bought mine at salvage yard for $25, lot cheaper than $253 from dealer. Thanks for all the help and advice. I HAVE HEAT!!!!!