You replaced the heater resistor, but how about checking the wiring harness! Also the connector that the resistor connects to was also burnt on mine. After a good drive temp remove the blower motor and smell. Just my 1.5 cents!

2001 Cavalier
150-175 more kms
per tank of same size
Pioneer 12 CD Changer

SOLD Green 98 Mystique
GS Sport
Zetec ,ATX
885 Fogs mod.
Hi beam mod.
205 15s