My 96 has the same problem Dealer told me I could get new one for i think about $215.00. I'm not sure how bad of a job to cnange it. It started a few years ago. didn't seem too bad until blower moter started squeeling like a stuck pig. I went to give a little tap to the blower cover and the cover disintegrated. New cover $75,00, cooling hose $15.00 Blower motor $60.00. Priced out I blower module cover tried to get labour time value to replace it the service coordinator could not tell me. Service manual for 98 closest repair given is to replace evaporator core. Still have heat yet as insulation is still intact. i will just have to decide what i want to do.
Red 1996 SE Parked so sad
White 2001 Montanna EXT
Grey 2001 Nissan Sentra OUCH! cheap car for now