I have 97 & the heater motor was not working plus the interior lights do not work. I did find that the INADVERT 50 fuse was blown so the easy fix was to replace it - wrong. As soon as I put the fuse in (car was not running) it cooked it. Dealer said that it was the blower motor? Not sure if this is the correct answer but have ordered a new ACDELCO blower motor & relay. Would the fuse blow if the car was not running? Thanks for any help.