The blower resistor by the blower is corroded and needs to be replaced. As
>> Stay informed about: '98 Cavalier - Fan and Rear Defrost problems
for the defroster there is probably an open in the element or all elements.
Scratch on window or broken at the connection. Possible bad switch or fuse.
Measure voltage at connections to isolate or take it to a mechanic if you
are not proficient on electrical troubleshooting.
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> Does anyone have an idea why the rear defrost in my '98 Cavalier won't
> work anymore? Also, the fan only works on the high and very high
> settings. If I set it to low or very low, it won't work. I checked the
> fuses and even replaced them -- it still won't work.
> Is there anything else I can do or do I have to bring it in to get that