What makes the pulleys squeak on 1996 Pontiac sunfire?
This is almost always caused by worn drive belts. Replace all
the belts at the same time. If it has a serpentine belt, then
replace it. Be sure and check the idler pulley to make sure the
squeak is not coming from the idler pulley itself. Another
possibility is a bad alternator, water pump, or power steering
pump. Check them all.