Leaking anti freeze
coolant will drip under pulley bearing. the weep hole will have a coolant leak. use a mirror and u will see the hole.
to add, it will sometimes make a noise and wobble.
Where is the pullie
Looking for a Used Lucerne in your area?
CarGurus has 3,398 nationwide Lucerne listings starting at $1,988.
Search Buick Lucerne Questions
Buick Lucerne Experts