2000 Buick Century

Remove right wheel and splash guard. Remove serpentine belt. At other end of engine, remove small cover plate exposing bottom of flywheel and brace a big screwdriver against a notch in its teeth.

Get an impact or pneumantic wrench or big 'ol breaker bar for the pulley center bolt. It's plenty tight, regular threads. Get a harmonic balancer puller and, if it doesn't have them, three 1/4-inch fine-thread bolts about two and a half inches long.

Shine a bright light into the slots on the front of the pulley to see the holes to thread the bolts into.