2002 Buick Park Avenue Crankshaft Seal

You need to drill through the center of the heat shield rivets, remove the heat shield from the floor panel, and remove the Oxygen Sensor retainer from the heat shield.

You need to remove the fuel injector sight shield, remove the MAP sensor, next press the access cover down and rotate 1/4 turn counterclockwise, then remove the access cover, the PCV Valve, and the O-ring from the intake manifold.

You need to remove the left and right valve rocker arm cover, remove the valve rocker arm pedestal retaining bolts, next remove the pedestal, the rocker arm assembly, and the Pushrods, then clean the bolts of all thread adhesive, clean and inspect the valve rocker arms and pushrods.