Crankshaft Balancer Cleaning and Inspection

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the crankshaft balancer for damage.
Inspect the outside of the crankshaft balancer mounting shaft for grooves.
Replace the crankshaft balancer if grooves are present and appear to be causing an oil leak.

Fig 1: Crankshaft Balancer (C, H, W)
Courtesy of GENERAL MOTORS CORP.