Piston Cleaning Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Clean the piston skirts and the pins with a cleaning solvent. DO NOT wire brush any part of the piston.
Clean the piston ring grooves with a groove cleaner. Make sure the oil ring holes and slots are clean.