Piston Cleaning Procedure

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: DO NOT wire brush any part of the piston.

Clean the piston skirts and the pins with a cleaning solvent.
Clean the piston ring grooves with a groove cleaner. Ensure the oil ring holes and slots are clean.