Balance Shaft Cleaning and Inspection

WARNING: This page is about a different car, the 2004 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Inspecting Balance Shaft

Courtesy of GENERAL MOTORS CORP.

Clean the balance shaft.
Inspect the balance shaft bearing/bushing journals for excessive wear.
Inspect the balance shaft driven gear and the balance shaft drive gear for nicks and burrs.
Inspect the balance shaft retainer for damage.
Inspect the balance shaft threads for damage.
Repair or replace the balance shaft components as necessary.