Timing Chain and Sprockets 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 timing chain sprockets for teeth that are worn (1), broken (2), or chipped (3).
Inspect the timing chain for binding or stretching.
Inspect the timing chain dampener for excessive wear or cracks.
Replace the timing chain and sprockets as needed.

Fig 1: Inspecting Timing Chain Sprocket
Courtesy of GENERAL MOTORS CORP.