Inspection Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Timing Chain, Sprockets & Tensioners

Courtesy of GENERAL MOTORS CORP.

CAUTION: Bodily injury may occur if the cleaning solvent is inhaled or exposed to the skin.

Clean all components with cleaning solvent.
Dry the components with compressed air.

Fig 2: Identifying Damaged Sprocket Teeth

Courtesy of GENERAL MOTORS CORP.

Inspect the timing chain for binding or wear.
Inspect the camshaft and crankshaft sprockets for:
- Worn teeth (1)
- Broken teeth (2)
- Chipped teeth (3)

Fig 3: Identifying Damaged Timing Chain Tensioner & Chain Tensioner Slides

Courtesy of GENERAL MOTORS CORP.

Inspect the timing chain tensioner (1) and timing chain tensioner slides (2) for excessive wear or cracks. Repair or replace as required.