Camshaft Timing Chain and Sprocket Cleaning and Inspection
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Clean the components with cleaning solvent.
- Dry the components with compressed air.
- Inspect the timing chain for binding or wear.
- Inspect the crankshaft sprocket for worn, damaged, or chipped teeth.
- Inspect for a damaged keyway.
- Inspect for worn oil pump drive splines.
Inspect the timing chain tensioner for the following conditions:
- Damaged or broken tension spring (1)
- Excessive wear or scoring on the chain guide surfaces (2, 3)
WARNING:
Refer to Safety Glasses and Compressed Air Warning .