Circuit/System Testing
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
- Ignition OFF, inspect the CKP sensor for looseness and correct installation.
- If the CKP sensor is loose, inspect the sensor and the O-ring for damage, replace as necessary.
- Inspect the engine for the following conditions:
- Engine oil for debris and contamination
- Crankshaft reluctor wheel for damage
- The timing chain, tensioner, and sprockets for wear or damage
- If debris is found in the engine oil, inspect the internal engine components to determine the cause. Repair or replace any worn or damaged components.