Conditions for Setting the DTC
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The difference between the actual and expected CKP position as calculated by the CKP sensor and CMP sensor is more than 6 degrees of crank angle or more than 12 degrees of cam angle.