Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
This diagnostic trouble code (DTC) monitors the crankshaft position (CKP) and the camshaft position (CMP) signals to determine if they are synchronized. If both signals are not observed by the control module within a narrow time window, the vehicle control module (VCM) will determine that an error has occurred.
In order to diagonisis this trouble code you will need a scanner that will read codes and command modules and solenoids. If you need anything else please ask?
Important: If the CKP System Variation Learn Procedure cannot be completed successfully, refer to DTC P1336 Crankshaft Position (CKP) System Variation Not Learned for additional diagnostic information.
Important: After the ignition switch is turned to the CRANK position, the VCM must see a change in the state of brake switch (Released to Applied) to run the learn procedure. Also, the service brakes, and the parking brake, must be applied throughout the duration of the learn procedure.
Important: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is returned to the operator and the engine will respond to throttle position after the learn procedure is complete.
need help on a 1999 Chevy K3500 pickup with a 7.4 L