P0336 Chevrolet Uplander I

1. The ECM detects that the engine is running, but receives less than 51 or more than 65 CKP sensor pulses each engine revolution for 8 of 10 engine revolutions. OR
2. The ECM detects that the engine is running, but more than 19 resyncs occur within 25 seconds. OR
3. The ECM detects that the engine has been running, but the crankshaft does not sync for 0.4 second.

Action Taken When the DTC Sets

1. The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
2. The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
3. The CMP actuator is commanded to the home or parked position.
4. The ignition system defaults to a limp home mode. The CMP sensor is used to determine engine position.