Generic
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    Crankshaft Position Sensor "A" Circuit Intermittent

GM
Type:
    Powertrain - Ignition System or Misfire - ISO/SAE Controlled
Description:
    CKP Sensor Circuit Intermittent Conditions
Cause:
    Engine running, MAF input 5 g/sec or more, and the PCM detected that the measured change in engine speed was 1000 rpm or more during a 125 ms period, or that the measured change in engine speed was 0 rpm during a period when four or more CMP sensor pulses occurred over a period of 2-3 seconds