P0336 GMC Crankshaft Position Sensor A Circuit Range/Performance

Possible causes

– Faulty crankshaft position sensor
– Crankshaft position sensor harness is open or shorted
– Crankshaft position sensor circuit poor electrical connection
– Signal plate may be damage
– Starter motor may be faulty
– Starting system circuit
– Dead or weak battery

When is the obd code mean?

The crankshaft position sensor (POS) signal is not detected by the Electronic Control Module (ECM) during the first few seconds of engine cranking

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Lack/Loss of Power
– Engine Stall

P0336 GMC OBD Code Description