P0601 GMC Power Control Module Internal Fault

Possible causes

– Faulty Powertrain Control Module (PCM)
– Powertrain Control Module (PCM) harness is open or shorted
– Powertrain Control Module (PCM) cicuit poor electricl connection
– Low battery voltage

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0601 GMC OBD Code Description