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
– 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 Description
The Powertrain Control Module (PCM) EEPROM contains data which is essential to running the engine and transmission. The PCM continuously tests the integrity of this data.
GMC Technical Service Bulletins for P0601 code
2008 GMC SIERRA POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2008 GMC SIERRA DENALI POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2008 GMC YUKON POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2008 GMC YUKON DENALI POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2008 GMC YUKON DENALI XL POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2008 GMC YUKON XL POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2010 GMC TERRAIN POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2007 GMC ACADIA POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2008 GMC ACADIA POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)
2009 GMC ACADIA POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM, PCM)