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Unknown pcm
Posted: Sat Oct 25, 2014 5:35 pm
by Cruze99
2009 hummer h3 getting unknown pcm pcm calibration my vin might need an update attempt a back up read need help please don't
Re: Unknown pcm
Posted: Mon Oct 27, 2014 10:39 am
by mikel
can you let it read the backup file and post it here please?
Thanks
Re: Unknown pcm
Posted: Sat Oct 17, 2015 11:20 am
by clandman
Any luck on this. Mine will not read my 2009 h3 5.3 l
Re: Unknown pcm
Posted: Mon Oct 19, 2015 11:01 am
by mikel
try this update, save to the i2 drive and let the tool import it then go to the vehicle and try again.