I have a 2005 GTO putting a new (used) PCM in and cant get the vin change to work. Both PCMs have the same #'s on them 12596733 & 12597191
I have tried the vin change and hit commit did the wait 15 seconds and then 30 seconds on/off 2 times
I did a write entire
The car will not even turn over with the new PCM
Am I missing a step some where
Any help is greatly appreciated