P59 write transfer timed out... and Download boot transfer data timed out
I've been messing with this 2003 Silverado and at times it will write with no issues and other times I get write transfer and boot transfer timed out messages. I have done it all from Re-synced the MPVI 2 removed radio fuses, removed the radio itself, done it on a battery charger disconnected the battery. Then sit may write again after then battery or may not, its a guessing game as to when this will work!! Open to any and all suggestions going on 2 weeks with trying to help a friend out and its beyond frustrating since you never know when it will or won't work!!! If no one has any options I'll open a Support ticket
TIA for any suggestions