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Last night I uploaded GDP tunes to my 20 L5P and it went great, everything said it was happy. Unplugged the unlock cable and the truck will not even attempt to start. I tried to get back in and write the stick files to the ECM and it has me locked out. HP tunes software will not even see the ecm. Any pointers on what to do while I wait till Tuesday for everyone to open back up from memorial day?
Life lesson... DO NOT TUNE ON FRIDAY NIGHTS!!!
Truth - doubly true for Holiday weekend.Quote:
Originally Posted by L5p
I would recommend double checking all your connectors are firmly in place, and disconnect / reconnect the battery, and see if that helps.
I left the batteries un hooked overnight. Let's see if that helps.
ok, sooo after a talk with a tech.. if you have a mess up while uploading you tune reload the stock not in calibration but in entire and you get it right back!