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I HAVE A 2012 CHEVY 1500 with 5.3 THAT WE JUST DONE A DOD DELETE. HOOKED UP THE COMPUTER AND DOWN LOADED THE TUNE MADE MY CHANGES THEN TRIED TO INSTALL IN TRUCK AND IT GETS ALL THE WAY TO THE END EVERY TIME AND THROWS Script exited with code $06FF: Checksum failure. I DONT MESS WITH THE E38 VERY OFF TEN JUST Need some help thanks in advance i did try to put the stock tune in it and it threw the same code at the very end
No knowing what versions of software you are running I would suggest updating to this beta and then retrying the flash.
https://forum.efilive.com/showthread...-Beta-Update-3
Then if the ECM has been tuned with some of the handheld tuners out there sometimes they can cause this, do you know if that is the case?
Cheers,
Ross
did the update and worked perfectly i didn't realize that there was a new update out or i would have done that first thanksQuote:
Originally Posted by GMPX