Search:

i had the p0300 code come up on my 98 k2500 L31 and it needed a crank relearn then it was fine after that

if you buy a MPVI2+ you just need to buy the credits needed to unlock the ecu then you can change whatever you want with the 4wd and the gear/tire change wizard

You'll need to find Lextech here on the forums and he'll ask you to email him your name, email, year, engine and transmission your truck has then he'll tell you which spreadsheet you need and he'll...

You should be able to look find a stock tune for a 5.7 and 4L60E in the repository that'll be close to what you need