i'm about to order my tune, i looked and saw a 4-digit with 3 letters and 1 numbers, towards the very bottom closest to the ground, between the fill and fuse box, kind of by itselft, is tht my calibration code?
Why not be on the safe side and read the strategy with your hand held tuner directly from the PCM. PCMs get reflashed by dealers all the time and the sticker on the PCM does not get updated.