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Thread: Changing factory OS

  1. #1

    Changing factory OS

    I have an 02 Escalade LQ9 411 PCM. There were two operating systems available that year, the latter being more desirable (easier to segment swap to a 4L80e trans, for one reason). If I haven’t yet used any credits on the PCM and simply read it to discover which OS I have, can I simply find the desirable factory OS/cal in the repository and write it entirely to my PCM using only two credits total to have the PCM in the starting spot I need OR will it somehow take 4 credits for the old and new?

  2. #2
    HP Tuners Support
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    Short answer is no

    Long answer is you should not be flashing other peoples files to your vehicle, if you want to update your operating system this should only be done via tech 2 or oem style flash device.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"