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Hoping I can get some input from you all on this:
I tried to read the (what I thought was stock) TCM on my T43 in a 2016 Chevy Colorado Duramax. I ran into an error when trying to read the file and talked to my new tuner. They told me I’d have to re-link to the previous tuner’s FlashScan, then have the previous tuner send me a stock/unlocked TCM file and then Full Flash the TCM.
I have concerns with this suggestion from the new tuner as I ran into the same issue with the previous tuner, I wasn't able to read the TCM. The previous tuner's solution, back when I first started working with them, was to just send me their tuned TCM file and had me Cal Flash onto the TCM. I still remember them telling me to "do a Cal Flash and if that doesn't work try a Full Flash".... The Cal Flash didn't pop up with any errors so I thought it was all good, therefore I didn't bother trying a Full Flash on the TCM.
When I went my separate ways from the previous tuner, I Cal Flashed the Stock TCM tune that they provided and went on way.
My question is, can I just Full Flash the TCM with the new tune file and also have the new tuner send me an unlocked factory TCM file just in case I need to go back to stock? My understanding of the Auto-Lock Calibration feature is that it prevents the tunes from be read from the module. But one still can full flash over an existing tune on the module. Is this correct?
I tried to read the (what I thought was stock) TCM on my T43 in a 2016 Chevy Colorado Duramax. I ran into an error when trying to read the file and talked to my new tuner. They told me I’d have to re-link to the previous tuner’s FlashScan, then have the previous tuner send me a stock/unlocked TCM file and then Full Flash the TCM.
I have concerns with this suggestion from the new tuner as I ran into the same issue with the previous tuner, I wasn't able to read the TCM. The previous tuner's solution, back when I first started working with them, was to just send me their tuned TCM file and had me Cal Flash onto the TCM. I still remember them telling me to "do a Cal Flash and if that doesn't work try a Full Flash".... The Cal Flash didn't pop up with any errors so I thought it was all good, therefore I didn't bother trying a Full Flash on the TCM.
When I went my separate ways from the previous tuner, I Cal Flashed the Stock TCM tune that they provided and went on way.
My question is, can I just Full Flash the TCM with the new tune file and also have the new tuner send me an unlocked factory TCM file just in case I need to go back to stock? My understanding of the Auto-Lock Calibration feature is that it prevents the tunes from be read from the module. But one still can full flash over an existing tune on the module. Is this correct?