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gm just called and there software will not let it put a factory tune in it either so guess that theory did not work.. ideas and or thoughts?

it is a 5 position and four clicks.. one setting is a...

okay well i will just leave the dsp5 on it and let gm re flash to stock, and then i will be addressing the over heat issue into limp mode after knowing it is not tune related.. truck is useless not...

so to be clear u can have re flash with a tech 2 from gm and or his efi tuning with a stock tune file will work.. neither system is even able to read tune files all fuses are good for communication...

i work better by phone if gmpx u would call me.. 573-450-2538 Thanks

well should i just let gm reflash it first try before my buddy does a reflash and changes the vin with efi? im okay with loosing function of dsp5 cause i have no clue what is what and my over heat...

EFI tuners? this is a recently purchased truck and has a dsp5 knob, but my hp tuners will not pull files nor will my buddy efi software so we assume it is locked.. i have reseached and seen where...