Help: VCM read failed: 6700 error checksum

[gazgab]

Hello,
I want to read the program and my Calculo HPTUNER wrote:
What does it mean? Can someone tell me?
Thank you for your help.
gabriel

[Bill@HPTuners]

Usually means the pcm has been previously modified from stock(possibly with a handheld programmer) and the checksums corrupted.

[gazgab]

The PCM has already been modified with HP Tuner.
Do you think the PCM is locked? because the person who has rescheduled a bum ...

[Bill@HPTuners]

PCM isn't locked thats for certain. The only suggestion I have is to get the original file that was read from the pcm by the previous tuner and you should be able to use that as your base.

[gazgab]

the previous TUNER, who was professionnal, closed his shop
Do you have any other way?

[Bill@HPTuners]

Tech 2(dealership flash tool) flash to stock and then reread with our software.

[bonylad]

I was advised (as I have the same sit.) to take a stock tune to whatever you plan on using from the repository....Flash/Write Entire. From that point your dealing with a .hpt file and not a .tft file. Will work so I am told.

[TexasGMC08]

This should fix it... I fixed in person (due to handhelds) and I recall flashing them entire with a known good file..

Try a write entire with a known good file. You will have to license that file (unless you already have a license for it) and the ECM (which you currently cannot read)... If it still throws the error (which it shouldn't) But that's what the fix for me was..