GTP VIN change

[Mr. Brett]

Anybody have a Power Tuner or something similar that can do a VIN change for an L36/L67 Grand Prix PCM? We've tried to tune it with HPT but we've got a VIN mismatch issue and it won't let us write to it. All we need is the VIN itself changed.

[PulseRedGTO]

nobody?

[Holeshot]

I can flash the ecm back to the factory software provided the tune is not locked in. I would need the year make model and the vin the ecm came out of.

[PulseRedGTO]

I need to keep the OS the same. This is a gt with a gtp engine and a gt trans. The PCM is coded as such and I don't want to lose the code. HPtuners sucks for changing the vin# on a car like this.
We're getting the OS/Vin mismatch error when we try to write the PCM with hptuners.

I know powertuners will do the trick but nobody seems to have it....

[Holeshot]

PM Tom (Badls1). He knows HP Tuners inside and out. I think he can straighten it out for you.

[BAD LS1]

PM Tom (Badls1). He knows HP Tuners inside and out. I think he can straighten it out for you.

I think they are having issues with HPT that they cant get into it because of the mismatch. HPT only works at changing vins if u can get into it.

[PulseRedGTO]

Correct. Unlicensed PCM's cannot be modified by HPtuners, and vin's have to match operating systems to be able to license. I'm essentially locked the fuck out.

[nitrous]

Have you tried seeing if Fred can get his hands on a Tech2, Andy?