Buying a replacement PCM

[mechguy]

Hi,

I am buying a replacement PCM for my 03 GTP, and sending it to be tuned by Reptile. I have been cautioned to buy only a 2003 PCM for this car. Do I need to have a part # match to my current PCM to guarantee the unknown PCM is from 2003 and suitable? Experience suggests that GM #'s change up often and buying strictly by part # may not avail all options.

When looking on ebay, many PCM's are advertised to fit many different years, models, and engines. I need to be sure it will work.

Any other advice before sending an untested PCM to be tuned?

[bilemke]

If he can overwite the os on it, any one of the following should work:
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[klj5022]

Im in the process of doing that right now i just bought a 98 gtp and having it sent to him and he said he can change it too a 01 gtp 3.4 setup pcm just needs VIN and mods