The ECM is probably the same, but need to know the operating system loaded in it to see if it is supported or not. There are a few out there that I don't think are supported that GM released to some offroad companies. If it is just a MD truck then chances are it is supported.
1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.
Just before he takes the drive you should be made aware that those 'non truck' applications sometimes use specific 'non truck' OS's, most of these have not had DSP5 written for them. The OS 12620015 is often used in Motorhomes and all 5500 based vehicles, this does not have a DSP5 upgrade option. Normal tuning is possible, just no DSP.
I no longer monitor the forum, please either post your question or create a support ticket.
That is the same OS the Express Van uses (12628740), normal tuning is supported, but there is no DSP upgrade.
I no longer monitor the forum, please either post your question or create a support ticket.