Qustion about diesel vs. fuel vehicles

[PRAY]

I need to correct the speedo on a 08'-09' Duramax. Just wondering if it is the same as doing it on a regular car? I don't want to tell this guy I can and then end up not being able to. I have V2. Will a normal V2 liscense work? Thanks.

[AFTERMATH DIESEL]

Yes it will and all it takes is a license.
The speedo calculator is the same on all Gm vehicle I've done so far.