Glad to hear ya found that issue so easily.
If your into doing Dmax conversions and don't have a buddy with access to GM tech files online, next best thing I've found is at ALLDATAdiy.com
For about $17yr, gets ya access to all the required ECM, wiring, and sensor diagrams, along with those plug pinouts, "part numbers" and plenty of other useful info. I printed out most of the wiring related stuff, added some notes and built a custom marine harness. Next one should be a breeze now.
Cheers,
-K