hoot, that's a similar system I used when I was driving a Freightliner diesel pusher motorhome. Had all the gears on display just to the left of the steering wheel, all you had to do was push the button and it would shift. It also had an auto shift button where it would do the shifting without button pushing. Kinda cool because it was the first time I saw it and used something like it, I agree though, not something you would put on the DMAX.
LA DMAX
2002 GMC 2500HD SLT 4X4 DMAX/ALLI CC/SB G80, loaded. Pewter/Pewter<br />Add ons: Line-x, Star shield, catch alls, Transynd.