Its only on the Van. Ute never got the updated GVW. I wasn't the one that worked that out. This was some info that I learnt from Byron a while back when I was discussing a 2000kg XX7 (bris) build sandman I had.

So I don't know the reason for the update. Or why XX7 van got it but XU4 didn't... I have never seen a XU4 HZ tyre placard. So I cant tell. Its a unique placard. hard to find! I collected about 100 hq-wb glovebox lids when we reproduced the tyre placards EXACTLY as original many many years ago. I never found one for a HZ XU4...

Yes its 100% an indication on 78 onwards HZ Vans. 2000kg is 100% sandman. (tags anyway)