Welcome to the gang Jane and Graeme, enjoy here and out in the playground.

Mmmm, I wouldn't mind a GMC when I grow up, some would say, If I grow up. I do have a baby GMC though, my Colorado and love it.

Make sure you keep checking in and letting us know how you are travelling. I can't help with your question as I haven't been that way yet.

The Oodnadatta Track is basically a wide gravel road, with some sections of corrugations. We took our 21ft van along it, and many other vans were also travelling it at that time, we were able to travel at about 80k on much of it, but did slow down more in some areas with heavier corrugations. In the dry there shouldn't be any problems for a van of any size if driven to the conditions with slightly lowered tyre pressure. If its been raining recently though it often closes and can become unpassable for several days, so always check before you go www.dpti.sa.gov.au/OutbackRoads/outback_road_conditions/area_3_oodnadatta_track

Thanks Blaze.

Agree with Meredith.
As well as corrugations which can vary depending on how much traffic and how long ago it was graded there is also the problem of stone damage to the van. These long major gravel roads are generally in good condition which causes trffic to drive too fast. This results in stone being flicked up off the road, especially from the tugs back wheels, at great velosity resulting in damage to the van. So take it slowly. If possible protect the front of the van. The best way is to fit a Stone Stomper, about the only real defence your van will have from this type of damage.

We took our 24ft from Coober Pedy-Oodnadatta-Maree last year with absolutely no problems at all. Go for it.

Same here 25' van No problems apart for corrugations.
Landy