My genesis 46 won't move. The engine just rev's and the wheel's won't turn when there is any weight on them. They will spin when you hold the truck in the air but they have no power. I thought there was a gear stripped in the center transmition but everything seems intact in there. Could both the front and rear diff have gone out simultaniously, or is it something else. Some help would be appreciated, Thanks

did you check the grub screws on the dogbone that comes from the transmission to the diffs?