Try taking off all the tires to make sure they are pristine and then put them back on , if that still doesn't work go out of range of the truck (about 1,300 M) and go back to it and see if it moves .. If those fail , try and get someone else to drive it and see if it moves , these three things are little workarounds for when the vehicles are stuck or glitched , hopefully one of them works for you !