If it has power leveling jacks, this could be the Control Module AND the "Level" it consults to know which jacks have to go which way to level the whole coach. Our 2003 coach has a module under the driver seat and a smaller module under the coach to sense level. On ours you can tell what it is. It's mounted on long screws supported by springs. You get the coach level with carpenter's levels then adjust those screws till the leveling indicators agree that it's level. The springs let you adjust without having to dink with locking nuts or the like.