I have a 2013 Cat GC70K with no hydraulics. There is a solenoid on top of the hydraulic control valve that is getting power, but nothing happens on any of the 4 functions. There is usually a unload solenoid fuse that blows in this type of issue accompanied by no forward or reverse, but this has directional travel, just no hydraulics. There are 2 wires going into the solenoid, one has power, meaning the seat switch is delivering power and the fuse isnt popping. You have to remove control valve to replace solenoid, I am hoping someone has a better plan?