I am working on a 2011 Chevy with a butler system. The problem started when the system would not build up pressure but still would engage and the pump would still run. after trying to diagnose the water pressure issue the unit just stopped coming on completely. (red light on engage switch) went over the three "usual" problems with butler ( they had me bypass the tank switch, latch relay, soft start and park switch) after all of that the unit would still not come on. All butler could tell me is that it should have come on and to go over those things again (they are not much for help sometimes) which i did and still nothing. Does anyone have any ideas on what else could cause it not to start? i have checked all fuses and ran the wires to see if maybe there was a broken wire somewhere and have not found anything. Any help would be greatly appreciated!