so i just got a bagged truck a 98 silverado. it has 1/2 in fills and 3/4 dump valves. well they all work usually, but sometimes like today after work i got both fronts to air up and the rear driver side to air up. when i hit the switch to air up rear passenger it dont click like its supposed to, also the rear driver side will air up but not air down. i checked the wiring to see if i could find any bad connections and what not, but i didnt find anything. it has done this to me but after a few tries it worked again, today nothing seems to work. sorry if this post is confusing i dont know much about air ride yet, i am used to driving a lifted truck lol.

anyone please help, i need this problem fixed soon.

what company valves are they? It sounds to me like you have a couple valves that are sticking. Depending on who's valves they are, they should be rebuildable.

With 3/4 dumps, how fast does that thing lay out?