Can't get my 4x4 working it the actuator pump is working the shifter feels like it's going into 4x4 but it's not, anyone know what else it could be? The guy I bought it off of said he unhooked the 4x4 he said it's a cable with a hook on it that hooks onto something but I can find what he is talking about

 

I'm also dealing with 4wd not working on my 03 ZR-2. My actuator pump is working and supplying about 5 psi but the actuator inside the differential will not hold pressure. I'm getting ready to open up the differential and see.....

Neal