Ok so far I've replaced actuators, selenoid, one of the vacuum lines, 2 check valves and tested the vacuum box and the rest of the lines. My problem is that I still have the occasional grinding from the front end. What else could it be. The problem all started after I had the pro comp 6" lift put on at 4 wheel parts.

 

i think at this point in time man, you've done all you could.

maybe you should take it back to them and tell them you think they screwed up on something.

 

I did. They are the ones that replaced the actuators and selenoid. When that didn't fix the problem they said they can figure out what's wrong (never tested any of the lines). So I just said forget it I'll get it fixed myself. You would think since one of my good friends works thee and I spent over 4 grand in 2 weeks that they would take better care of me than that.

 

damn man.... i think i'd have the truck up on blocks and call your buddy to come over and he can help you... on his time, even if it's over beer.

 

Double check for leaks. Perhaps you just have a bearing going out?

 

Wheel bearings were replaced too.

 

IWE actuators were both replaced

 

Yup both were replaced.

 

got a line leak somewhere

 

I've tested all of the lines. Replaced one of them along with the two check valves.