[bestgenman]

Tom, When i took possession of my 2000, it sagged badly on the drivers side. The air springs were leaking , when sprayed with leak detect fluid they would look to be covered with shave cream. After replacing the whole lot, the sagging continued but not as badly. I found the #12 line from the driver side front spring (or bags) was connected to the ballast tank between the frame rails and the tank had a 3/4" weld fitting into which a 3/4 X 1/2 brass bushing was installed. The #12 line used a fllare X 1/2" 90 degree fitting. The bushing was cracked. The bad part is , it is very difficult to gain access and I had to fabricate special tooling to turn the fitting. It was a two day process!!

I know this may not be the problem with yours but the story may be interesting to others!!

Gordon