I just bought rancho 9000's for my 2003 2wd 1500 QC, they make the front alot more comfortable for the 2.5 inch lift on the front. But the back is a totally different story! everytime i go over washboard type bumps my backend tries to come around. I have adjusted the shocks from 1-9 and still get the same result. also there is alot of bounce in the back end, We just been calling it the head bob. So what do I do? should I trade out the shocks cause they are defective? Or is it something I did during the installation? Thank you for your help

 

The 9000s are really an off-road shock. Nitrogen filled and are supposed to be stiff. Great shock but to be honest I find the adjustment deal a gimmick. I have them and have been in a couple of trucks with Pro Comp MX shockes with the adjustment also and my butt sensor can't tell a difference between one end of the adjustment and the other.

The 9000s are a nitrogen filled shock. Nitrogen has an atomic weight of 14.00674. You may find you want a hydrogen filled shock as hydrogen has an atomic weight of 1.00794 making it MUCH less dense than nitrogen, hence it will yield a softer ride.

The reason the front is so smooth is the weight of the engine and all engine components sitting right on top of them. You could add a couple hundred pounds in the bed and it'll smooth 'em right out, at a little sacrifice of fuel economy unfortunately...