I'm gonna try them, I bought them on Amazon and they are good with returns so I figure if I don't like them I will send them back

 

I would work on getting the front under control.

Shocks alone will not do it. They might band aid the issue for a little while, but the real problem is that you don't have the right spring rate's to control the front. This will compound the issue in the rear and make it fell stiffer than it real is.

 

As kyle said some coilovers would do you nicely

For the back, try removing the caltracs first just to see if that helps. I know if I have my traction bars preloaded any at all the ride gets dramaticly stiffer. Going over speedbumps is like being a covered wagon.

 

new shocks all way around, 2500 torsion bars up front and youll need some weight added to the *** end...this will help the most

 

Can you guys explain to me the differences I'd see between springs that were too soft and shocks that were too soft in the front?

Also, back to my original question, is anyone running a single leaf spring in the back instead of the two that are in the pack? I removed the overloads awhile back but I am thinking that I could soften the rear by removing the second leaf and putting the overloads back in to keep the height the same.

As far as the caltracs go, I do not have any preload on them...I actually have 3 full turns of negative preload, meaning that there's about a 3/8" gap between the roller and the leaf spring when sitting static, so I don't think that's the problem. I will test though, I want to remove the bars and the rear shocks and see if the problem goes away. I have a feeling that the rear springs are too stiff now though since the weight distribution has shifted forward with the Duramax and removal of spare tire, muffler, and trailer hitch.

If it comes down to the torsion bars being too soft I'll go coilover instead of swapping to the 2500 bars. Been thinking about that anyway, just had other stuff to spend the $$ on.

 

coil over gonna ride worst for the amount of weight up front of that motor

 

Shocks that are too soft you will experience oscillations that take a long time to dampen out. With springs too soft you will see a large amplitude and low frequency (takes a long time) of the oscilation. Sometimes it is hard to tell which problem you have. But in general if you get too much movement, the spring is too soft, if it takes too long to stop bouncing around the shocks are too soft.

 

I'll try bouncing the front of our Yukon and compare to my truck and report back.

Why would coilovers be worse with more weight? I thought that as long as they were spec'd correctly they would be fine?

 

They will be fine as long as the spring and shock is appropriate. There is a guy in Flordia that can revalve QA1 shocks to be stiffer. I thought about sending mine to him, but never got that far. It may be an option for you though depending how much extra weight you have and how they work right out of the box.

 

Chris, there are a couple of guys on the forum that have removed the middle leaf, kept the overload leaf, and added traction bars. But I can't remember who...

It doesn't cost anything to try, besides your time.