Ok so I did my research before I did this conversion. I had bad air springs and did not here compressor coming on anymore so decided to convert to coil springs. I got OE GM coil springsand skyjacker hydro7000 shocks. I drove it for first time after conversion and the back end bounces over the littlest bumps and I here thumping noises from rear over bumps. I rechecked everything to make sure it was tight. The front end makes no noise. All forums I read said truck rides same after conversion. So I'm not sure what I did wrong. Any help would b appreciated.

 

Maybe snap some pics of the rear setup and we can look if everything has been installed properly. Is the sway bar reconnected?

 

Yea sway bar is reconnected. Let me get good camera to put pics up

 

Note I have factory suspension no lift or anything