ok i have 31" tires a lift of like 3" i think i just got the truck its a 91 silverado ext cab.. when i go over a speed bump or something like that , to where it makes the tire go up and down it makes a popin sound almost like a knuckle .. any one know what im talking about ??? please get back to me

thanks

 

hey if you havent figured it out yet it sounds like a broken sway bar link and if its not that check your ball joints and upper control arm bushings.

 

Also check your shock mounts and bushings. I had bushings go out with similar (but not same) sound. But if they are worn or gone you could have some space between.