Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
what brand and model shocks?
did it bounce prior to the shock replacement?
how many miles? did it have factory kyb shocks? sitting still does it pass a shock bounce test?
I say its the shocks... These trucks generally came new with a high end kyb shock.. If it moves a lot when bouncing it the shock is not strong enough to do its job.. I would pull those shocks and up grade... kyb, rancho rough country etc