Originally Posted by sgtsandman
If the old shocks lost their preload, the new ones will lift the truck up some.
Shocks can't pull a truck down if they lose their preload. If that were the case, it would pick the vehicle up off the springs.
Have you ever removed a set of shocks that were application specific and seen a truck drop?
All shocks are there for is to dampen the bumps a vehicle goes over on the road, nothing else. The springs do all the holding of the weight of the truck.