Well from what you are describing i would say, yes, you do need new shocks. Being a 93 and still stock i would change the shocks. A quick way to tell if they are done, is to bounce the vehicle on each end then let go and count how many times it bounces before it stops. If it is more than 2, the shocks need replacement. The rear will be kind of hard to tell because it will come back up and stop normally, unless they are absolutely destroyed, but if you want to really improve the ride get new shocks. But get shocks that suite your lifestyle, if you offroad get shocks that are made for it. If not then get shocks for ride quality. Eg:I have a 91 XL and just put monroe sensatracs on all around, for now i don't do much offroading so i went with a shock that will work on road. Next year i will lift the truck and increase tire size and use it for offroading, at which time i will replace the shocks with Rancho 9000's. So it all depends on what you use the truck for too. For a first gen, i would recommend, (and this is my opinion is all) Monroe reflex in the front and Sensatracs in the rear, if you don't do much offroading. Sorry for the novel here. Later.
