not honda/acura related h: but i have a feeling some of you can help, esp. NightShade

story: so yesterday im on my way home from a weekend of camping in the Ram and i hit a few bumps. i have solid front and rear axles cuz IFS in trucks is for girls and urban wannabe cowboys. the road was a little bit wet and when i hit those bumps, i damn near lost the truck @ 55 mph. damn adirondack roads

can anybody explain to me what a steering damper does and how to know if mine needs to be replaced? this is for my Ram. i just wondered if replacing my steering damper would make it a little less jumpy over the bumps.