2003 Dodge Ram rackinpinion

Hi, Was The Caster, And Camber In Spec. When Alignment Was Done? Does It Pull When applying The Brakes? If It Does, It May need A brake caliper, And brake hose. Also Try Swapping The front Tires Side To Side. If After Doing that, And Pull Is To the Left Instead Of the right, Then It's A Radial Tire Pull. I've Seen New Tires cause this. If All This Is Good Then You may Have A Ball Joint Causing A binding Condition. By Removing The Nut And cotter pin From The Out Tie rod end. And turning The spindle To See That it's Not Tight Or binding.

Hope This helps You,
Good luck
Edward S.