2024 jayco seneca xt 35l the all-new seneca xt is a unique addition to jayco's super class c lineup. built on the ford f550 or f600 4x4 chassis this all-terrain vehicle handles well on and off pavement thanks to the jride premium ride and handling package. integrated front and rear auxiliary lighting an upgraded front bumper and a 2 in. bds radius arm suspension lift give the seneca xt the rugged look you won't find elsewhere.