Blaze148 - I would be a little skeptical about "hard to steer" on a Chevy chassis. We do not have a Class B Chevy, but a Class C chassis. It steers like an automobile (easy). There could be some mechanical problems like worn or never lubed ball joints, tie-rod ends, or a loose fan belt on the power steering pump.
Just a wild guess, the front tires likely should be aired up to about 55 to 60 lbs. There should be a sticker on the door pillar to narrow it down a little more.
A simple trip to a Chevy medium duty truck dealer should clear up if anything is wrong in the steering mechanics.
2002 Trail-Lite Model 211-S w/5.7 Chevy (click View Profile)
Gene