When I pulled into my parking lot yesterday and it felt like the truck kind of slid when I turned. I didn't think much of it. I thought I just hit some oil or something. When I went to leave this morning I noticed that I have no steering at all. The steering wheel just spins all the way around in both directions without the wheels moving at all. I'm thinking I need to replace the steering gear box but I wanted to get other opinions to see if there is something else I should do first.