You need to get someone in the truck to very lightly wiggle the wheel while you watch the shaft as it goes into the steering box. It might be the double D part of the column. That's what happened to me. I had to get the steering box replaced and they just slide it out of the double d part of the shaft, and they lost the bushing and spring inside, and I had a lot of slop. I was away from home at the time, and when I found out what happened, I took a short piece of brakeline I had laying in the truck, flattened one end with a hammer, and drove it up in the double d part to take the slop out. I wrapped electrical tape around it for good measure so it would not fall out. Fixed it right up and sorry to say, it's still like that several years later.