I have an 06 F250 Super Crew, 6.0. It's lifted 8" with 37" tires. I had some play in the steering so I replaced one of the arms in the front end;forgot the name of it but it was about $200. Lo and Behold the problem was still there. I crawled under the truck while someone moved the steering wheel and found that the play was in the sterring box. I was told by the local Ford dealer, "sorry, it's lifted, we won't warranty it".
I've been down that road before with the whole modified/warranty thing. I F'n hate it.
I believe that I have 2 problems and I want to see if anyone else has seen similar with similar trucks.
Many times when I try to turn the steering wheel while the truck is NOT in motion, it just won't turn. I know that's bad to do but it should still turn. Is that a power steering issue or the big tires? I rather doubt it's the lift or the tires considering I have had 4 other lifted trucks and never had that problem.
I also think that the possible power steering issue may have caused the play in the steering (about1-2 inches at the steering wheel.)
I actually had one "brilliant" service tech at Ford tell me, "there is no excessive play found" when I took it in for service. What a moron!
If any techs or anybody else has some info, I'd appreciate it.