Steering rack bushing check?

I have an 06 access cab prerunner sport. 3" lift running 33''s. When I hit a bump I feel a lose double bump in the steering weel. I have had the dealer look at it, they could't find or duplicate it. But I still feel it. Reading more threads I have found some people with the same prob as me. A lot of them are talking about steering rack bushings. How do I check/change the bushings and can I do it my self? Could my lift have caused the bushings to go bad? If you have insight, hook me up please!

 

Come on people! I can't just crawl under my truck and look for myself cause im deployed right now. My truck is 10,000 miles away in a storage unit. I just want to know what to look for when I get back.

 

I didn't know the 2nd gen trucks had these problems....but I replaced my steering rack bushings on my 96.

If you jack up the front end and simply grab a wheel and shake it side to side (front / back - hard to explain). If your rack bushings are shot - you'll have some 'play'and you can actually peek your head underneath the truck and watch the entire rack move.

 

There's that, but also check tie rod ends, ball joints, stabilizer links and steering column. My (1st gen) problem ended up being the steering column itself. It was loose where it has the collapsable hexagonal section was.

 

Well I had the dealership look at everything suspention wise. They said they couldn't find or duplicate the prob. But after talking with people, I think it is maybee something in my sterring collom. Thanks for the input.