help, i was doing doughnuts in my tahoe and now the steering is stiff

[NOPROBROBB]

Thank you to everyone for the posts and help, i finished putting everything back together this morning, it was definately the ps pump. It drives just like it did before now, definately a good learning experience as to this is the first time i ve worked on the tahoe other than replacing the battery. You guys are great and this forum has been alot of help to me, thanks