91 blazer wanting to pull to the right

Hi, new here first post! I have a 91 blazer that after being driven for a couple of months it seems like if you are driving real slow it is going over a speed bump then when it comes down the steering wheel jerks to the right. it does it at all speeds. it doesnt do it after it has sat for awhile what could this be?

I would check the front axel joints.
And look over for lose or broken front end parts.

I have taken the right side tire off twice and yanked on all the parts to see if there is any play in them, not a single part moves. balljoints, tie rods nothing moves. What would i look for on the front axle. I had the driver side axle break and it didnt do that i just tied it out the way until i fixed. but this is totally weird. like i said ive check parts and checked parts nothing wiggles. would the control arm have an effect like that? I would think that controls it up and down. not left and right, but i dont know... Thanks for the reply!

Switch the front tires side to side,The left front to the right front and the right front to the left.It maybe a bad tire.