blazer will stop moving when i turn the wheel too sharp. i thought i had stalled it pulling into my parking place but its running fine. think it might be the power steering pump but can't say for sure. has this happened to anyone on here? i could really use some feedback with ideas. 99 s-10 blazer 4x4

 

Sounds like your 4wd is locked in and binding up. Does it do this on loose gravel as well as on pavement?

 

I would start with the 1/2 shafts to the front wheels.