LB7: New be please help

[Cwduramax]

I have a 01 GMC Sierra 2500hd lb7 250,000 miles power steering pulley replaced 3 times and 2 pumps now the pulley is starting to wobble again and if you watch the belt between the harmonic balancer and the first idler belt is shaking bad trying to fix any ideas would be great full also replaced hydro boost with GM parts at idle steering gets hard and brakes feel hard

 

[DAVe3283]

What brand power steering pump did you put on? It sounds like the pump is going out again. I recommend sticking with OEM (ACDelco), they seem to last pretty well.

With the miles on the truck, if you haven't replaced the idler pulleys, now would be the time.

Is just the belt shaking, or is the balancer also moving around? Take the belt off and try and wobble the balancer by hand. It shouldn't move. Fire it up without the belt, and make sure it is rotating perfectly true, no wobble.