Suggestions on PS squealing (hydroboost)

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ZZ4x4, Aug 14, 2003.

  1. ZZ4x4

    ZZ4x4 1/2 ton status

    Oct 17, 2001
    Likes Received:
    Garland, TX
    My PS belt squeals like crazy on my hydroboost system. When it sqeals, I feel it in the brake pedal and steering wheel as expected due to the loss of pump pressure. I've tightened then replaced the belt. It is TIGHT but still seems to slip. Maybe the pump is locking up?? Is there a way to prolong it's life? Additives? Would air in the system do this?
    Thx, JT

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