power steering pump going bad?

Discussion in 'General Chevy & GM Tech Questions' started by pipe539, May 17, 2011.

  1. pipe539

    pipe539 New Member

    hello all i have a 1991 GMC C3500 truck 5.7l 3+3 long box the truck is not pretty at all but i like it a lot. one of the things that bother me about it is the power steering pump. on start up the belt squeals just a little, also the breaks are powered off the power steering pump as well so for the first few miles the pump belt squeals if i steer or use the brakes. I have replaced the belt and tightened it. after the truck is warmed up quiet as a mouse unless i get on the brakes. Also there is plenty of fluid.
    So is the pump not keeping up with demand or is the bump going bad?
  2. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Sounds alot like your pump is weak..
  3. silveradotrailblazer

    silveradotrailblazer Epic Member 5+ Years ROTM Winner 5000 Posts

    Welcome to the club.
  4. pipe539

    pipe539 New Member


    weak pump eh I guess ill look for a replacement.
  5. stephan

    stephan Rockstar 4 Years 5000 Posts

    Hey Pipe, welcome to the truck club. Has the p. s. fluid ever been replaced? A '91 probably has a lot of miles on it. 150,000, 200,000 miles?
    Old crappy fluid can make it appear like the pump is going bad. You might try changing it before you spend the big bucks for a new pump.
  6. pipe539

    pipe539 New Member

    hi yea the truck has over 200k on it i'll change it before replacing it. thanks for the info
  7. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    I second the fluid replacement at least to try before the expense of a new pump! and wherebouts in MN???

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