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  1. #1

    Default power steering pump going bad?

    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?
    thanks
    I'm addicted to trucks, and i like it.

  2. #2
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    murdog94's Avatar
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    Sounds alot like your pump is weak..
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  3. #3

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    Welcome to the club.

  4. #4

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    Quote Originally Posted by silveradotrailblazer View Post
    Welcome to the club.
    thanks

    weak pump eh I guess ill look for a replacement.
    thanks

  5. #5
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    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.
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  6. #6

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

  7. #7
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    murdog94's Avatar
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    I second the fluid replacement at least to try before the expense of a new pump! and wherebouts in MN???

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