Question about 2002 GMC Sierra 2500HD

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2002 GMC 2500HD Duramax No power brakes or power steering

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  • Anonymous Dec 30, 2008

    Having the same problem, I've been told the the power steering pump runs both.

  • badahughes Feb 05, 2009

    iI HAVE A 2002 CHEVY 2500 DH DURA MAX DESIEL THAT SOMETIMES HAS NO POWER STEERING OR BRAKES WHEN YOU START IT . WHEN FIRST STARTED OVER NITE. AFTER YOU LET IT RUN FOR AWHILE IT STARTS WORKING AGAIN. THIS HAS HAPPENED AT LEAST TWO TIMES IN A MONTH. HAS ANYONE ELSE HAD THIS PROBLEM AND WHAT DID YOU DO? IT HAD A BRAND NEW STEERING PUMP INSTALLED AND IT DID NOT SOLVE THE PROBLEM.

    E MAIL franhughes2003@verizon.net

  • creverhart Apr 27, 2009

    Same problems and suggestions yet.

  • Glenn Snow May 11, 2010

    Have you checked all fluid level, ie. oil, trans, brake, and power steering?

  • Anonymous Mar 26, 2014

    How do you bleed the power steering brake booster

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  • Master
  • 414 Answers

TEST the vacuum pump. Both systems are run by it. Pressure should be at least 10psi right out of pump at 1000 rpm.
P.S. If pressure varies more than about 4 psi as the rpm vary the pump is failling.

Posted on Jun 23, 2009

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Posted on Jan 02, 2017

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