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GMC Yukon XL 2000–2006

GMC Yukon XLModel years 2000–2006

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Common on this vehicle:Noise

issuePower steering pump whine between idle and 2000 rpmRemove

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Known issuesPower steering pump whine between idle and 2000 rpm1

  1. Manufacturer communication2003–2006 GMC YUKON XL ・ 2017-08-15

    Power Steering Pump Whine Noise

    1. 1Fault

      • Owners may report a whine noise that normal diagnostics trace to the power steering pump, most commonly heard between idle and 2000 rpm.
    2. 2Finding the cause

      Possible causes

      • A new design power steering pump that helps improve or eliminate this noise was introduced with the new body style pickups and utilities from model year 2007 and the 2008 H2.
    3. 3Correction

      Repair

      1. GM dealers report that flushing and refilling the power steering system with Lucas Power Steering Fluid with Conditioners has reduced or eliminated the noise; GM Engineering has not evaluated this product.
      2. For vehicles built before that change, or if the Lucas fluid is not readily available, install the latest design GM power steering pump, looking up the part number in the GM Electronic Parts Catalog (EPC).
      3. The warranty labor operation is E9523, Flush and Bleed Power Steering System, 0.9 hour.

      Parts

      • The fluid is Lucas PN 10442, a synthetic base fluid sold in pint containers at most auto parts stores; most applications need 6 to 8 pints to flush and fill the system.
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    From the manufacturer’s document

    • Applies to:The model list covers 2003-2013 Cadillac Escalade, Chevrolet Avalanche, Silverado, Suburban, Tahoe and GMC Sierra and Yukon models, plus the 2003-2009 Hummer H2 (note: the Yukon range runs to 2013).
    • Condition:Owners may report a whine noise that normal diagnostics trace to the power steering pump, most commonly heard between idle and 2000 rpm.
    • Repair:GM dealers report that flushing and refilling the power steering system with Lucas Power Steering Fluid with Conditioners has reduced or eliminated the noise; GM Engineering has not evaluated this product.
    • Parts:The fluid is Lucas PN 10442, a synthetic base fluid sold in pint containers at most auto parts stores; most applications need 6 to 8 pints to flush and fill the system.
    • Cause:A new design power steering pump that helps improve or eliminate this noise was introduced with the new body style pickups and utilities from model year 2007 and the 2008 H2.
    • Repair:For vehicles built before that change, or if the Lucas fluid is not readily available, install the latest design GM power steering pump, looking up the part number in the GM Electronic Parts Catalog (EPC).
    • Repair:The warranty labor operation is E9523, Flush and Bleed Power Steering System, 0.9 hour.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communication provides information to the technician about vehicles that may have a power steering pump whine noise. Technician will need to flush and refill the power steering system with Lucas Power Steering Fluid with Conditioners. Technician will replace the power steering pump with the latest design if the fluid is not available.