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GMC Yukon XL 2000–2006

GMC Yukon XLModel years 2000–2006

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Common on this vehicle:LeakNoise

causeHydro-Boost Relief ValveRemove

Record by record

1 records state a cause or a remedy. Each record is shown as short labels in the order fault → finding the cause → correction. Press a label to narrow to the records that state it.

Symptom

Component named as the cause

A ribbon is as wide as the records that state both of its ends (only the commonest are drawn). A record that names several symptoms or components runs through each. Orange is records that say the fault came back or was not fixed. Results come from owners’ reports only; one that does not say is “result not stated”. None of this is a likelihood of a cause or a rate at which work succeeds.

Read the records one by one (1)

Known issuesHydro-boost brake assist and power steering share one hydraulic supply (four campaigns)1

  1. Owner complaint2004 GMC YUKON DENALI XL ・ 2012-04-30

    Fluid leaking from hydraulic brake booster and release valve, noise on startup

    1. 1Fault

    2. 2Finding the cause

    3. 3CorrectionNot repaired

      THE VEHICLE WAS NOT REPAIRED.

      What the documents say to do

      Hydro-boost brake assist and power steering share one hydraulic supply (four campaigns)

      Confirm

      • Perform the "Power Steering System Test" found in SI and make any necessary repairs based on system diagnosis.

      Repair

      1. Dealers replace the hydro-boost relief valve.
      2. Dealers test the hydro-boost assembly for functional operation and replace it if it fails.

      Caution

      • An inoperative pump raises steering and braking effort but does not completely remove the ability to steer or slow the vehicle.
    Read the sentences of the record
    Fault
    THE CONTACT STATED THAT FLUID WAS LEAKING FROM THE HYDRAULIC BRAKE BOOSTER AND THE RELEASE VALVE. (1 more)
    Remedy
    THE VEHICLE WAS NOT REPAIRED.
    Inspection
    THE CONTACT TOOK THE VEHICLE TO AN INDEPENDENT MECHANIC, WHO INSPECTED THE BRAKES AND INFORMED THE CONTACT THAT THE HYDRAULIC BRAKE BOOSTER AND THE RELEASE VALVE NEEDED TO BE REPLACED.