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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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2 conditions added

Common on this vehicle:Noise

Record by record

2 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.

Component named as the cause

Work done

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 (2)

ENGINE AND ENGINE COOLING2

  1. Manufacturer communication2006 GMC YUKON ・ 2019-09-16

    Low or No Oil Pressure and Engine Noise Service Information

    1. 1Fault

      • Customers may complain of low oil pressure, no oil pressure and/or engine noise, possibly with P0521, which may result from a sticking oil pump pressure relief valve.
      • It may be intermittent if the valve frees up when the engine cools down.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Repair

      1. If SI diagnosis isolates low mechanical oil pressure at the oil filter housing and oil pressure sensor, replace the oil pump and flush the oil cooler lines (if equipped).
      2. Clean the inside of the oil pan, change the oil and filter, and re-evaluate the concern.

      Caution

      • If an engine noise is noticed after replacing the oil pump, follow the SI diagnosis and repair the engine as necessary.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to the 2006 - 2014 GMC Yukon (note: the years run later than the years this service covers).
    • Applies to：These aluminum V8 engine RPOs are covered: L76, L77, L92, L94, L99, L9H, LC9, LH6, LH8, LH9, LMG, LS2, LS3, LS4, LS7, LS9, LSA, LZ1.
    • Condition：Customers may complain of low oil pressure, no oil pressure and/or engine noise, possibly with P0521, which may result from a sticking oil pump pressure relief valve.
    • Condition：It may be intermittent if the valve frees up when the engine cools down.
    • Repair：If SI diagnosis isolates low mechanical oil pressure at the oil filter housing and oil pressure sensor, replace the oil pump and flush the oil cooler lines (if equipped).
    • Repair：Clean the inside of the oil pan, change the oil and filter, and re-evaluate the concern.
    • Caution：If an engine noise is noticed after replacing the oil pump, follow the SI diagnosis and repair the engine as necessary.

    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 have low oil pressure, no oil pressure, and/or engine noise. Technician will need to replace the oil pump, flush the oil cooler lines.

  2. Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2016-10-20

    Low Oil Pressure Message and P0521 DTC

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

    Read the sentences of the record
    Remedy
    THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE LOW OIL PRESSURE MESSAGE. TECHNICIAN MAY ALSO FIND A DIAGNOSTIC TROUBLE CODE P0521 IN THE ENGINE CONTROL MODULE. TECHNICIAN SHOULD FOLLOW ALL PUBLISHED SERVICE INFORMATION DIAGNOSIS. WHEN USING A SCAN TOOL IF THE OIL PRESSURE IS LOW BUT THE OIL PRESSURE AT THE OIL FILTER HOUSING IS CORRECT, TECHNICIAN SHOULD INSPECT THE VALVE LIFTER OIL FILTER FOR DEBRIS/SLUDGE THAT COULD BE RESTRICTING OIL FLOW TO THE OIL PRESSURE SENSOR. TECHNICIAN SHOULD REMOVE THE VALVE LIFTER OIL FILTER AND CLEAN IT. IF THE VALVE LIFTER OIL FILTER CANNOT BE CLEANED REPLACE IT.