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Home >> GMC >> 2005 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 4.8L, 5.3L & 6.0L (Repair Instructions - 2 Of 3) >> Off-Vehicle Repair Instructions - Part 2 >> Oil Pump Disassemble

Oil Pump Disassemble

    Fig 1: Exploded View Of Oil Pump
    GM1402152Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The internal parts of the oil pump assembly are not serviced separately, excluding the spring. If the oil pump components are worn or damaged, replace the oil pump as an assembly.
  1. Remove the oil pump cover bolts (408).
  2. Remove the oil pump cover (409).
    3. IMPORTANT: Mark or identify the gears for assembly. Refer to Separating Parts .
  3. Remove the drive gear (410).
  4. Remove the driven gear (412).
  5. Remove the pressure relief valve plug (416).
  6. Remove the pressure relief valve spring (415).
  7. Remove the pressure relief valve (414).
  8. Inspect the oil pump components. Refer to Oil Pump Cleaning and Inspection .
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