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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (2 Of 3)) >> Off-Vehicle Repair Instructions (Part 2) >> Oil Pump Installation

Oil Pump Installation

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  1. Install a new O-ring to the engine block.
    Fig 1: View Of Oil Pump, Bolts & O-Ring
    GM660533Courtesy of GENERAL MOTORS CORP.
  2. Lubricate the O-ring with engine oil.
  3. Install the oil pump.
    4. NOTE: Refer to FASTENER NOTICE .
  4. Install the oil pump bolts.

    Tighten:  Tighten the oil pump bolts to 21 N.m (15 lb ft).

    5. IMPORTANT: Do not damage the crankshaft sensor reluctor teeth.
    Fig 2: View Of Oil Pump Drive Gear
    GM660339Courtesy of GENERAL MOTORS CORP.
  5. Install the oil pump drive gear and crank sensor reluctor assembly.
  6. Install the oil pump driven gear.
    Fig 3: View Of Oil Pump Driven Gear
    GM660532Courtesy of GENERAL MOTORS CORP.
    7. NOTE: Do not use an impact driver to remove or install the oil pump driven gear nut. Use of an impact driver may shear the oil pump drive gear pin in the crankshaft.
    Fig 4: Removing/Installing Secondary Oil Pump Driven Gear Nut While Holding Oil Pump Shaft
    GM776631Courtesy of GENERAL MOTORS CORP.
  7. While holding the secondary oil pump shaft with a hex driver, install the oil pump driven gear nut.

    Tighten:  Tighten the oil pump driven gear nut to 100 N.m (74 lb ft).

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