GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Oil Pump Assemble

    Object Number: 1402152 Size: SH

    Important: Prior to assembling the oil pump, coat all wear or internal surfaces with clean engine oil.

  1. Install the driven gear (412) into the pump housing (413).

    2. Install the driven gear with the orientation mark facing the pump cover.

  2. Install the drive gear (410) into the pump housing.
  3. Install the oil pump cover (409).

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the oil pump cover bolts (408).

    5. Tighten
    Tighten the oil pump cover bolts to 12 N·m (106 lb in).

  5. Install the relief valve (414).
  6. Install the relief valve spring (415).
  7. Install the relief valve plug (416).

    8. Tighten
    Tighten the relief valve plug to 12 N·m (106 lb in).

  8. Inspect the oil pump for smooth operation by rotating the drive gear.