GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 Envoy XUV 🢒 Engine 🢒 Engine Cooling 🢒 Oil Pump Replacement

Removal Procedure
  1. Remove the engine front cover. Refer to Engine Front Cover Replacement .

    2. Object Number: 659575 Size: SH
  2. Remove the oil pump cover bolts.
  3. Remove the oil pump cover.
  4. Mark the inner and the outer gears in relation to the oil pump housing.
  5. Remove the inner and the outer oil pump gears.
  6. Remove the oil pump pressure relief valve plug.
  7. Remove the oil pump pressure relief valve and the spring.

Installation Procedure

    Object Number: 659575 Size: SH
  1. Install the oil pump pressure relief valve and the spring.

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the oil pump pressure relief valve plug.

    3. Tighten
    Tighten the oil pump pressure relief valve to 14 N·m (124 lb in).

  3. Install the oil pump outer and inner gears as removed.
  4. Install the oil pump cover.
  5. Install the oil pump cover bolts.

    6. Tighten
    Tighten the oil pump cover bolts to 10 N·m (89 lb in).

  6. Install the front cover. Refer to Engine Front Cover Replacement .