GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2009 🢒 H3 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Oil Pan Replacement

Removal Procedure

    Object Number: 1909229 Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Remove the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement.
  3. Remove the front differential and secure to the frame. Refer to Differential Carrier Assembly Replacement.
  4. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement.
  5. Remove the transmission oil cooler lines (1) from the retainer (2).
  6. Remove the transmission oil cooler line retaining bracket bolt (3) and bracket (4).
  7. Remove the inner axle shaft. Refer to Front Drive Axle Inner Shaft and Inner Shaft Housing Replacement.
  8. Remove the starter. Refer to Starter Motor Replacement.
  9. Remove the flywheel inspection cover from the left side of the transmission.

    10. Object Number: 899616 Size: SH
  10. Remove the battery cable channel bolt from the front of the oil pan.
  11. Remove the battery cable channel from the oil pan.

    12. Object Number: 871561 Size: SH
  12. Loosen the 2 upper air conditioning (A/C) compressor bracket bolts (4).
  13. Remove the 2 lower A/C compressor bracket bolts (3).

    14. Position the A/C compressor aside and secure.


    Object Number: 899342 Size: SH
  14. Remove the 2 lower bellhousing bolts (1).

    15. Object Number: 1909302 Size: SH
  15. Remove the oil pan bolts (1).
  16. Remove the oil pan by tilting the rear of the oil pan down to clear the transmission, pull the oil pan rearward past the front wire harness, then lower the oil pan clear of the vehicle.

    17. Note: 

       • The oil pan gasket is reusable. It is NOT necessary to remove the oil pan gasket unless damaged.
       • DO NOT allow foreign material to enter the oil passages of the oil pan, cap or cover the openings as required.


    Object Number: 384699 Size: SH
  17. Drill out the oil pan gasket retaining rivets (2), if required.
  18. Remove the gasket (1) from the pan.
  19. Discard the gasket and rivets.
  20. Clean and inspect the oil pan. Refer to Automatic Transmission Flex Plate Cleaning and Inspection.

Installation Procedure

Note: 

   • The alignment of the structural oil pan is critical. The rear bolt hole locations of the oil pan provide mounting points for the transmission bellhousing. To ensure the rigidity of the powertrain and correct transmission alignment, it is important that the rear of the block and the rear of the oil pan must NEVER protrude beyond the engine block and transmission bellhousing plane.
   • If replacing the oil pan gasket it is not necessary to rivet the NEW gasket to the oil pan.


    Object Number: 451897 Size: SH
  1. Apply a 5 mm (0.2 in) bead of sealant 20 mm (0.8 in) long to the engine block. Refer to Adhesives, Fluids, Lubricants, and Sealers for the correct part number. Apply the sealant directly onto the tabs of the front cover gasket that protrudes into the oil pan surface.

    2. Object Number: 451898 Size: SH
  2. Apply a 5 mm (0.2 in) bead of sealant 20 mm (0.8 in) long to the engine block. Refer to Adhesives, Fluids, Lubricants, and Sealers for the correct part number. Apply the sealant directly onto the tabs of the rear cover gasket that protrudes into the oil pan surface.

    3. Object Number: 1909302 Size: SH
  3. Pre-assemble the oil pan gasket and bolts (1) to the pan.
    4. • Install the gasket onto the pan.
    • Install the oil pan bolts to the pan and through the gasket.
  4. Install the oil pan, oil pan gasket, and bolts to the engine block as an assembly.
  5. Hand thread the oil pan bolts into the engine block until snug. Do not tighten at this time.

    6. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 899342 Size: SH
  6. Install the 2 lower bellhousing bolts (1).

    7. Tighten

    1. Tighten the lower bellhousing bolts to 50 N·m (37 lb ft).
    2. Tighten the 2 rear oil pan to rear cover bolts to 12 N·m (106 lb in).
    3. Tighten the remaining oil pan bolts to 25 N·m (18 lb ft).

    Object Number: 871561 Size: SH
  7. Install the 2 lower A/C compressor bracket bolts (3).

    8. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  8. Tighten the 2 upper A/C compressor bracket bolts (4).

    9. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 899616 Size: SH
  9. Install the battery cable channel to the oil pan.
  10. Install the battery cable channel bolt to the oil pan.

    11. Tighten
    Tighten the bolt to 12 N·m (106 lb in).

  11. Install the flywheel inspection cover to the left side of the transmission.

    12. Object Number: 1909229 Size: SH
  12. Install the starter. Refer to Starter Motor Replacement.
  13. Install the inner axle shaft. Refer to Front Drive Axle Inner Shaft and Inner Shaft Housing Replacement.
  14. Install the transmission oil cooler line retaining bracket (4) and bolt (3).

    15. Tighten
    Tighten the bolt to 9 N·m (80 lb in).

  15. Install the transmission oil cooler lines (1) to the retainer (2).
  16. Install the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement.
  17. Fill the engine with oil. Refer to Engine Oil and Oil Filter Replacement.
  18. Install the front differential. Refer to Differential Carrier Assembly Replacement.
  19. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.