GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 XLR 🢒 Engine 🢒 Engine Mechanical - 4.4L 🢒 Oil Pan Replacement

Removal Procedure
  1. Remove the front suspension crossmember. Refer to Front Suspension Crossmember Replacement.
  2. Drain the engine oil.
  3. Remove the engine oil filter and allow to drain.
  4. Remove the automatic transmission fluid cooler line mounting clips. Refer to Transmission Fluid Cooler Lower Pipe Assembly Replacement - Transmission to Auxiliary Cooler.

    5. Object Number: 1760063 Size: SH
  5. Disconnect the engine oil level sensor electrical connector (1).
  6. Remove the oil level sensor (2). Refer to Engine Oil Level Sensor and/or Switch Replacement.

    7. Object Number: 928632 Size: SH
  7. Remove the oil pan bolts.
  8. Remove the oil pan.
  9. Drill out the oil pan gasket rivets.

    10. Object Number: 1254510 Size: SH
  10. Remove and discard the oil pan gasket.
  11. Clean and inspect the oil pan. Refer to Oil Pan Cleaning and Inspection.

Installation Procedure

Note: All gasket surfaces should be free of oil or other foreign material during assembly.

The alignment of the structural oil pan is critical. The rear bolt hole locations of the oil pan provide mounting points for the flywheel housing cover. To ensure the rigidity of the powertrain it is important that the rear of the block and the rear of the oil pan are flush or even. The rear of the oil pan must NEVER protrude beyond the engine block.


    Object Number: 1254510 Size: SH
  1. Use a new oil pan gasket. It is not necessary to rivet the new oil pan gasket to the oil pan.
  2. Position the oil pan to the lower crankcase.

    3. Object Number: 1254548 Size: SH
  3. The oil pan must be held flush to 0.50 mm (0.020 in) forward of the rear face of the engine block (1).

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


    Object Number: 928633 Size: SH
  4. Install the oil pan bolts in the sequence shown.
    5. • First Pass--Tighten the oil pan bolts to 15 N·m (11 lb ft).
    • Final Pass--Tighten the oil pan bolts to 25 N·m (18 lb ft).
  5. Install the oil drain plug and tighten to 25 N·m (18 lb ft)

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


    Object Number: 1760063 Size: SH
  6. Install the engine oil level sensor into the oil pan and tighten to 20 N·m (15 lb ft).
  7. Connect the electrical connector to the engine oil level sensor.
  8. Install the automatic transmission fluid cooler line mounting clips. Refer to Transmission Fluid Cooler Lower Pipe Assembly Replacement - Transmission to Auxiliary Cooler.
  9. Install a NEW engine oil filter and tighten to 30 N·m (22 lb ft).
  10. Install the front suspension crossmember to the vehicle. Refer to Front Suspension Crossmember Replacement.
  11. Fill the crankcase with the proper quantity and grade of engine oil. Refer to Approximate Fluid Capacities and Fluid and Lubricant Recommendations.
  12. Run the engine and check for leaks.