GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2006 🢒 CTS 🢒 Engine 🢒 Engine Mechanical - 6.0L 🢒 Oil Pan Replacement

Removal Procedure

    Object Number: 1409886 Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Install the engine support fixture (1-5). Refer to Engine Support Fixture .
  3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  5. Re-install the engine oil drain plug until snug.

    6. Object Number: 178477 Size: SH
  6. Remove the left closeout cover and bolt.

    7. Object Number: 309713 Size: SH
  7. Remove the starter motor. Refer to Starter Motor Replacement .
  8. Remove the right transmission closeout cover and bolt.
  9. Remove and drain the engine oil filter.
  10. Re-install the engine oil filter until snug.
  11. Remove the bottom two transmission housing-to-oil pan bolts.

    12. Object Number: 651886 Size: SH
  12. Disconnect the engine oil temperature sensor (3) electrical connector.

    13. Object Number: 822362 Size: SH
  13. Remove the front frame assembly (1). Refer to Front Frame Replacement .
  14. Remove the power steering and air conditioning line retainers from the front of the oil pan and position aside.
  15. Reposition the power steering rack in order to gain access to the oil pan bolts and to provide clearance while removing the oil pan.

    16. Object Number: 178467 Size: SH
  16. Remove the oil level sensor from the oil pan. Refer to Engine Oil Level Sensor and/or Switch Replacement .

    17. Object Number: 1199309 Size: SH
  17. Remove the oil pan bolts.
  18. Remove the oil pan and gasket. Refer to Oil Pan Removal .
  19. Clean and inspect the oil pan. Refer to Oil Pan Cleaning and Inspection .

Installation Procedure

    Object Number: 1199309 Size: SH

    Important: 

       • The alignment of the structural oil pan is critical. The rear bolt hole locations of the oil pan provide mounting points for the transmission housing. 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 are flush or even. The rear of the oil pan must NEVER protrude beyond the engine block and transmission housing plane.
       • DO NOT use the oil pan gasket again.
       • It is not necessary to rivet the NEW gasket to the oil pan.

  1. Install the oil pan and gasket. Refer to Oil Pan Installation .

    2. Object Number: 178467 Size: SH
  2. Install the oil level sensor . Refer to Engine Oil Level Sensor and/or Switch Replacement .
  3. Install the power steering and air conditioning line retainers to the front of the oil pan.

    4. Object Number: 822362 Size: SH
  4. Install the front frame assembly (1). Refer to Front Frame Replacement .

    5. Object Number: 651886 Size: SH
  5. Connect the engine oil temperature sensor (3) electrical connector.

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

  6. Install the transmission housing-to-oil pan bolts.

    7. Tighten
    Tighten the clutch housing bolts to 50 N·m (37 lb ft).


    Object Number: 309713 Size: SH
  7. Install a NEW engine oil filter.
  8. Tighten the oil drain plug. Refer to Engine Oil and Oil Filter Replacement .
  9. Install the right transmission closeout cover and bolt.

    10. Tighten
    Tighten the transmission closeout cover bolt to 12 N·m (106 lb in).

  10. Install the starter motor. Refer to Starter Motor Replacement .

    11. Object Number: 178477 Size: SH
  11. Install the left transmission closeout cover and bolt.

    12. Tighten
    Tighten the transmission closeout cover bolt to 12 N·m (106 lb in).


    Object Number: 1409886 Size: SH
  12. Lower the vehicle.
  13. Remove the engine support fixture (1-5). Refer to Engine Support Fixture .
  14. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  15. Add engine oil as necessary. Refer to Approximate Fluid Capacities .
  16. Check for oil leaks.