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Oil Pan Replacement Buick Century VI

Mechanical 10 illustrations ~806 words

Tools Required

J 39505 Torque Wrench Adapter. See Special Tools and Equipment .

Scheme 139

Scheme 139: Removal Procedure
Scheme 139: Removal Procedure

Scheme 140

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Scheme 140

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Scheme 141

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Scheme 142
  1. Disconnect the negative battery cable. Refer to «BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE»(ref-189351-S28867261612005090900000) Battery.
  2. Remove the left and the right engine mount struts. Refer to «ENGINE MOUNT STRUT REPLACEMENT»(ref-189348-S06253505732005090900000) .
  3. Remove the drive belt. Refer to «DRIVE BELT REPLACEMENT»(ref-189348-S04700214262005090900000) .
  4. Install the engine support fixture. Refer to «ENGINE SUPPORT FIXTURE»(ref-189348-S37301710422005090900000) .
  5. Raise and support the vehicle. Refer to «LIFTING AND JACKING THE VEHICLE»(ref-189331-S23727654502005090900000) in General Information.
  6. Remove the A/C compressor mounting bolts, reposition and secure the A/C compressor. Refer to «COMPRESSOR REPLACEMENT (3.1L)»(ref-189338-S07603647622005090900000) in Heating, Ventilation and Air Conditioning.
  7. Remove the 3-way catalytic converter pipe from the right exhaust manifold. Refer to CATALYTIC CONVERTER REPLACEMENT (3.1L) in Engine Exhaust.
  8. Drain the engine oil. Refer to «ENGINE OIL AND OIL FILTER REPLACEMENT»(ref-189348-S31856086792005090900000) .
  9. Disconnect the oil level sensor electrical connector.
  10. Remove the starter motor. Refer to «STARTER»(ref-168300-S01724148472004110400000) in Starters.
  11. Remove the transaxle brace from the oil pan. Refer to «TRANSAXLE BRACE»(ref-153698-S35442514422003042500000) in Removal & Installation -A/T.
  12. Loosen the transaxle mount lower nuts. Refer to «TRANSAXLE MOUNT»(ref-151564-S39797461152002123100000) in Servicing - A/T.
  13. Remove the engine mount lower nuts. Refer to «ENGINE MOUNT REPLACEMENT»(ref-189348-S09615847022005090900000) .
  14. Lower the vehicle.
  15. Use the engine support fixture to raise the engine.
  16. Raise the vehicle.
  17. Remove the steering shaft intermediate pinch bolt. Refer to «INTERMEDIATE STEERING SHAFT REPLACEMENT»(ref-189342-S17666274502005090900000) in Steering Wheel and Column.
  18. Remove the engine mount bracket with the engine mount from the oil pan. Refer to «ENGINE MOUNT BRACKET REPLACEMENT»(ref-189348-S01921036962005090900000) .
  19. Remove the right lower ball joint from the steering knuckle. Refer to LOWER BALL JOINT REPLACEMENT in Front Suspension.
  20. Remove the right outer tie rod from the steering knuckle. Refer to TIE ROD END REPLACEMENT - OUTER in Power Steering System.
  21. Install jackstands to the frame assembly.
  22. Remove the right side frame bolts.
  23. Loosen the left side frame bolts.
  24. Using the jackstands lower the right side of the frame.
  25. Use the J 39505 in order to remove the right oil pan side bolts.
  26. Remove the left oil pan side bolts.
  27. Remove the oil pan bolts.
  28. Remove the oil pan.
  29. Remove the oil pan gasket.
  30. Clean the oil pan and the engine block gasket mating surface.

Scheme 143

Scheme 143: Installation Procedure
Scheme 143: Installation Procedure

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Scheme 144

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Scheme 145

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Scheme 146

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Scheme 147
  1. Apply sealant GM P/N 1052942 (Canadian P/N 10953466) at the rear main bearing cap and the engine block (1).
  2. Install the oil pan gasket.
  3. Install the oil pan. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
  4. Install the oil pan bolts. Tighten Tighten the bolts to 25 N.m (18 lb ft).
  5. Install the left oil pan side bolts. Tighten Tighten the bolts to 50 N.m (37 lb ft).
  6. Use the J 39505 in order to install the right oil pan side bolts. Tighten Tighten the bolts to 50 N.m (37 lb ft).
  7. Use the jackstands to raise the frame to the original position
  8. Install the right side frame bolts and tighten the left side frame bolts.
  9. Remove the jackstands from the frame assembly.
  10. Install the right lower ball joint to the steering knuckle. Refer to LOWER BALL JOINT REPLACEMENT in Front Suspension.
  11. Install the right outer tie rod to the steering knuckle. Refer to TIE ROD END REPLACEMENT - OUTER in Power Steering System.
  12. Install the engine mount bracket with the engine mount to the oil pan. Refer to «ENGINE MOUNT BRACKET REPLACEMENT»(ref-189348-S01921036962005090900000) .
  13. Install the steering shaft intermediate pinch bolt. Refer to INTERMEDIATE STEERING SHAFT REPLACEMENT in Steering Wheel and Column.
  14. Lower the vehicle.
  15. Use the engine support fixture to lower the engine.
  16. Raise and the vehicle.
  17. Install the transaxle mount lower nuts. Refer to «TRANSAXLE MOUNT»(ref-151564-S39797461152002123100000) in Servicing - A/T.
  18. Install the engine mount lower nuts. Refer to «ENGINE MOUNT REPLACEMENT»(ref-189348-S09615847022005090900000) .
  19. Install the transaxle brace to the oil pan. Refer to «TRANSAXLE BRACE»(ref-153698-S35442514422003042500000) in Removal & Installation -A/T. .
  20. Install the starter motor. Refer to «STARTER»(ref-168300-S01724148472004110400000) in Starters.
  21. Connect the oil level sensor electrical connector.
  22. Install the 3-way catalytic converter pipe to the right exhaust manifold. Refer to CATALYTIC CONVERTER REPLACEMENT (3.1L) in Engine Exhaust.
  23. Install the A/C compressor. Refer to «COMPRESSOR REPLACEMENT (3.1L)»(ref-189338-S07603647622005090900000) in Heating, Ventilation and Air Conditioning.
  24. Lower the vehicle.
  25. Remove the engine support fixture.
  26. Install the left and the right engine mount struts. Refer to «ENGINE MOUNT STRUT REPLACEMENT»(ref-189348-S06253505732005090900000) .
  27. Install the drive belt. Refer to «DRIVE BELT REPLACEMENT»(ref-189348-S04700214262005090900000) .
  28. Fill the engine with new engine oil. Refer to «ENGINE OIL AND OIL FILTER REPLACEMENT»(ref-189348-S31856086792005090900000) .
  29. Connect the negative battery cable. Refer to «BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE»(ref-189351-S28867261612005090900000) Battery.
  30. Inspect for leaks.

Scheme 148

Scheme 148: Removal Procedure
Scheme 148: Removal Procedure
  1. Disconnect the negative battery cable. Refer to «BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE»(ref-189351-S28867261612005090900000) Battery.
  2. Raise and support the vehicle. Refer to «LIFTING AND JACKING THE VEHICLE»(ref-189331-S23727654502005090900000) in General Information.
  3. Disconnect the engine oil pressure sensor electrical connector.
  4. Remove the engine oil pressure sensor.

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