GM Service Manual Online
For 1990-2009 cars only

Oil Pan Replacement AT 6T45

Removal Procedure

  1. Raise vehicle by its full height. Refer to Lifting and Jacking the Vehicle.
  2. Remove the front compartment insulator. Refer to Front Compartment Insulator Replacement.
  3. Remove drivetrain and front suspension frame replacement. Refer to LINK.
  4. Remove the generator and air conditioning compressor and power steering pump belt. Refer to Generator and Air Conditioning Compressor and Power Steering Pump Belt Replacement.

  5. Object Number: 2028247  Size: SH
  6. Remove the charge air cooler inlet air tube bolt (4).
  7. Remove the 2 hose clamps (3).
  8. Remove the 3 air charge air cooler inlet air tube bolts (1).
  9. Remove the charge air cooler inlet air tube (2).

  10. Object Number: 2028286  Size: SH

    Note: Do not remove the bolts.

  11. Loosen the 2 air conditioning compressor upper bolts (1).
  12. Remove the 2 air conditioning compressor lower bolts (5)
  13. Note: Pull carefully do not damage the air conditioning compressor.

  14. Pull the solved air conditioning compressor (2) forward.
  15. Remove the 2 air conditioning compressor bracket bolts (4).
  16. Remove the air conditioning compressor bracket (3).

  17. Object Number: 2028288  Size: SH
  18. Remove the 3 oil pan to transmission bolts (1).

  19. Object Number: 2027630  Size: SH

    Note: Mark the positions of the oil pan bolts, because of different length.

  20. Remove the 13 oil pan bolts (3).
  21. Remove the 2 oil pan bolts (2)
  22. Note: 

       • Use a suitable tool.
       • Be carefully do not damage the oil pan and oil pan sealing surface. Refer to Separating Parts.

  23. Remove the oil pan.

Installation Procedure


    Object Number: 2028291  Size: SH

    Note: 

       • Ensure that the oil pan sealing surface is clear of oil, grease and old gasket material.
       • Do not coat sealant on the oil pan bolt holes, it could damage the oil pan bolt threads or the engine block.

  1. Coat sealant on the oil pan sealing surface (1).

  2. Object Number: 2027630  Size: SH
  3. Install the oil pan (1).
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the 2 oil pan bolts (2) and tighten to  11 N·m (98 lb in).
  6. Install the 13 oil pan bolts (3) and tighten in evenly sequence to  11 N·m (98 lb in).

  7. Object Number: 2028288  Size: SH
  8. Install the 3 oil pan to transmission bolts (1) and tighten to  50 N·m (37 lb ft).

  9. Object Number: 2028286  Size: SH

    Note: Pull carefully do not damage the air conditioning compressor.

  10. Pull the solved air conditioning compressor (2) forward.
  11. Install the air conditioning compressor bracket (3).
  12. Install the 2 air conditioning compressor bracket bolts (4)  22 N·m (17 lb ft).
  13. Remove the 2 air conditioning compressor lower bolts (5)  22 N·m (17 lb ft).
  14. Tighten the 2 air conditioning compressor upper bolts (1) to  22 N·m (17 lb ft).

  15. Object Number: 2028247  Size: SH
  16. Install the charge air cooler inlet air tube (2).
  17. Install the 3 charge air cooler inlet air tube bolts (1) and tighten to  10 N·m (89 lb in).
  18. Install the 2 hose clamps (3).
  19. Install the charge air cooler inlet air tube bolt (4) and tighten to  10 N·m (89 lb in).
  20. Install the generator and air conditioning compressor and power steering pump belt. Refer to Generator and Air Conditioning Compressor and Power Steering Pump Belt Replacement.
  21. Install drivetrain and front suspension frame replacement. Refer to LINK.
  22. Install the front compartment insulator. Refer to Front Compartment Insulator Replacement.
  23. Lower vehicle full height.

Oil Pan Replacement MT D33

Removal Procedure

  1. Raise vehicle by its full height. Refer to Lifting and Jacking the Vehicle.
  2. Remove the front compartment insulator. Refer to Front Compartment Insulator Replacement.
  3. Remove drivetrain and front suspension frame. Refer to Drivetrain and Front Suspension Frame Replacement.
  4. Remove the generator and air conditioning compressor and power steering pump belt. Refer to Generator and Air Conditioning Compressor and Power Steering Pump Belt Replacement.

  5. Object Number: 2028247  Size: SH
  6. Remove the charge air cooler inlet air tube bolt (4).
  7. Remove the 2 hose clamps (3).
  8. Remove the 3 air charge air cooler inlet air tube bolts (1).
  9. Remove the charge air cooler inlet air tube (2).

  10. Object Number: 2028286  Size: SH

    Note: Do not remove the bolts.

  11. Loosen the 2 air conditioning compressor upper bolts (1).
  12. Remove the 2 air conditioning compressor lower bolts (5).
  13. Note: Pull carefully do not damage the air conditioning compressor.

  14. Pull the solved air conditioning compressor (2) forward.
  15. Remove the 2 air conditioning compressor bracket bolts (4).
  16. Remove the air conditioning compressor bracket (3).

  17. Object Number: 2028296  Size: SH
  18. Remove the 4 oil pan to transmission bolts (1).

  19. Object Number: 2027630  Size: SH

    Note: Mark the positions of the oil pan bolts, because of different length.

  20. Remove the 13 oil pan bolts (3).
  21. Remove the 2 oil pan bolts (2)
  22. Note: 

       • Use a suitable tool.
       • Be carefully do not damage the oil pan and oil pan sealing surface. Refer to Separating Parts.

  23. Remove the oil pan.

Installation Procedure


    Object Number: 2028291  Size: SH

    Note: 

       • Ensure that the oil pan sealing surface is clear of oil, grease and old gasket material.
       • Do not coat sealant on the oil pan bolt holes, it could damage the oil pan bolt threads or the engine block.

  1. Coat sealant on the oil pan sealing surface (1).

  2. Object Number: 2027630  Size: SH
  3. Install the oil pan (1).
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the 2 oil pan bolts (2) and tighten to  11 N·m (98 lb in).
  6. Install the 13 oil pan bolts (3) and tighten in evenly sequence to  11 N·m (98 lb in).

  7. Object Number: 2028296  Size: SH
  8. Install the 4 oil pan to transmission bolts (1) and tighten to  50 N·m (37 lb ft).

  9. Object Number: 2028286  Size: SH

    Note: Pull carefully do not damage the air conditioning compressor.

  10. Pull the solved air conditioning compressor (2) forward.
  11. Install the air conditioning compressor bracket (3).
  12. Install the 2 air conditioning compressor bracket bolts (4)  22 N·m (17 lb ft).
  13. Remove the 2 air conditioning compressor lower bolts (5)  22 N·m (17 lb ft).
  14. Tighten the 2 air conditioning compressor upper bolts (1) to  22 N·m (17 lb ft).

  15. Object Number: 2028247  Size: SH
  16. Install the charge air cooler inlet air tube (2).
  17. Install the 3 charge air cooler inlet air tube bolts (1) and tighten to  10 N·m (89 lb in).
  18. Install the 2 hose clamps (3).
  19. Install the charge air cooler inlet air tube bolt (4) and tighten to  10 N·m (89 lb in).
  20. Install the generator and air conditioning compressor and power steering pump belt. Refer to Generator and Air Conditioning Compressor and Power Steering Pump Belt Replacement.
  21. Install drivetrain and front suspension frame. Refer to Drivetrain and Front Suspension Frame Replacement.
  22. Install the front compartment insulator. Refer to Front Compartment Insulator Replacement.
  23. Lower vehicle full height.