GM Service Manual Online
For 1990-2009 cars only

Special Tools

EN 46109 Guide Pin Set

Removal Procedure

  1. Remove the front cover. Refer to Engine Front Cover Replacement.
  2. Install the engine support fixture. Refer to Engine Support Fixture.
  3. Remove the right side engine mount. Refer to Engine Mount Replacement - Right Side.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  5. Drain the engine oil and remove the oil filter. Refer to Engine Oil and Oil Filter Replacement.
  6. Remove the catalytic converter. Refer to Catalytic Converter Replacement - Left Side.
  7. Remove the air conditioning (A/C) compressor bolts and reposition.. Refer to Air Conditioning Compressor Replacement.
  8. Remove the oil pan to transmission bolts

  9. Object Number: 1831994  Size: SH
  10. Remove the oil pan bolts.
  11. Remove the oil pan.
  12. Clean the oil pan and the engine block gasket surface. Refer to Oil Pan Cleaning and Inspection.

Installation Procedure


    Object Number: 1306197  Size: SH
  1. Install the 8 mm (0.315 in) guides from the EN 46109 into the center oil pan rail bolt hole on each side of the engine block.

  2. Object Number: 1306200  Size: SH
  3. Place a 3 mm (0.118 in) bead (1) of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the block pan rail and the crankshaft rear oil seal housing.

  4. Object Number: 1829127  Size: SH
  5. Position the oil pan onto the block.

  6. Object Number: 1829130  Size: SH
  7. Remove the EN 46109 8 mm (0.315 in) guides from the engine block.

  8. Object Number: 1829119  Size: SH
  9. Loosely install the oil pan bolts.
  10. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1829133  Size: SH
  11. Tighten the oil pan bolts in sequence.
  12. • The 8 mm bolts (1-11) to 23 N·m (17 lb ft).
    • The 6 mm bolts (12, 13) to 10 N·m (89 lb in).
  13. Install the air conditioning (A/C) compressor. Refer to Air Conditioning Compressor Replacement.
  14. Install the catalytic converter. Refer to Catalytic Converter Replacement - Left Side.
  15. Lower the vehicle. Refer to Lifting and Jacking the Vehicle.
  16. Refill the engine oil. Refer to Engine Oil and Oil Filter Replacement.
  17. Install the right side engine mount. Refer to Engine Mount Replacement - Right Side.
  18. Remove the engine support fixture. Refer to Engine Support Fixture.
  19. Install the front cover. Refer to Engine Front Cover Replacement.