GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • EN-45000 Remover Oil Seal
    • EN-48251 Installer Oil Seal
    • EN-652 Locking Tool

For equivalent regional tools, refer to Special Tools.

Removal Procedure

  1. Remove the transmission:
  2. • For automatic transmission refer to Transmission Replacement.
    • Remove the torque converter. Refer to Torque Converter Removal.
    • For manual transmission refer to Transmission Replacement.
    • Remove the clutch refer to Clutch Pressure and Driven Plate Replacement.

    Object Number: 2027795  Size: SH
  3. Install EN-652 locking tool  (1) to fix the engine flywheel.

  4. Object Number: 2027797  Size: SH
  5. Remove the 6 engine flywheel bolts (2).
  6. Remove the engine flywheel (1).
  7. Check the crankshaft rear oil seal (1) replace if necessary.

  8. Object Number: 2027860  Size: SH

    Note: Be careful do not damage the sealing surfaces.

  9. Use EN-45000 remover  (1) to remove the crankshaft rear oil seal (2).
  10. Remove the crankshaft rear oil seal (2).

Installation Procedure


    Object Number: 2027864  Size: SH
  1. Use the EN-48251 installer  (2) to install a NEW crankshaft rear oil seal (1).
  2. Install the NEW crankshaft rear oil seal (1).

  3. Object Number: 2027797  Size: SH
  4. Install the engine flywheel (1).
  5. Note: Clean thread before insert bolt with locking compound (red). The maximum installation time including torque check is 10 minutes.

  6. Install the 6 engine flywheel bolts (2).

  7. Object Number: 2027795  Size: SH
  8. Install EN-652 locking tool  (1) to fix the engine flywheel.
  9. Caution: Refer to Fastener Caution in the Preface section.

  10. Tighten the 6 engine flywheel bolts to 105 N·m (78 lb ft).
  11. Install the torque converter. Refer to Torque Converter Installation.
  12. Install the transmission. Refer to Transmission Replacement.
  13. Install the transmission:
  14. • For automatic transmission refer to Transmission Replacement.
    • Install the torque converter. Refer to Torque Converter Removal.
    • For manual transmission refer to Transmission Replacement.
    • Install the clutch refer to Clutch Pressure and Driven Plate Replacement.