GM Service Manual Online
For 1990-2009 cars only

Clutch Pressure Plate Adjustment On-Vehicle


    Object Number: 71518  Size: SH

    Important: The aid of an assistant will be necessary during this procedure.

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the engine flywheel inspection cover retaining bolts.
  3. Remove the engine flywheel inspection cover.

  4. Object Number: 173631  Size: SH
  5. Have an assistant press the clutch pedal until tension is released from the clutch pressure plate stepped adjusting ring, then continue to hold the pedal.
  6. Hold 2 screwdrivers or other suitable tools, and place them against 2 of the 3 stepped adjusting ring tension spring stops (1), just ahead of the adjusting ring tension springs.

  7. Object Number: 174781  Size: SH
  8. Use the screwdrivers to rotate the stepped adjusting ring counterclockwise, compressing the tension springs, until the adjusting ring steps are fully adjusted out. Continue to hold in position.
  9. Have your assistant release the clutch pedal.
  10. Release the adjusting ring tension spring stops.

  11. Object Number: 71518  Size: SH
  12. Install the engine flywheel inspection cover.
  13. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  14. Install the engine flywheel inspection cover retaining bolts.
  15. Tighten
    Tighten the engine flywheel inspection cover retaining bolts to 25 N·m (18 lb ft).

  16. Lower the vehicle.

Clutch Pressure Plate Adjustment Off-Vehicle


    Object Number: 173634  Size: SH
  1. Place the clutch pressure plate, flat surface down, on a press.
  2. Compress the pressure plate diaphragm spring fingers until tension is released from the stepped adjusting ring.
  3. Hold 2 screwdrivers or other suitable tools, and place them against 2 of the 3 stepped adjusting ring tension spring stops (1), just ahead of the adjusting ring tension springs.

  4. Object Number: 174781  Size: SH
  5. Using the screwdrivers, rotate the stepped adjusting ring counterclockwise (compressing the tension springs) until the adjusting ring steps are fully adjusted out, then continue to hold in position.
  6. Release the press pressure from the pressure plate diaphragm spring fingers.
  7. Release the adjusting ring tension spring stops.
  8. Remove the pressure plate from the press.