GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1997 🢒 GMC Suburban - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Forward Clutch Assembly Disassemble

Tools Required

    • J 23327 Clutch Spring Compressor
    • J 25018-A Clutch Spring Compressor Adapter

    Object Number: 31063 Size: SH
  1. Remove the direct clutch hub retainer ring (616).
  2. Remove the direct clutch hub (615).
  3. Remove the forward clutch hub thrust washer (614) (plastic).
  4. Remove the forward clutch hub (613).
  5. Remove the forward clutch housing thrust washer (612) (bronze). The washer may stick to the housing.
  6. Inspect the direct clutch hub (615) for the following:
    7. • Spline wear
    • Open lubrication holes
    • A damaged clutch surface

    Object Number: 54636 Size: SH
  7. Remove the forward clutch steel and composite plates (610, 611).
  8. Remove the forward clutch apply plate (waved) (609).
  9. Inspect the forward clutch plates (609-611) for the following:
    10. • Burning
    • Scoring
    • Flaking
    • Pitting
    • Wear

    Object Number: 31066 Size: SH
  10. Use the J 23327 and the J 25018-A in order to compress the forward clutch spring assembly (607).
  11. Remove the forward clutch spring retainer ring (608).
  12. Remove the tools.
  13. Remove the forward clutch spring assembly (607).
  14. Inspect the forward clutch spring assembly (607) for collapsed spring coils and distortion.

    15. Object Number: 54642 Size: SH
  15. Remove the forward clutch piston (606). This piston is reusable if it is not damaged.
  16. Inspect the forward clutch piston (606) for cracks.
  17. Inspect the forward clutch piston seal for cuts, tears, and nicks.
  18. Inspect the forward clutch piston inner sleeve and seal assembly (685) for cuts, tears, and nicks.
  19. Inspect the forward clutch housing (602) for the following:
    20. • Wear
    • Open lubrication holes
    • Damaged thrust faces
    • Free operation of checkball (rattles)