GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Savana 🢒 Transmission 🢒 Automatic Transmission - 4L80-E/4L85-E 🢒 Overrun Clutch Assembly Assemble

Special Tools

    • J 23327 Clutch Spring Compressor
    • J 38729 Overrun Clutch Piston Seal Protector
    • J 38734 Intermediate Spring Compressor Adapter

For equivalent regional tools, refer to Special Tools.


    Object Number: 31117 Size: SH
  1. Install the J 38729 seal protector onto the overrun clutch housing assembly (504).
  2. Lubricate the seal on the overrun clutch piston assembly (505) with DEXRON®VI transmission fluid.
  3. Assemble the overrun clutch piston assembly (505) into the overrun clutch housing assembly (504).

    4. Caution: Keep the overrun clutch piston assembly level and rotate the piston in order to avoid damaging the seal.

  4. Rotate the overrun clutch piston (505) in order to aid in assembly.

    5. Object Number: 31119 Size: SH
  5. Install the overrun clutch spring assembly (506) onto the overrun clutch piston assembly (505).
  6. Using the J 23327 spring compressor and the J 38734 spring compressor adapter , compress the overrun clutch spring assembly (506).
  7. Install the overrun clutch spring retainer ring (507).

    8. Object Number: 54675 Size: SH

    Note: Alternate the clutch plates, starting with the steel clutch plate (508) (3 steel, 3 composite).

  8. Install the overrun clutch plates (508, 509).
  9. Install the overrun clutch backing plate (510).

    10. Object Number: 31112 Size: SH
  10. Install the overrun clutch backing plate retainer ring (511) on the overrun clutch housing assembly (504).