GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 35534 Piston Cover Depressor
    • J 36850 Transjel® Transmission Assembly Lubricant

    Object Number: 143425  Size: SH

    Notice: If the intermediate band appears excessively worn or damaged and must be replaced, soak the new brake band in Dexron®-III automatic transmission fluid GM P/N 12341643, or equivalent, for two hours prior to installation. This procedure causes the band material to permeate with fluid, which will prevent band overheating on first time application.

  1. Inspect the following parts:
  2. • The intermediate band for cracks or damage
    • The intermediate servo case bore for pitting, scars or sharp edges

    Important: In the following step, do not over-bend or overextend the band, which may result in cracking and damage. You must install the band in the correct direction with the intermediate band anchor pin strap above the servo piston rod apply strap.

  3. Install the intermediate band (751) into the transaxle case.

  4. Object Number: 143426  Size: SH

    Important: Lubricate the piston and seals with J 36850 . Confirm that the piston rod is engaged in the intermediate band.

  5. Inspect the piston rod seal for cuts or damage. Replace as necessary.
  6. Install the piston rod (752) and the piston rod washer spring (756) into the servo piston (758).
  7. Inspect the servo piston seal rings for cuts or damage and replace as necessary. Inspect the servo piston for cracks or porosity.

  8. Object Number: 143428  Size: SH
  9. Install the intermediate servo piston (758).
  10. Inspect the servo cover seals (761) for cuts or damage. Replace as necessary.
  11. Inspect the servo cover for cracks or porosity.
  12. Install the servo cover (762). Lubricate the servo cover and seals with J 36850 .
  13. Install a J 35534 and compress the servo cover until you can fit the servo cover snap ring.
  14. Install the servo cover snap ring.
  15. Remove the J 35534 .