GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Chevrolet W-Series Commercial W4 (W3500/W4500) 🢒 Transmission 🢒 Automatic Transmission - 4L80-E/4L85-E 🢒 Transmission Fluid Pump Cover Assemble

    Object Number: 31197 Size: SH
  1. Install the TCC shift valve spring seat pin (211) into the oil pump cover (206).
  2. Install the TCC shift valve spring seat (225).
  3. Install the TCC shift valve spring (224).
  4. Install the TCC shift valve (223).
  5. Install the pressure regulator (TCC shift) valve bore plug (232).
  6. Install the TCC shift valve bore plug retainer ring (221).
  7. Inspect the TCC shift valve (223) for free movement in the bore.

    8. Object Number: 31198 Size: SH
  8. Install the TCC enable valve (217) into the oil pump cover (206).
  9. Install the TCC enable valve spring (216).
  10. Compress the TCC enable valve spring (216), and insert a small rod into the fluid passage in order to retain the TCC enable valve spring.
  11. Install the TCC enable valve spring retainer sleeve (215).
  12. Remove the small rod.
  13. Inspect the TCC enable valve (217) for free movement in the bore.

    14. Object Number: 31199 Size: SH
  14. Install the converter regulator valve (214) into the oil pump cover (206).
  15. Install the converter regulator valve spring (213).
  16. Install the converter regulator valve bore plug (212).
  17. Install the converter regulator valve bore plug pin (211).
  18. Inspect the converter regulator valve (214) for free movement in the bore.

    19. Object Number: 31200 Size: SH
  19. Install the pressure regulator valve bore plug pin (211) into the oil pump cover (206).
  20. Install the pressure regulator valve bore plug (232).
  21. Install the pressure regulator valve (231).
  22. Install the pressure regulator valve inner (238) and outer (230) springs.
  23. Install the pressure regulator valve spring retainer (229).
  24. Assemble the reverse boost valve (228) into the reverse boost valve bushing (227) with the reverse boost valve stem facing out of the bushing.
  25. Install the reverse boost valve assembly (227, 228).
  26. Install the reverse boost valve bushing retainer ring (226).