GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 14433  Size: SH
  1. Remove the transmission oil pan. Refer to Oil Pan Replacement .
  2. Compress the reverse boost valve sleeve and the related components with a small screwdriver.
  3. Remove the reverse boost valve retaining ring.
  4. Slowly release the spring pressure.

  5. Object Number: 14438  Size: SH
  6. Remove the reverse boost valve sleeve.
  7. Remove the reverse boost valve.

  8. Object Number: 14456  Size: SH
  9. Remove the pressure regulator isolator spring.
  10. Remove the pressure regulator valve spring.
  11. Remove the pressure regulator valve.

Installation Procedure

Tools Required

J 36850 Transmission Assembly Lube


    Object Number: 14456  Size: SH
  1. Install the pressure regulator valve into the oil pump cover bore.
  2. Install the pressure regulator valve spring.
  3. Install the pressure regulator isolator spring.

  4. Object Number: 14438  Size: SH
  5. Install the reverse boost valve and reverse boost valve sleeve and other related components. Retain with J 36850 , or equivalent.

  6. Object Number: 14433  Size: SH
  7. Compress the reverse boost valve sleeve and the related components. Using a small screwdriver.
  8. Install the reverse boost valve retaining ring into the oil pump cover bore.
  9. Install the automatic transmission oil pan. Refer to Oil Pan Replacement .