GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 25025 Guide Pins


    Object Number: 25495  Size: SH
  1. Inspect the valve body spacer plate (19) for the following:
  2. • Bends or damage
    • Plugged holes

    Object Number: 20766  Size: SH
  3. Inspect each check valve seat one at a time for excessive peening. Place a ball check valve (16) on each seat and use a flashlight in order to look for visible light between the valve and its seat.

  4. Object Number: 25491  Size: SH
  5. Assemble the ball check valves (2, 3, 4, 5, 6) into the case cover.
  6. Use TRANSJEL™ or equivalent in order to hold the ball valves in position.

  7. Object Number: 25493  Size: SH
  8. Install two J 25025 guide pins.
  9. Assemble the valve body spacer plate (20) and two spacer plate gaskets (19).
  10. Insert the ball valve (16) onto the spacer plate (20). Retain with TRANSJEL™.