GM Service Manual Online
For 1990-2009 cars only

    Object Number: 865479  Size: SH
  1. Remove the air cleaner and duct assembly. Refer to Air Cleaner Housing and Duct Assembly Replacement .
  2. Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 863525  Size: SH
  3. Disconnect the negative battery cable from the battery.
  4. Disconnect the positive battery cable from the battery.

  5. Remove the hold-down retaining nut and screws, and lift them off the battery hold-down retainer.
  6. Lift the battery out of the vehicle, and place the battery in a safe location.


    Object Number: 863527  Size: SH
  7. Disconnect the powertrain control module (PCM) J2 (black 28-way) harness connector by moving the locking device toward the fender.
  8. Remove the PCM attachment bolts.
  9. Remove and flip the PCM on its side, out of the way.
  10. Remove the battery tray bolts and the tray.
  11. One bolt is located in the fender well.


    Object Number: 863627  Size: SH
  12. Back out the transaxle connector bolt and disconnect the transaxle connector.

  13. Object Number: 863629  Size: SH

    Notice: ABS equipped vehicles require the master cylinder to be moved off booster studs and the ABS mid-rail bracket bolt removed to allow the system to be lifted slightly for removal of the valvebody cover. Use care not to bend or kink brake lines. After removing the valvebody cover place the master cylinder back on the booster studs.

  14. For antilock brake system (ABS) equipped vehicles, remove the master cylinder-to-booster nuts and the ABS mid-rail bracket bolt.
  15. Remove the valvebody cover.

  16. Object Number: 863635  Size: SH

    Notice: Do not remove the bolt indicated in the drawing. This bolt holds the upper and lower valvebody together as the valvebody is removed. If bolt is removed in the vehicle, parts will fall into the transaxle.

  17. Remove the 11 valvebody-to-case bolts, identified on illustration by the heavy circles.
  18. Pull the valvebody up and disengage it from the manual valve link.
  19. Remove the valvebody.