GM Service Manual Online
For 1990-2009 cars only

Phase Adjustment Procedure


    Object Number: 795427  Size: SH

    Important: The adjuster is out of phase when 1 adjuster reaches either the maximum horizontal or the maximum vertical travel before the other adjuster. An out-of-phase adjuster can occur over time or when the seat is serviced.

  1. Operate the horizontal adjuster switch until one adjuster reaches a full-forward position.
  2. Detach the horizontal drive cable (1) from the full-forward adjuster.
  3. Operate the horizontal adjuster switch until the other adjuster reaches a full-forward position.
  4. Connect the horizontal drive cable (1).
  5. Inspect the horizontal travel.
  6. Operate the vertical adjuster switch until one adjuster reaches the full-up position at both the front and the rear.
  7. Disconnect both the front and the rear vertical drive cables (2) from the full-up adjuster.
  8. Operate the vertical adjuster switch until the other adjuster reaches the full-up position at both the front and the rear.
  9. Connect the vertical drive cable (2).
  10. Inspect the vertical drive cable.