GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1217556  Size: SH
  1. Remove the two 8 mm bolts (15) from the automatic transmission input (shaft) speed (A/T ISS) sensor and the retainer.
  2. Disconnect the A/T ISS (14) and the harness.
  3. Remove the pass through connector and the automatic transmission wiring harness assembly (12) and O-ring (68) from the case. Remove by pushing the three tabs inward from the outside of the case.