GM Service Manual Online
For 1990-2009 cars only

    Object Number: 509579  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) from the case. Remove by pushing the three tabs inward from the outside of the case.