GM Service Manual Online
For 1990-2009 cars only

Input Speed Sensor Replacement for Pontiac G8 2009

Removal Procedure

  1. Remove the transmission fluid pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement.

  2. Object Number: 1956891  Size: SH
  3. Disconnect the electrical wiring harness connector (1) from the input speed sensor (2).
  4. Remove the input speed sensor retaining bolt (3).

  5. Object Number: 1956891  Size: SH
  6. Remove the input speed sensor (1).
  7. Inspect the input speed sensor (1) for the following conditions:
  8. • Damaged or missing magnet
    • Damaged housing
    • Bent or missing electrical terminals
    • Metal contamination stuck to magnet

Installation Procedure


    Object Number: 1956891  Size: SH
  1. Install the input speed sensor (1).
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the input speed sensor retaining bolt (2) and tighten to 11 N·m (97 lb in).

  4. Object Number: 1956882  Size: SH
  5. Connect the electrical connector (1) to the input speed sensor (2).
  6. Install the transmission fluid pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement.