GM Service Manual Online
For 1990-2009 cars only

    Object Number: 25656  Size: SH
  1. Inspect the vehicle speed sensor (62) for damage to the sensor, the electrical connector, or the O-ring (63).
  2. Clean and dry the vehicle speed sensor (62).

  3. Object Number: 20830  Size: SH
  4. Install the O-ring (63) onto the speed sensor (62).
  5. Install the speed sensor (62) into the transmission case.
  6. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  7. Install the speed sensor stud (61).
  8. Tighten
    Tighten the speed sensor stud to 12 N·m (9 lb ft).


    Object Number: 25656  Size: SH
  1. Inspect the vehicle speed sensor (62) for damage to the sensor, the electrical connector, or the O-ring (63).
  2. Clean and dry the vehicle speed sensor (62).

  3. Object Number: 20830  Size: SH
  4. Install the O-ring (63) onto the speed sensor (62).
  5. Install the speed sensor (62) into the transmission case.
  6. Caution: Refer to Fastener Caution in the Preface section.

  7. Install the speed sensor stud (61). Tighten the speed sensor stud to 12 N·m (9 lb ft).