GM Service Manual Online
For 1990-2009 cars only

Special Tools

J-39194-C Oxygen Sensor Wrench

Removal Procedure

  1. Disconnect the heated oxygen sensor connector.
  2. Separate the wire harness grommet.
  3. Remove the heated oxygen sensor for AWD.

  4. Object Number: 2016575  Size: SH
  5. Using the J-39194-C wrench  (1) , remove the heated oxygen sensor.

  6. Object Number: 2016577  Size: SH
  7. Disconnect the heated oxygen sensor connector (1).
  8. Remove the heated oxygen sensor for FWD.

  9. Object Number: 2016579  Size: SH
  10. Using the J-39194-C wrench  (1) , remove the heated oxygen sensor.

Installation Procedure


    Object Number: 2016582  Size: SH
  1. Install the heated oxygen sensor for AWD.
  2. Caution: Refer to Fastener Caution in the Preface section.

    Note: This torque value can be obtained by using a torque wrench with a fulcrum length of 300 mm (11.81 in.) and the J-39194-C wrench with 30 mm (1.18 in). This torque value is effective when the J-39194-C wrench is parallel to the torque wrench.

  3. Using the J-39194-C wrench  (1) , install the heated oxygen sensor and tighten.
  4. • Without the J-39194-C wrench to 44 N·m (32 lb ft)
    • With the J-39194-C wrench to 40 N·m (30 lb ft)
  5. Connect the wire harness grommet.
  6. Connect the heated oxygen sensor connector.

  7. Object Number: 2016584  Size: SH
  8. Install heated oxygen sensor for FWD.
  9. Note: 

       • This torque value can be obtained by using a torque wrench with a fulcrum length of 300 mm (11.81 in) and a J-39194-C wrench with 30 mm (1.18 in)
       • This torque value is effective when a J-39194-C wrench is parallel to the torque wrench.

  10. Using the J-39194-C wrench  (1) , install the heated oxygen sensor and tighten.
  11. • Without the J-39194-C wrench to 44 N·m (32 lb ft)
    • With the J-39194-C wrench to 40 N·m (30 lb ft)

    Object Number: 2016577  Size: SH
  12. Connect the heated oxygen sensor connector (1).
  13. Inspect for exhaust leaks.