GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 41545 Park Neutral Position Switch Tool

Removal Procedure

  1. Remove the automatic transmission range select lever. Refer to Automatic Transmission Range Selector Lever Replacement .

  2. Object Number: 1547448  Size: SH
  3. Disconnect the PNP switch electrical connector (3) from the PNP switch (4).
  4. Remove the PNP switch bolt (2) and stud (1).
  5. Remove the PNP switch (4) from the transaxle.

Installation Procedure


    Object Number: 1547448  Size: SH
  1. Make sure the transaxle manual shaft is in the Neutral position.
  2. Align the flats on the park/neutral position (PNP) switch with the transaxle manual shaft and install the PNP switch.
  3. Loosely install the PNP switch bolt (2) and stud (1).
  4. Connect the PNP switch electrical connector (3).
  5. Important: After adjusting the switch, verify the engine only starts in Park or Neutral. If the engine starts in any other position, adjust the switch.


    Object Number: 893833  Size: SH
  6. Insert the J 41545 as shown and rotate the PNP switch until the tool drops onto position.
  7. Notice: Refer to Fastener Notice in the Preface section.

  8. Tighten the PNP switch bolt and stud.
  9. Tighten
    Tighten the bolt and stud to 20 N·m (15 lb ft).

  10. Remove the alignment tool.
  11. Install the automatic transmission range select lever. Refer to Automatic Transmission Range Selector Lever Replacement .

Special Tools

J 41545 Park Neutral Position Switch Tool

Removal Procedure

  1. Remove the automatic transmission range select lever. Refer to Automatic Transmission Range Selector Lever Replacement.

  2. Object Number: 1547448  Size: SH
  3. Disconnect the PNP switch electrical connector (3) from the PNP switch (4).
  4. Remove the PNP switch bolt (2) and stud (1).
  5. Remove the PNP switch (4) from the transaxle.

Installation Procedure


    Object Number: 1547448  Size: SH
  1. Make sure the transaxle manual shaft is in the Neutral position.
  2. Align the flats on the park/neutral position (PNP) switch with the transaxle manual shaft and install the PNP switch.
  3. Loosely install the PNP switch bolt (2) and stud (1).
  4. Connect the PNP switch electrical connector (3).
  5. Note: After adjusting the switch, verify the engine only starts in Park or Neutral. If the engine starts in any other position, adjust the switch.


    Object Number: 893833  Size: SH
  6. Insert the J 41545 as shown and rotate the PNP switch until the tool drops onto position.
  7. Caution: Refer to Fastener Caution in the Preface section.

  8. Tighten the PNP switch bolt and stud to 20 N·m (15 lb ft).
  9. Remove the alignment tool.
  10. Install the automatic transmission range select lever. Refer to Automatic Transmission Range Selector Lever Replacement.