GM Service Manual Online
For 1990-2009 cars only
Makes šŸ¢’ Chevrolet šŸ¢’ 2008 šŸ¢’ Express - AWD šŸ¢’ Diagnostic Navigation šŸ¢’ Vehicle Diagnostic Information šŸ¢’ Turbocharger Vane Position Sensor Replacement

Removal Procedure
  1. Remove the engine cover. Refer to Engine Cover Replacement .

    2. Object Number: 1731857 Size: SH

    Important: Note wire routing prior to removal.

  2. Disconnect the turbocharger vane position sensor electrical connector.
  3. Remove the turbocharger vane position sensor connector from the bracket on the LH valve cover.

    4. Object Number: 1731868 Size: SH
  4. Remove the turbocharger vane position sensor from the turbocharger.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.

  1. Install the turbocharger vane position sensor to the turbocharger.

    2. Tighten
    Tighten the sensor to 28 NĀ·m (21 lb ft).

  2. Install the turbocharger vane position sensor connector to the bracket located on the LH valve cover.

    3. Object Number: 1731857 Size: SH
  3. Connect the turbocharger vane position sensor electrical connector.

    4. Object Number: 1731868 Size: SH
  4. Install the thermal reflective shield/tape, refer to the following procedure.

Thermal Reflective Shield/Tape Installation

Important: 

   ā€¢ Ensure outside surface of sensor body is clean and oil-free prior to beginning the installation procedure. If sensor body surface is oily, use a mild degreaser in order to remove the oil from the surface. Ensure degreased surface is dry prior to beginning the installation.
   ā€¢ The thermal reflective shield and tie strap are to be installed over the vane position sensor AFTER the sensor is installed and torqued in the turbo centerhousing. Graphics below show the sensor prior to the installation process for clarity purposes only.


    Object Number: 1488378 Size: SH
  1. Peel off the protective backing from the back side of the thermal reflective shield/tape.

    2. Object Number: 1488379 Size: SH
  2. With the sticky side of the shield/tape applied against the sensor body, align the bottom edge of the shield/tape with the bottom edge of the hex, and begin wrapping the sensor.

    3. Object Number: 1488381 Size: SH
  3. Completely wrap the shield/tape around the sensor.

    4. Object Number: 1488385 Size: SH
  4. Tuck the top of the shield/tape under the head of the brass cable crimp sleeve all around, allowing the shield/tape to fold over and overlap itself at the top.

    5. Object Number: 1488387 Size: SH
  5. The top of the shield/tape is now shown tucked under the head of the brass cable crimp sleeve all around.

    6. Object Number: 1488391 Size: SH
  6. Wrap the tie strap around the necked porting of the sensor body just above the hex. Insert the end of the strap in the buckle and tighten by pulling the end with needlenose pliers.

    7. Object Number: 1488393 Size: SH
  7. Bend the end of the tie strap 180 degrees over the top of the buckle.

    8. Object Number: 1488398 Size: SH
  8. Cut off the tie strap using side cutters so that the cut end will lie approximately over the center of the buckle. Push down the end of the tie strap over the buckle in order to minimize protrusion of the cut end or any sharp edges.

    9. Object Number: 1488400 Size: SH
  9. Finished installation is shown.
  10. Install the engine cover. Refer to Engine Cover Replacement .
  11. Perform the turbocharger learn procedure. Refer to Turbocharger Learn .