GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Open the hood.

  2. Object Number: 1239225  Size: SH
  3. Remove the left front section (1) of the air cleaner assembly.

  4. Object Number: 1757535  Size: SH
  5. Disconnect the electrical connector from the vehicle distance module sensor assembly (2).

  6. Object Number: 1239220  Size: SH
  7. Remove the sensor assembly from the fascia (1).

  8. Object Number: 1239661  Size: SH
  9. Remove the three bolts (1) attaching the sensor assembly to the bracket.

Installation Procedure

  1. Position the sensor assembly to the bracket.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1239661  Size: SH
  3. Hand tighten the three bolts that attach the sensor assembly to the bracket.
  4. Tighten
    Tighten the bolt to 10 N·m (7 lb ft).


    Object Number: 1757535  Size: SH
  5. Connect the electrical connector to the sensor assembly (2).

  6. Object Number: 1239220  Size: SH
  7. Install the sensor assembly cover to the fascia (1).

  8. Object Number: 1239225  Size: SH
  9. Install the left front section (1) of the air cleaner assembly.
  10. Close the hood.
  11. Important: After replacing the sensor assembly the next steps are necessary for the ACC system to perform properly.

  12. With the scan tool, change the Automatic Alignment Learn Status Parameter in the DSCC module scan tool data list to Not Aligned after replacing the sensor assembly . This allows the new sensor assembly to automatically align to the vehicle during normal customer driving. Refer to Control Module References
  13. Performance of the ACC system may be degraded after sensor assembly replacement. Normal customer driving will correct the performance of the ACC system. Refer to Cruise Control Description and Operation
  14. Refer to Control Module References