GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2009 🢒 Ascender - 4WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Inflatable Restraint Front End Sensor Replacement

Removal Procedure

    Warning: Refer to SIR Warning in the Preface section.

    Warning: Do not strike or jolt the inflatable restraint front end sensor. Before applying power to the front end sensor make sure that it is securely fastened. Failure to observe the correct installation procedure could cause SIR deployment, personal injury, or unnecessary SIR system repairs.

  1. Disable the SIR system. Refer to SIR Disabling and Enabling.
  2. Remove the grille. Refer to Grille Replacement.

    3. Object Number: 842975 Size: SH
  3. Remove the headlamp wire harness from the retaining clip (1).

    4. Object Number: 842985 Size: SH
  4. Raise and support the headlamp wire harness (1) to gain access to the front end sensor.

    5. Object Number: 842968 Size: SH
  5. Loosen the bolts (1) retaining the sensor to the frame.

    6. Object Number: 742124 Size: SH
  6. Remove the sensor assembly from the frame (1).

    7. Object Number: 842979 Size: SH
  7. Position the sensor assembly above the front bumper.
  8. Remove the retaining bolts and protective cover (1) from the sensor.
  9. Remove the connector-position assurance (CPA) from the sensor electrical connector.
  10. Disconnect the sensor (2) electrical connector.
  11. Remove the sensor from the vehicle.

Installation Procedure
  1. Remove any dirt, grease, or other impurities from the mounting surface.

    2. Object Number: 842979 Size: SH
  2. Position the sensor assembly horizontally above the front bumper.
  3. Connect the sensor (2) electrical connector.
  4. Install the connector-position assurance (CPA) to the sensor electrical connector.
  5. Install the retaining bolts and protective cover (1) to the sensor.

    6. Object Number: 742124 Size: SH
  6. Position the sensor assembly horizontally to the frame (1).
  7. Point the arrow on the sensor toward the front of the vehicle.

    8. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 842968 Size: SH
  8. Install the 2 bolts (1) retaining the discriminating sensor assembly to the frame.

    9. Tighten
    Tighten the bolts to 8 N·m (71 lb in).


    Object Number: 842985 Size: SH
  9. Position the headlamp wire harness (1) to the retaining clip.

    10. Object Number: 842975 Size: SH
  10. Install and secure the headlamp wire harness in the retaining clip (1).
  11. Install the grille. Refer to Grille Replacement.
  12. Enable the SIR system. Refer to SIR Disabling and Enabling.