GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2007 🢒 H3 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Inflatable Restraint Front End Sensor Replacement

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.

    Caution: 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 engine shield. Refer to Engine Shield Replacement .
  3. Loosen the fasteners (1) retaining the front discriminating sensors to the radiator support.

    4. Object Number: 1277247 Size: SH
  4. Remove the sensor assembly from the radiator support.

    5. Object Number: 1277248 Size: SH
  5. Position the sensor assembly, to gain access to the electrical connector.
  6. Remove the connector-position assurance (CPA) from the sensor electrical connector.
  7. Disconnect the sensor electrical connector.
  8. Remove the sensor (1) from the vehicle.

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

    2. Object Number: 1277248 Size: SH
  2. Position the sensor (1) near the radiator support.
  3. Connect the sensor electrical connector.
  4. Install the CPA to the sensor electrical connector.

    5. Object Number: 1277247 Size: SH
  5. Install the sensor assembly to the radiator support.

    6. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the 2 fasteners (1) retaining the discriminating sensor assembly to the radiator support.

    7. Tighten
    Tighten the bolts to 9 N·m (80 lb in).

  7. Install the engine shield. Refer to Grille Replacement .
  8. Enable the SIR system. Refer to SIR Disabling and Enabling .