GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Regal 🢒 Restraints 🢒 SIR 🢒 Inflatable Restraint Side Impact Sensor Replacement

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.


    Object Number: 300150 Size: SH

    Caution: Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures 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 center pillar lower trim. Refer to Center Pillar Lower Trim Panel Replacement in Interior Trim.
  3. Loosen the 2 fasteners (2) on the inflatable restraint side impact sensor (1).
  4. Remove the inflatable restraint side impact sensor (1) from the center pillar (3).
  5. Remove the connector position assurance (CPA) from the side impact sensor connector.
  6. Disconnect the side impact sensor connector.

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

    2. Object Number: 300150 Size: SH
  2. Connect the side impact sensor connector.
  3. Install the CPA to the side impact sensor connector.
  4. Install the side impact sensor (1) to the center pillar (3).
  5. Point the arrow on the sensor toward the front of the vehicle.

    6. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Install the fasteners (2) to the side impact sensor (1) and tighten using hand pressure.

    7. Tighten
    Tighten the fasteners to 10 N·m (89 lb in).

  7. Install the center pillar lower trim. Refer to Center Pillar Lower Trim Panel Replacement in Interior Trim.
  8. Enable the SIR system. Refer to SIR Disabling and Enabling .