GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 DeVille 🢒 Restraints 🢒 SIR 🢒 Inflatable Restraint Front End Sensor Replacement

Removal Procedure

    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. Object Number: 709876 Size: SH
  2. Remove the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
  3. Remove the connector position assurance (CPA) (5) from the inflatable restraint front end discriminating sensor wiring harness connector (4).
  4. Disconnect the inflatable restraint front end discriminating sensor wiring harness connector (4) from the inflatable restraint front end discriminating sensor (1).

    5. Important: The inflatable restraint front end discriminating sensor mounting fastener (3) has left handed threads.

  5. Through the access hole located in the bottom of the lower tie bar, loosen the inflatable restraint front end discriminating sensor mounting fastener (3).
  6. Remove the inflatable restraint front end discriminating sensor (1) from the lower tie bar by lifting upward and sliding rearward out of the key hole slot (2).

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

    2. Object Number: 709876 Size: SH

    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.

  2. Install the inflatable restraint front end discriminating sensor (1) horizontally into the key hole slot (2) located in the lower tie bar.

    3. Point the arrow on the sensor toward the front of the vehicle.

    Tighten
    Tighten the fastener (3) to 9 N·m  (80 lb in).

  3. Connect the inflatable restraint front end discriminating sensor harness wiring connector (4) to the inflatable restraint front end discriminating sensor (1).
  4. Install the CPA (5) to the inflatable restraint front end discriminating sensor wiring harness connector (4).
  5. Install the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
  6. Enable the SIR system. Refer to SIR Disabling and Enabling .