GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Cavalier 🢒 Restraints 🢒 SIR 🢒 Inflatable Restraint Front End Discriminating Sensor Replacement

Caution: Be careful when you handle a sensor. Do not strike or jolt a sensor. Before applying power to a sensor:

   • Remove any dirt, grease, etc. from the mounting surface.
   • Position the sensor horizontally on the mounting surface.
   • Point the arrow on the sensor toward the front of the vehicle.
   • Tighten all of the sensor fasteners and sensor bracket fasteners to the specified torque value.
Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.

Removal Procedure

    Object Number: 202134 Size: SH
  1. Disable the SIR system. Refer to Disabling the SIR System .
  2. Remove the Connector Position Assurance (CPA) from the inflatable restraint front end discriminating sensor harness connector.

    3. Object Number: 202138 Size: SH
  3. Disconnect the inflatable restraint front end discriminating sensor harness connector from the sensor.

    4. Object Number: 202141 Size: SH
  4. Remove the inflatable restraint front end discriminating sensor mounting fasteners (2).
  5. Remove the inflatable restraint front end discriminating sensor (1) from the hood latch support bracket (3).

Installation Procedure

    Object Number: 202141 Size: SH
  1. Install the inflatable restraint front end discriminating sensor (1) to the hood latch support bracket (3).

    2. 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 mounting fasteners (2).

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


    Object Number: 202138 Size: SH
  3. Connect the inflatable restraint front end discriminating sensor harness connector to the sensor.

    4. Object Number: 202134 Size: SH
  4. Install the Connector Position Assurance (CPA) to the inflatable restraint front end discriminating sensor harness connector.
  5. Enable the SIR system. Refer to Enabling the SIR System .