GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 S10 Pickup - 2WD 🢒 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: 39367 Size: SH
  1. Disable the SIR system. Refer to Disabling the SIR System .
  2. Remove off road skid plate if equipped.
  3. Remove the Connector Position Assurance (CPA) from the inflatable restraint front end discriminating sensor harness connector.
  4. Disconnect the inflatable restraint front end discriminating sensor harness connector from the sensor.

    5. Object Number: 9405 Size: SH
  5. Drill out the mounting rivets.

    6. Object Number: 39372 Size: SH
  6. Remove the inflatable restraint front end discriminating sensor from the vehicle.

Important: The following procedures should be utilized in the event that sensor mounting holes or fasteners are damaged to the extent that the sensor can no longer be properly mounted.

    • First Fastener Repair
        1. Remove and discard the improperly installed rivet.
        2. Reattach sensor with new rivet.
    • Second Fastener Repair
        1. Remove the improperly installed rivet.
        2. Enlarge the mounting holes in the lower radiator support to 9.0 mm (0.35 in).
        3. Insert and properly seat rivnut GM P/N 15715058

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.

        4. Install sensor with screw.

Tighten
Tighten fasteners to 8.0 N·m (71 lb in).

Installation Procedure

    Object Number: 39372 Size: SH
  1. Install the inflatable restraint front end discriminating sensor to the lower radiator support surface make sure the arrow is pointing toward the front of the vehicle.

    2. Object Number: 9405 Size: SH
  2. Install the inflatable restraint front end discriminating sensor mounting rivets (P/N 15715058).

    3. Object Number: 39367 Size: SH
  3. Connect the inflatable restraint front end discriminating sensor harness connector to the sensor.
  4. Install the Connector Position Assurance (CPA) to the inflatable restraint front end discriminating sensor harness connector.
  5. Install the off road skid plate in equipped.
  6. Enable the SIR system. Refer to Enabling the SIR System .