GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 Safari - 4WD 🢒 Restraints 🢒 SIR 🢒 Inflatable Restraint Front End Discriminating Sensor Replacement

Removal Procedure

    Object Number: 189098 Size: SH
  1. Disable the SIR system. Refer to Disabling the SIR System .
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Disconnect the inflatable restraint front end discriminating sensor harness connector located at the top of the cradle (1).
  4. Remove the bolts (2).
  5. Remove the inflatable restraint front end discriminating sensor (3) from the cradle.

Installation Procedure

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.


    Object Number: 189098 Size: SH
  1. Install the inflatable restraint front end discriminating sensor to the top of the cradle.

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

  2. Install the inflatable restraint front end discriminating sensor mounting fasteners (2).

    3. Tighten
    Tighten fastener to 6.5 N·m (58 lb in).

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

  3. Perform the following steps in order to complete the first fastener repair:
    4. 3.1. Remove and discard the improperly installed rivet.
    3.2. Reattach the sensor with a new rivet.
  4. Perform the following steps, if needed, in order to complete a second fastener repair:
    5. 4.1. Remove the improperly installed rivet.
    4.2. Enlarge the mounting holes in the lower radiator support to 9.0 mm (0.35 in).
    4.3. Insert and properly seat the rivnut.
    4.4. Install the screw to the sensor.

    Tighten
    Tighten fasteners to 6.5 N·m (58 lb in).

  5. Connect the inflatable restraint front end discriminating sensor harness connector to the sensor.
  6. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  7. Enable the SIR system. Refer to Enabling the SIR System .