Front End Discriminating Sensor Replacement

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
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. Drill out the mounting rivets

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.
6. Remove the inflatable restraint front end discriminating sensor from the vehicle.






7. Perform the following steps in order to complete the first fastener repair:
7.1. Remove and discard the improperly installed rivet.
7.2. Reattach sensor with new rivet.
8. Perform the following steps in order to complete the second fastener repair:
8.1. Remove the improperly installed rivet.
8.2. Enlarge the mounting holes in the lower radiator support to 9.0 mm (0.35 in).
8.3. Insert and properly seat the rivnut.

NOTE: Refer to Fastener Notice in Service Precautions.

8.4. Install sensor with screw.

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

INSTALLATION PROCEDURE




1. Install the inflatable restraint front end discriminating sensor to the lower radiator support surface.
Ensure that the arrow is pointing toward the front of the vehicle.




2. Install the inflatable restraint front end discriminating sensor mounting rivets (GM P/N 15715058).




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.