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

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.

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.

8.4.	Install sensor with screw.

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

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 .