Removal Procedure

Caution: Be careful when you handle a sensor. Do not strike or bit 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.
2. Disconnect the electrical connectors from the MAF and the IAT sensors.
3. Loosen the clamp.
4. Remove the air tube from the throttle body air intake cover.
5. Remove the bolts.
6. Remove the upper radiator shroud.
7. Remove the fan and clutch assembly.
8. Remove the lower radiator shroud.
9. Disconnect the electrical connector from the SIR sensor at the top of the cradle (1).
10. Remove the bolts (2).
11. Remove the SIR sensor (3) from the cradle.

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.

12. Perform the following steps in order to complete the first fastener repair:

12.1. Remove and discard the improperly installed rivet.
12.2. Reattach sensor with new rivet (GM P/N 15715058) or equivalent.
13. Perform the following steps in order to complete the second fastener repair:
13.1. Remove the improperly installed rivet.
13.2. Enlarge the mounting holes in the lower radiator support to 9.0 mm (0.35 in).
13.3. Insert and properly seat rivnut (GM PIN 15699834) or equivalent.

Notice: Refer to Fastener Notice in Cautions and Notices.

13.4. Install sensor with screw (GM P/N 11515664) or equivalent.

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