Installation Procedure

Courtesy of GENERAL MOTORS COMPANY

UHF Low Energy Remote Control Access Sensor Transceiver (1) - Install
Ensure that the retaining tabs are fully secured.
Connect the electrical connector.
Courtesy of GENERAL MOTORS COMPANY

NOTE:
The proper position of the underbody rear air rear deflector - rear (1) is above the left and right side rear wheelhouse liners.

Underbody Rear Air Rear Deflector - Rear (1) - Install
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Underbody Rear Air Deflector Retainer (2) - Install [2x]

CAUTION:

Underbody Rear Air Rear Deflector Bolt (1) - Install and tighten [4x] - Fastener Specifications
Courtesy of GENERAL MOTORS COMPANY

Underbody Rear Air Rear Deflector Bolt (1) - Install and tighten [14x] - Fastener Specifications
Remove the support and lower the vehicle.