Installation Procedure

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Trailer Lamp Control Module (1) - Install
Courtesy of GENERAL MOTORS COMPANY

CAUTION:
Fastener Caution

Trailer Lamp Control Module Nut (1) - Install and tighten to 9 N.m (80 lb in) [2x]
Connect the trailer lamp control module electrical connector.
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Quarter Lower Rear Trim Panel - Right Side (1) - Install - Quarter Lower Rear Trim Panel Replacement (Right Side)
Program the trailer lamp control module. Control Module References