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Home >> GMC >> 2021 >> Sierra 2500 HD AT4, 6.6L Eng VIN 7 >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> TRAILERING Systems >> Repair Instructions >> Trailer Lamp Control Module Replacement
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Trailer Lamp Control Module Replacement

GM5209978Courtesy of GENERAL MOTORS COMPANY
Callout Component Name

Preliminary Procedure

  1. Raise and support the vehicle. Lifting and Jacking the Vehicle
  2. Lower and reposition the spare tire.
1 Trailer Lamp Control Module Bracket Nut[2x]
CAUTION:

Refer to Fastener Caution .


Tighten 
9N.m (80 lb in)
2 Trailer Lamp Control Module

Procedure

  1. Disconnect the electrical connector.
  2. After installation, program the trailer lamp control module. Control Module References