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Home >> GMC >> 2021 >> Yukon AT4 >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> TRAILERING Systems >> Repair Instructions >> Trailer Lamp Control Module Replacement >> Installation Procedure

Installation Procedure

  1. GM5587052Courtesy of GENERAL MOTORS COMPANY

    Trailer Lamp Control Module (2) - Install

    2. CAUTION:

    Refer to Fastener Caution .

  2. Trailer Lamp Control Module Bracket Nut (1) - Install and tighten [ 2x ] - Fastener Specifications 
  3. GM5587054Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @ Trailer Lamp Control Module - Connect

  4. Remove the support and lower the vehicle.
  5. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (KL9)
  6. Program the trailer lamp control module. Control Module References
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