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Accessory and Liftgate Control Module Replacement

WARNING: This page is about a different car, the 2020 Cadillac CT6. However, it is still accessible from the selected car via links, so may be relevant.
GM4256141Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Rear Compartment Lid Inner Panel Trim Replacement
1 Accessory Liftgate Control Module

Procedure

  1. Disconnect the electrical connector.
  2. Perform the necessary programming and setup procedure:Control Module References