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Headlamp Control Module Replacement (T4L without T95 and UVG)

WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
GM5247386
Callout Component Name
Preliminary Procedure 
Headlamp Replacement 
1 Headlamp LED Driver Module Bolt [3x]
Tighten 
2.5 N.m (22 lb in)
2 Headlamp Control Module

Procedure

  1. Disconnect the electrical connectors.
  2. Run all necessary programming and setup procedure. Control Module References