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Old 11-03-2023, 09:39 AM   #8
ctrlz


 
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP
Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,225
I have repair manual for 2016/17, so hope not much has changed.
I think the relay controlling your low beams may be stuck on.
Do you have high intensity discharge lighting?
Do High beams turn on/off normally?
Assuming "yes" to both questions:
the controlling relays and fuses are in the underhood fuse block at right front of engine compartment.
the low beam signal powering the relay comes off pin 13 of the BCM behind left side of dash. The wire is described as "BRN/YEL" which i think means brown with yellow stripe. That wire enters the underhood block at position 24. I would check if that wire is receiving 12V when your lights are stuck on. if 12V is present, the BCM is suspect. If no voltage, the relay is stuck on.
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