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Auto Headlight not working after replacing the turn signal switch?

Tiny
CANDO1
  • MEMBER
  • 2008 CADILLAC STS
  • 3.6L
  • V6
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
My high beams were stuck on unless the left turn signal is on, so I put on a new turn signal switch. No more constant High Beams, however the auto lights I think are not working. When the old switch was on auto the icon would light up and the body lights with headlights would be on. I'm wondering, did I get a bad switch?
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Friday, May 5th, 2023 AT 6:38 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
You could have a bad switch or the wrong switch, here is the correct part number for the switch and instructions on how to change it correctly.

Turn Signal Switch : 20808029 $107.04

Can I ask if the switch is aftermarket? Check out the images (below). Please let us know what happens.
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Saturday, May 6th, 2023 AT 11:44 AM

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