Horn went out - Chevy and GMC Duramax Diesel Forum
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post #1 of 3 (permalink) Old 06-02-2019, 06:46 PM Thread Starter
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I changed my high and low beams today with LEDs and when I put it all back together I had a slew of trouble codes, a check engine light, and now my horn won’t work. I cleared the trouble codes with my CTS2 and they haven’t come back on yet, but the horn still won’t work. What could it be besides the fuse?

2017 Summit White L5P--H&S Motorsports Billet Fuel Filter Housing

Sold: 2009 2500HD LT 4X4 LMM-Bilstein 5100, Toyo Open Country A/T II 285/75-16
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post #2 of 3 (permalink) Old 06-03-2019, 09:18 AM
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I would think you missed a supply line or a ground somewhere.
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post #3 of 3 (permalink) Old 06-03-2019, 05:37 PM Thread Starter
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I went in a took everything apart again and jiggled the horn wires and it started working again as it did before. Still sounds extremely wimpy, but at least it is working a little.

2017 Summit White L5P--H&S Motorsports Billet Fuel Filter Housing

Sold: 2009 2500HD LT 4X4 LMM-Bilstein 5100, Toyo Open Country A/T II 285/75-16
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