GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

Fog Lights not working

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Old Dec 17, 2007 | 07:07 AM
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Default Fog Lights not working

Well couple weeks ago I was trying to fix my power mirror switch and in the process of looking for a broken wire, something shorted out and blue a fuse for my locks and power windows and mirrors and it drained my battery, anyways I recharged the battery and replaced the fuse and everything was working exactly as they were before, except the fog lights?? So I just got around to checking the fuses the other day, and there was only 1 fuse I could find and it was under the hood, and it was still good. so whats the problem?? is there another fuse somewhere? or?

Thanks, Zach
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Old Dec 17, 2007 | 09:32 AM
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Woah brotha'.....that's a head scratcher. Right off the cuff, the only thing I can think to try is take it back to your dealership and have them Re-Flash the BCM again. It could be that the short caused an overcurrent and it's possible that, it could have spazz'd your BCM, causing it to not recognize that you are Fog Lamp equipped. I've seen stranger ****, but....this one is pretty boggling. Anywho....that's what I'd try first.
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Old Dec 17, 2007 | 10:56 AM
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Awhile back my fogs quit working too, and I tracked the problem down to the headlight switch. Replaced that and everything started working again. If you have a buddy that you can swap switches with try that and see if it helps.
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Old Dec 17, 2007 | 02:42 PM
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Originally Posted by Torque_Wrench
Woah brotha'.....that's a head scratcher. Right off the cuff, the only thing I can think to try is take it back to your dealership and have them Re-Flash the BCM again. It could be that the short caused an overcurrent and it's possible that, it could have spazz'd your BCM, causing it to not recognize that you are Fog Lamp equipped. I've seen stranger ****, but....this one is pretty boggling. Anywho....that's what I'd try first.
Any Idea how much it would cost to reflash it?

Originally Posted by thunder550
Awhile back my fogs quit working too, and I tracked the problem down to the headlight switch. Replaced that and everything started working again. If you have a buddy that you can swap switches with try that and see if it helps.
By the head light switch you mean the **** where you have your dome light over ride etc?
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Old Dec 17, 2007 | 02:44 PM
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Originally Posted by Chevy Cowboy
Any Idea how much it would cost to reflash it?



By the head light switch you mean the **** where you have your dome light over ride etc?
Yes, has the headlight switch, dimmer, and dome override.
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Old Dec 17, 2007 | 03:20 PM
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ive seen those headlight switches cause quite a few problems. i know of a couple a people that had to replace theirs including mine
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Old Dec 17, 2007 | 05:29 PM
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Originally Posted by GTOsRamairSilverado
ive seen those headlight switches cause quite a few problems. i know of a couple a people that had to replace theirs including mine
my buddy has a 99 silvy, Ill swap them see if it helps
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