04-03-2007, 12:58 PM | #1 |
Registered User
Join Date: Nov 2002
Location: Toronto, Ontario
Posts: 85
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Brake lights
So my brake lights don't work, but my turn signals do. There's power going in and out of my brake light switch. The schematic in the Haynes manual shows the wire going to what looks like the steering column/hazard assembly. Has anyone had to fix it there?
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86 GMC C15 swb. 350/TH350, fully loaded, but wish I had overdrive! |
04-03-2007, 02:23 PM | #2 |
The Crazy Machanic
Join Date: Jan 2007
Location: Nokesville Va
Posts: 1,437
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Re: Brake lights
I have one idea check the bulb housings they might be dirty or corroded. It happened to my front lights might happen to a rear.
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04-03-2007, 03:39 PM | #3 |
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Join Date: Nov 2002
Location: Toronto, Ontario
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Re: Brake lights
Nah, both turn signals and running lights work in back... plus the turn signals use the same wires as brake lights, that's why I figure the problem's in the column somewhere
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86 GMC C15 swb. 350/TH350, fully loaded, but wish I had overdrive! |
04-03-2007, 04:06 PM | #4 |
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Join Date: Dec 2006
Location: Central Maine
Posts: 210
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Re: Brake lights
It's a longshot... I had a similar problem, although not on a similar vehicle.... On my Cutlass, voltage to my brake lights travelled through the multi-function switch inside the column. The switch was worn and seperating to a point where the contacts wouldn't touch.
If these trucks have a similar design, the problem will be obvious upon visual inspection of the switch. |
04-03-2007, 07:57 PM | #5 |
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Join Date: Nov 2002
Location: Toronto, Ontario
Posts: 85
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Re: Brake lights
I'd bet the steering columns and wiring inside are pretty similar if the Cutlass was an older model... I'm going to check inside the column Tuesday after work so we'll see. I'm assuming the multifunction switch is the turn/hazard etc in one?
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86 GMC C15 swb. 350/TH350, fully loaded, but wish I had overdrive! |
04-05-2007, 12:54 PM | #6 |
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Join Date: Nov 2002
Location: Toronto, Ontario
Posts: 85
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Re: Brake lights
Checked it out last night, got the steering column apart down to the signal switch...and then I found it was a bad connection at the bottom of the sterring column. Oh well, at least they work now!
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86 GMC C15 swb. 350/TH350, fully loaded, but wish I had overdrive! |
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