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Old 12-12-2016, 12:30 PM   #1
prodjay10
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brake warning light on

I replaced a wheel cylinder because it was leaking and even after bleeding both rear lines for a good while, I get the warning light. Any idea why this would happen and how I fix it?
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Old 12-12-2016, 12:45 PM   #2
jjzepplin
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Re: brake warning light on

Your proportioning valve is stuck. It has one wire going to it and activates the brake light. You must reset it. Google how to do it. I have to run to work or I would go thru it with you.
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Old 12-12-2016, 02:18 PM   #3
davepl
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Re: brake warning light on

This should get you a ton of threads on Google from people who've been down that road already:

reset prop valve site:67-72chevytrucks.com
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Old 12-12-2016, 03:01 PM   #4
prodjay10
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Re: brake warning light on

Thanks for the help.
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Old 12-12-2016, 04:27 PM   #5
cdowns
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Re: brake warning light on

read the factory service manual on the proper way to bleed your brakes//will solve your problem
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