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Old 12-23-2011, 12:49 PM   #1
waynep
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Brake Light stays on ???????????

On my 72 the brake light stays on. I have a good break peddle and the e brake works good also. Why is the light on??
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Old 12-23-2011, 12:52 PM   #2
68gmsee
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Re: Break Light stays on ???????????

Check the switch above the brake pedal under the dash. If you disconnect it and the light goes off, the switch is probably bad or not adjusted properly.
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Old 12-23-2011, 12:55 PM   #3
hugger6933
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Re: Break Light stays on ???????????

Make sure that the E-brake pedal is all the way up. Next the brake proportionig valve has a plungerin it that senses difference in the valve . That valve has a tendency to get stuck in one position causing the lamp
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Old 12-23-2011, 02:28 PM   #4
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Re: Brake Light stays on ???????????

THERE IS NO BRAKE LIGHT WHATSOEVER FOR EMERGENCY BRAKE

if your dash brake light is on there is a problem with your proportioning system
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Old 12-23-2011, 02:36 PM   #5
68gmsee
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Re: Brake Light stays on ???????????

Oops. I didn't notice that the "light" was singular. Disregard my post above.

Also check fluid level in m.c.
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Old 12-24-2011, 11:35 AM   #6
waynep
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Re: Brake Light stays on ???????????

Thanks Guys
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Old 12-28-2011, 06:12 PM   #7
sneezys72
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Re: Brake Light stays on ???????????

Does anyone have a pic of the pin in the normal position in the proportioning valve? My light came on after bleeding my brakes and I have re-bled them. The air is all out but my brake light is staying on.
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Old 12-28-2011, 08:34 PM   #8
Lee H
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Re: Brake Light stays on ???????????

Shop manual has a procedure for bleeding that includes using a special tool to keep the proportioning valve in the correct position.
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Old 12-28-2011, 11:09 PM   #9
bradley7576
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Re: Brake Light stays on ???????????

is the wire plugged in to the mc?
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Old 12-28-2011, 11:09 PM   #10
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Re: Brake Light stays on ???????????

sorry i meant the valve
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Old 12-29-2011, 10:13 AM   #11
Jack_71C10
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Re: Brake Light stays on ???????????

You most likely have a leak somewhere.
When you lose pressure in 1 system (front or rear) the proportioning valve
will close off that system. So you will still have a firm pedal but you will
only be using front brakes or rear breaks. I would guess its your back
brakes that are leaking, because you would notice not having front brakes.
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