1992 silverado brake light on dashboard turned on??

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:) :) - 01 Dec 2006 03:45 GMT

The 2 lights together(1 showing an exclamation mark and the other
showing brake) turned on and wont turn off?? If I turn truck off and
restart and drive it takes it a few minutes before it pops back on. Ive
checked emergency brake and its not the switch sticking and the brake
light switch behind the pedal is not sticking and fluid is full. Any
ideas?? Thanks:)Nick

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Charles Bendig - 01 Dec 2006 11:06 GMT

:) wrote:
> The 2 lights together(1 showing an exclamation mark and the other
[quoted text clipped - 3 lines]
> light switch behind the pedal is not sticking and fluid is full. Any
> ideas?? Thanks:)Nick

    I would turn the key to ON and watch for the Brake light to flash. If
it does, see if it flashes like a trouble code. There are on-line guides
to ABS trouble codes.

    If it does not flash, check a service manual for the brake sensors and
ABS module test.

    It could be wire damage to the sensor for the park brake pedal sensor
or ABS sensors.
Charles

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:) :) - 01 Dec 2006 16:22 GMT

Thanks! Do you know where the abs module is located?? Thanks again:)

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:) :) - 02 Dec 2006 03:53 GMT

Actually drove it around today and kept it 35mph and under for an hour
and light does not go on. The second it hits 38 mph the light turns on.
If I turn off truck and drive it to 38 mph it comes on again...??

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shiden_kai - 03 Dec 2006 00:08 GMT

:) :) wrote:

> Actually drove it around today and kept it 35mph and under for an hour
> and light does not go on. The second it hits 38 mph the light turns
> on. If I turn off truck and drive it to 38 mph it comes on again...??

Do you have 4 wheel abs, or just the rear wheel antilock system?
If you have the rear wheel antilock system, there will be a thin black
box right beside the master cylinder. Unplug both connectors with
the key off and leave them off for at least a minute. Then plug them
back in and see what happens. There were some "false" codes that
would set on those types of systems. If the light returns right away,
then you would need to either have it diagnosed properly or not
worry about it. Rear wheel antilock was a pretty lousy system anyway
in those years.

Ian

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:) :) - 03 Dec 2006 05:40 GMT

Hello Ian:) Thanks for the help. I tried it unplugging both of the
plugs and plugged them back in and they came on again when it hit 38
mph. If I leave one of the plugs unplugged everything works the same
but the brake light doesnt come on? What is that box? Do you think it
will damage anything driving around unplugged?? Maybe I will try to
replace that box.... Thanks:)Nel

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shiden_kai - 03 Dec 2006 15:27 GMT

:) :) wrote:

> Hello Ian:) Thanks for the help. I tried it unplugging both of the
> plugs and plugged them back in and they came on again when it hit 38
> mph. If I leave one of the plugs unplugged everything works the same
> but the brake light doesnt come on? What is that box? Do you think
> it will damage anything driving around unplugged?? Maybe I will try
> to replace that box.... Thanks:)Nel

That box is the module for the rear anti-lock brake system.
I wouldn't even bother spending the time and/or money to
fix the system. Usually, the brake system works just fine
without it.

Ian

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:) :) - 03 Dec 2006 18:05 GMT

Can I unplug the one plug that keeps the annoying red light on?? Thanks
again Ian:)

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shiden_kai - 03 Dec 2006 21:55 GMT

:) :) wrote:

> Can I unplug the one plug that keeps the annoying red light on??
> Thanks again Ian:)

Yes, feel free to do that.

Ian

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:) :) - 04 Dec 2006 05:57 GMT

Thats what Im going to do! Thanks:)

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Andy & Carol - 03 Dec 2006 20:18 GMT

Did you change tire sizes on rear or front, something that might change
the reference in the ABS system?

> The 2 lights together(1 showing an exclamation mark and the other
> showing brake) turned on and wont turn off?? If I turn truck off and
> restart and drive it takes it a few minutes before it pops back on. Ive
> checked emergency brake and its not the switch sticking and the brake
> light switch behind the pedal is not sticking and fluid is full. Any
> ideas?? Thanks:)Nick

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:) :) - 04 Dec 2006 05:57 GMT

Hello:) Same size tires as it came with from the factory. Thanks for
the thought!! :)

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