Mechanics

BRAKE LIGHT

1992 GMC Sierra

Brakes problem
1992 GMC Sierra V8 Four Wheel Drive Manual 170000 miles

The dash brake light comes on at different intervals sometimes quick some times 5 to 10 min. Why would it be on? The proportioning valve was ceeping so I replaced the it with a used one. It still ceeps but every thing is tight. The brakes are solid, the problem started when I replaced the rear differencial with a used one from a 97.
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Jeepmanadh
June 6, 2009.



The switch in the MC may be bad, any seeping is not a good thing. Brake connections are double inverted flare and should not leak, unless crossthreaded or bad flare.

Mmprince4000
Jun 6, 2009.