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1991 Chevrolet Suburban 2500 Question: brake light flashes



mudfrog, 5.7L V8, West Suffield, CT, October 19, 2010, 19:14

brake light flashes 3 short and 1 long what does this mean

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  • Answer #1

    October 19, 2010, 20:24

    Sounds like your ABS system has a fault code stored in memory. A code 1 is a problem with the ABS ECU thus the 1flash.
    A code 3 is an open dump valve code, thus the 3 flashes.

    Best to see a shop that knows how to deal with an ABS problem:

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  • Reply

    Visitor, October 20, 2010, 13:54

    its a non abs truck

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