brake light flashes on 1991 Chevrolet Suburban 2500

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

by in West Suffield, CT on October 19, 2010
1 answer 1 comment
ANSWER by on October 19, 2010
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:
COMMENT by on October 20, 2010
its a non abs truck
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