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Posted on Apr 27, 2011
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My 2004 Silverado HD duramax has a code co86B cant find out what it is

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Jonah Oneal

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  • Chevrolet Master 14,092 Answers
  • Posted on Apr 27, 2011
Jonah Oneal
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CO CO86B IS ABS WARNING LAMP CIRCUIT MALFUNCTION.

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