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Sometimes simply disconnecting the battery will clear codes, or after cycling through the start mode so many times will do it .You can also plug an O.B.D. unit into your E.M.C. as a code reader and clear codes.

Pull the fuse for the ecm.

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โˆ™ 2015-07-16 18:24:10
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Q: How do you reset the computer to clear codes for the check engine light on a 1989 S-10?
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