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Diagnostic Code Check


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dthomsen
06-08-2008, 01:18 PM
Need to know what a number four code on the diagnostics is for a 1991 chevy s-10 Blazer?
Blue Bowtie
06-08-2008, 01:49 PM
Welcome Aboard!

1980-½ - 1995 GM ECM error codes are two-digit. Try scanning again and interpreting the two-digit code.
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