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Chevy Blazer S-10

How do you get the diagnostic code to blink in your 94 S10 blazer?

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Wiki User
November 01, 2009 3:40AM

Just connect a paperclip to the top 2 ports on the far right side of the OBD scan port under the drivers side dash. Then turn the key forward 1 notch before starting. The first code should be 12 and it flashes 3 times, then simply right down what the next codes are. ALL CODES FLASH 3 TIMES.