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Reggordo

November 7th, 2018 2:12 PM

only the code 12 flashes

1993 chevy blazer s10, runs rough, changed distrib, ignition pack,plugs and wires. Even the ECM computer module, still runs terrrible. Stuttering and undrivable.

oldchevy

November 7th, 2018 2:50 PM

This might help.
GM OBD I Diagnostic Trouble Codes¦ Complaints Possible Causes,Corrections

kevinkpk

November 7th, 2018 3:25 PM

I was thinking code 12 is there with key on not running. How about the fuel filter, pump ect.?

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