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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: NCali on January 28, 2018, 02:20:31 pm

Title: computer/check engine light
Post by: NCali on January 28, 2018, 02:20:31 pm
when you turn the ignition switch to the on position the check engine light should flash twice I think.
   Mine sometimes does not come on at all. when that happens , I pull the ecm fuses out and the crank fuse. I put the same fuses back in and it will work.

  I get no codes when checking for them

any Ideas?