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I have changed the ecm, both relays and mass airflow sensor And still I get code 33 what am I missing? I am a first time Vette owner getting frustrated.
 

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I have changed the ecm, both relays and mass airflow sensor And still I get code 33 what am I missing? I am a first time Vette owner getting frustrated.
I assume you disconnected the battery + terminal to reset the codes...??
 
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