What is your question?
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What is your question?
the problem started when i forgot to tighten the gas tank cover
1 Reply
I would suspect you have a code P0455 - large evap leak, I don't see a code P0495. If you have a code P0455 stored in PCM of your 2002 Chevrolet Blazer and the code was set due to a loose gas cap the light should go off by itself after driving for a few days. The other option would be to clear the code using a code reader or scan tool.