1999 Chevrolet Venture Logo

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Posted on Oct 18, 2008
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Check engine light

What does the check engine light "po443" mean on a 1999 chevy venture van?

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  • Expert 55 Answers
  • Posted on Oct 18, 2008
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Joined: Oct 18, 2008
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I believe this is an evaporative system leak such as a loose gas cap or leak in an evaporative system line.

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hello , that is not fare to buy a new van because a small problem like that , i will try to help you , if the motor didn't make any noise when you try to start it , so you can check on the starter ( marsh ) , if it is ok so you can check on your denamo , but first be sure that the battery is good , and thank you for asking fixya.
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