1996 Chevrolet Blazer Logo
Posted on Jun 27, 2012
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What is engine code p440 - 1996 Chevrolet Blazer

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Hector L. Morales

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  • Chevrolet Master 649 Answers
  • Posted on Jun 27, 2012
Hector L. Morales
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This code is for an evap system large leak. Could be cause by something as simple as a gas cap or by a bit more complex stuck open vent solenoid. Make sure your gas cap o-ring isnt cracked(dry rotted) if it is replace it also make sure it is on tight. Here is some more info I found on the web. http://repairpal.com/OBD-II-Code-P0440

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