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  1. Mitch564

    P0440 Code, out of ideas

    I have a 1998 k1500 5.7 vortec. I had the P0440 evap code occur a few months ago and Ive been trying to fix it ofcourse. So far nothing has worked and it comes back on within a couple days of clearing the code. All Ive Replaced: Gas cap Evap solenoid Purge valve Fuel pump Precat O2 sensors...
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