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Why do you get code P0446 after you changed fuel pump on your 1998 GMC Sierra 5.7L?

Updated: 10/22/2022

Wiki User

∙ 16y ago

Best Answer

P0446 - The PCM has detected that a malfunction exists in the electrical circuit for the Vent control in the Evaporative emission control system Could be bad gas cap, vent valve, filler neck, cat converter try the gas cap and erase codes by unhooking pos + neg battery cables for a few minutes. Also check to make sure the hoses from the vent valve are not kinked in any way.

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∙ 16y ago

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Q: Why do you get code P0446 after you changed fuel pump on your 1998 GMC Sierra 5.7L?

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Why do you get code P0446 after you changed fuel pump on your 1998 GMC Sierra 5.7L?

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