Question about Chevrolet Silverado 1500

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I have a 2002 Chevy Silverado 1500 that recently had the "service engine soon" light come on. Almost right after that the engine started over-revving or hesitating whenever I gave it gas. I took it to Autozone and they gave me codes P0452, P0332, and P1639. Since 2 of these were related to fuel pressure, I changed the fuel filter and that seemed to alleviate, but not correct the problem, plus my light is still on. I am still running the same tank of gas, so could the problem be that I have bad fuel?

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I don't believe the check engine light would come on for the quality of the fuel....The fuel pump may also be giving a problem....Have the pressure checked at your cade centre....The air flow censor may be defective and cause similar problems....Regard Johngee

Posted on Oct 07, 2010

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I would take it back to Autozone and have it rescanned now that you changed the fuel filter.
The fuel pressure regulator may be at fault off the top of my head.
Try some fuel injector cleaner, too, if you suspect a fuel injector is plugged up.

Posted on Oct 07, 2010

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