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1998 Chevrolet Express 1500 Question: I have a dtc p0303. The spark plugs and wires has been changed what next?



, 5.7L V8, Chicago, IL, September 28, 2012, 18:58

service engine light still remains on

2 Answers
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  • Answer #1

    September 28, 2012, 22:57

    check the compression on that cylinder and let me know what u find.

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  • Answer #2

    September 29, 2012, 07:11

    After repair the computer will have to be reset to turn off SEL. If you have done this and still have the same code may have an injector problem. Or as answer 1 said compression low.

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