What is your question?
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What is your question?
My buick is having a misfire problem in cylender 4. I have changed the spark plugs and wires twice but the codes P0304, P0304 pd, and P0404 are now coming up and my check engine light came back on. Do anyone know how to fix this issue?
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This may be way too late to answer but may be worth it for the next person. I need to change the ignition module on mine. The code read misfire and that a coil needed replacing but when the new coil did not work it was discovered that the module was the issue.