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    You previously posted a message about the diagnostic trouble code P1400--cold start emissions reduction control system. My 09 2500 HD 6.0 gas has been having a very rough idle every morning and the ck engine light comes on. I check and then clear the code every evening and the process repeats itself the next day.

    I have gone over and over the intake system and cannot find anything wrong.

    Any suggestions? HELP!

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    hi i commented on your post on headgaskets for cadillac devilles 02' to be specific. if you didn't see it id really want to know what you think for a motor swap n what not
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