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    2015 LML CP4 questions

    I just put in a cp3 conversion in a 11 that I had put a new cp4 in 4 years/130k ago. I will likely never reccomend replacing with cp4 again. I'm seeing them failing from 120-150k the most. Sent from my SM-G889A using Tapatalk
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    LML cp3 conversion troubles

    The return regulator is what it was. Thanks a lot y'all. My day got a lot brighter when that got fixed. [emoji123][emoji106] Sent from my SM-G889A using Tapatalk
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    LML cp3 conversion troubles

    I think il change it. Sent from my SM-G889A using Tapatalk
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    LML cp3 conversion troubles

    https://www.duramaxforum.com/threads/lml-cp3-conversion-defueling-problem.718721/ This is spot on exactly what the truck is doing. Should I get more pushy with the tuner? Sent from my SM-G889A using Tapatalk
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    LML cp3 conversion troubles

    Reman lbz. I still have the green sensor from the old pump plugged in and the plug with yellow and black wires in the lbz fpr. Sent from my SM-G889A using Tapatalk
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    LML cp3 conversion troubles

    I double checked with the tuner ... they seemed confident the tuning was correct. It's tough finding good delete tuners any more.. Sent from my SM-G889A using Tapatalk
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    LML cp3 conversion troubles

    The rails I didnt remove, the lines i did. The commanded and desired is together very close the entire time! Sent from my SM-G889A using Tapatalk
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    LML cp3 conversion troubles

    So I know I'm still considered a new guy but I do have some street cred on duramax forums if yall hate on me. I have done a couple of these conversions with little to no trouble and some not even having to be retuned to run well. I have been putting in stock lbz pumps. This is a 2016 cab and...
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    ECM VATS Relearn:

    Trying to load a tune to adjust for bigger injectors .kept getting no data received .after ten or so tries the truck will not turn over.security light comes on when i lock the doors with the lock button and close them.remote does not work..now it says em is in an unknown state when i try to read...
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    ECM VATS Relearn:

    My truck is an 04.ecm is locked.v2 won't pick it up.i tried about ten times to get the v2 to read the computer and bam it won't turn over.what could be the problem?