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Thread: EROD LS3 and California emissions. (unsupported monitors?)

  1. #1
    Potential Tuner
    Join Date
    Oct 2012
    Posts
    4

    EROD LS3 and California emissions. (unsupported monitors?)

    For some reason my CARB legal EROD ECM for my LS3 doesn't have misfire or catalyst monitors enabled (they show as "unsupported"), I can't pass emissions without these monitors working. Is there a way to enable them in the ECM? The "not completed" monitor has since been fixed.

    2019-06-10_02-03-26 by Jimmy Casey Photography, on Flickr

  2. #2
    Advanced Tuner
    Join Date
    Oct 2013
    Posts
    550
    Some CPP (formerly GMPP) LS3 E67 ECMs have the OBD-II emissions enabled, but some do not. Yours quite obviously does not.

    Try contacting your local CPP dealer for assistance. Either the wrong controller was ordered, or the wrong controller was shipped - either way you need a different ECM to satisfy your local emissions requirements.

  3. #3
    Potential Tuner
    Join Date
    Oct 2012
    Posts
    4
    Update on this, GM provided me with the wrong ECM in the crate engine. It had to sit at the dealership for 5 months while GM reflashed it with the proper OS.

    California sucks.