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Thread: LY6 swap on Monte Carlo wont start

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  1. April 2nd, 2012 #1
    blazinblue
    blazinblue is offline
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    Oct 2007
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    93

    Default LY6 swap on Monte Carlo wont start

    We swapped in a 6.0 LY6 from a 2008 2500 Suburban into a monte carlo using painless wiring harness. Motor turns but does not start. We disabled VATS. It is a running a 2008 computer 5.3 LMG. PCM is using service #12612384. Heres is the tune..

    It does have crank rpm cam signal and we also have spark. MAP sensor is from stock LS3.


    Any ideas?
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