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Thread: locked ECM

  1. #11
    Lifetime Member GMPX's Avatar
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    Apr 2003
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    13,148

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    Try again with the Try Alt Keys and High Speed 'on', low speed is a last resort but not really something you would want to do all the time as it's MUCH slower.
    Also, don't forget, if you have any aftermarket audio equipment like XM adaptors etc these can play havok on the vehicle communications data bus causing all sorts of errors, best to disable (or unplug them) when programming.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  2. #12
    Senior Member
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    Mar 2008
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    Working on things now!
    Mine2001 GMC 2500HD EC/LB, D/A. 4in MBRP exhaust, AFE Stage II w/Amsoil Ea air filter, ISSPRO boost/Pyro guages, PPE Boost Valve, EFI Live V2, Maximum OD Stage 2 Trans, Amsoil throughout, AirDog150, modded intake horn.

    540HP/1056TQ
    Dyno'd Danville Performance
    April 5th 2011

    Hers: 2006 GMC Envoy XL Denali, Flowmaster 40 with a bullet style resonator in the back, EFI Live with the help of JoeCar and other great members here.

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