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Thread: e38/t42 connecting issues

  1. #1
    Tuner in Training
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    e38/t42 connecting issues

    i have a 2008 l76 truck engine
    e38 ecu
    t42 controlling the 4l80e
    engine runs but cant seem to connect to hp tuners via obd2 port
    one min it will say detect protocal error, then it will say boot loader time out , ecu not found etc
    any help
    fully charged battery
    some of my other cars will connect instant and others wont
    took the e38 put in my dads 57 read it perfect, put dads in mine read perfect wtf lol
    mpv1 unit

  2. #2
    HP Tuners Support
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    Bill@HPTuners's Avatar
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    likely a wiring issue with the vehicle. Try reading the ecm via bench harness.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  3. #3
    Tuner in Training
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    Quote Originally Posted by Bill@HPTuners View Post
    likely a wiring issue with the vehicle. Try reading the ecm via bench harness.
    its a stand alone harness , checked checked and rechecked wiring

  4. #4
    HP Tuners Support
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    Bill@HPTuners's Avatar
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    well if the ecm reads in one vehicle but not the other, chances are its a wiring issue.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"