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Thread: Unknown VIN, manufacturer enhanced OBDII parameters won't load, WTF?

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    Default Unknown VIN, manufacturer enhanced OBDII parameters won't load, WTF?

    This is what I get when I try to run the scan tool so I can datalog and get my tune on. You can see my other thread for my tune tool woes. It's taken a good 4 hours to get this far! All the PIDs are X'd out. Why doesn't it recognize a Corvette VIN? I have absolutely no idea what to do here. I've searched my ass off to no avail. Leave it to me to have the weird issues or suck at search.
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    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

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    Joe (Moderator) joecar's Avatar
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    I'm assuming the 2 issues aren't related, but it's on the same car (04 Corvette Z06) and they're both preventing me from deviating from the stock tune.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

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    Joe (Moderator) joecar's Avatar
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    What does the scantool say the VIN is...?

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    Scan tool displays the correct VIN that is displayed in the dialog box pic above.
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

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