LB7: Locked ECM help

Jpbrienp

Jpbrienp

New member
Feb 6, 2013
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NC
I'm trying to flash a new tune over an existing tune on an lb7. I'm trying to full flash and its telling me that the key is invalid. Any ideas. It looks like the previous tuner locked the tune?
 
Cknight199

Cknight199

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Aug 23, 2012
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Salt Lake City, Utah
Jpbrienp said:
I'm trying to flash a new tune over an existing tune on an lb7. I'm trying to full flash and its telling me that the key is invalid. Any ideas. It looks like the previous tuner locked the tune?
Click to expand...

Are you using a new tune from SoCal? Whatever tuner locked it, you can ask him to take it off and unlock it, most tuners are pretty cool with it and will just ask for the tune back, but some won't unlock it and then you've got to get a new ECM.
Like I said a tech 2 won't unlock it...

You could also try this. In the underhood fuse block the bottom right has 3 fuses that are radio related. Pull those and try flashing it then. Make sure to try everything via efi
 
Jpbrienp

Jpbrienp

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Feb 6, 2013
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NC
It says invalid key. Thanks for the options. I think it's going to the dealer today to get flashed back stock.
 
quinton

quinton

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Nov 28, 2011
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Granbury Tx.
Jpbrienp said:
It says invalid key. Thanks for the options. I think it's going to the dealer today to get flashed back stock.
Click to expand...

Dealership won't fix it. I've been thru this whole process. Save your time and money and just send it to guy at SoCal. Or if you don't believe me call him. He will explain it to you.
 
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