Tech 2 able to identify previous tunes

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BlackBearPerf

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I came across this and was curious if anyone has been affected or if there’s any truth considering I have a black bear tune.

http://sandyblogs.com/techlink/?p=4248
We use every effort to ensure that there is no trace of the tune using GM's current method of tune identification. To date, there haven't been any issues with warranty on these trucks.
 
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Mighty Hd

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I have had mine in once or twice for warranty work and it never came up. Granted, I did not have major engine or transmission work performed either.I was just curious if there have been any issues.
 
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