Tune issues

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dbkid0486

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I just purchased a used 2012 and I believe it had a tune of some sort but I don't know and neither does the dealer that I purchased from. I too have this same shift issue when I romp on the pedal. Is there a way to find out if you have a tune? I need to bring it to a tuning shop for this I Assume? Under normal driving it shifts fine but when under full throttle I get a shimmy from 1-2 or 2-3 can't fully tell. But after typing this I Wana say it's from 1-2 that I notice it and it's fine after that.
 

Bulletnjm

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I just purchased a used 2012 and I believe it had a tune of some sort but I don't know and neither does the dealer that I purchased from. I too have this same shift issue when I romp on the pedal. Is there a way to find out if you have a tune? I need to bring it to a tuning shop for this I Assume? Under normal driving it shifts fine but when under full throttle I get a shimmy from 1-2 or 2-3 can't fully tell. But after typing this I Wana say it's from 1-2 that I notice it and it's fine after that.

Tell the dealer to reflash the truck to a stock tune
 
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