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2015 Sierra throttle response


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Posted

I have a 2015 Sierra that I purchased last weekend. It has the 5.3 with the 3.42 gears. I have noticed that it's a little hesitant at first when I floor it before it goes to full throttle. Is that normal?

 

It was a demo/loaner with 2400 miles when I bought it. Do I need to do anything?

Posted

Do I need to reset the ECM by pulling the negative cable to have it learn how I drive or will it learn on its own?

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