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2016 sierra engine code p0073

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  1. Duramax Fifth Generation: 2011-2016 (LML)
    I just bought a 2016 Sierra 2500HD. Engine light came on and it is a P0073. I replaced the ambient air sensor behind the grill and the code came back on right away. Does anyone have experience with this and are there any other solutions to fix the issue?
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