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Reply To: 2016 Sierra Shifting Problem 6 speeed automatic

February 18, 2018 at 2:56 pm #437339
geojohn5
Participant

has anyone had any progress with this issue? I have a 2015 V6 and took it in for this issue after its first oil change. they said it was operating normally. I don’t want to chip it and void its warranty but I can’t stand it.

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