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ttamsedroc

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  1. ttamsedroc
    Hello all, first time here and just bought a 2024 sierra 1500 pro with 2.7. im having similar tranny stuff. after truck has been sitting over night or when im at work during the day, when i start to drive, it shifts super hard when it goes from 2nd down to 1st. it only does this until everything gets to full operating time, then its fine. My garage is at 45 degrees, so its not outside at zero degrees. i got the truck with 12 miles and now has 700. any help would be nice. thanks-----matt
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