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2014 Silverado shudder at low speeds

Gordon1112
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Gordon1112 New Member

Gordon1112

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My 2014 Silverado while going slow has a bit of a shudder but does not do it in manual shift mode and I also had the transmission rebuilt 21000 miles ago. Any idea what could be wrong? Thanks

ic3man5 Enthusiast

ic3man5

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Manual Shift mode usually disables AFM (V4 mode) if not in 6th gear. If that is your difference do a basic tune-up and then check engine mounts. There are TSBs out there to shim the mounts and updated engine mount parts to help fix this issue also.

 

Vacuum leaks have caused negative fuel trims (STFT and LTFT) and shutters for me at low RPM and high load.

Edited by ic3man5

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