Don't know about wiggling knobs, but my shifter assembly started making a very annoying sympathetic vibration during acceleration. The dealer replaced the entire assembly inside the tunnel under warranty.
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2013 Cadillac ATS Performance, 3.6L
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Formerly:
2012 GT Automatic, Kona Blue w/Stone interior
The usual exhaust mods, JLT CAI, Brenspeed tune, BMR LCAs
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