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BrianWilcox · 12-12-2017, 06:34 PM

On my 2017 SS, I had a shudder and RPM shift up 100-200 during highway steady cruise.

Dealer replaced ALL tranny fluid (power flush) with a new viscosity fluid per GM bulletin.
It worked.

12-12-2017, 06:34 PM	#8
BrianWilcox Drives: 2017 2SS Join Date: Jun 2016 Location: Dallas, TX Posts: 5	Shudder during cruise at highway speeds fix for A8 On my 2017 SS, I had a shudder and RPM shift up 100-200 during highway steady cruise. Dealer replaced ALL tranny fluid (power flush) with a new viscosity fluid per GM bulletin. It worked.