On the trip to Watkins Glen, I detected the dreaded trans shudder. I thought it was only barely noticeable as I drove the 15 miles to the nearest dealership I trust. I mentioned the TSB #16-NA-175 when I made the appointment. I was hoping they would believe me.
Their tech felt it to, did the flush and filter, and it was noticeably better when I got it back.
Thumbs up to David Chevrolet Buick in Niagara Falls, NY!
Another note, I was able to get another banner made. But she used the wrong vinyl, a darker metallic grey...and we LIKE it! (At least for now.

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