Two problems related to transmission shudder have been reported for the 2017 GMC Sierra. The most recently reported issues are listed below.
While driving my GMC Sierra denali the transmission shudders really bad. I have a 2017 with just 13,200 miles on it. I was pulling my bass boat and the shurdder was so bad my dash was shaking and the steering wheel was also . I have had the fluid changed at the dealership and it shifted fine and did not shudder until it reached around 1000 miles after fluid change and it is doing it worse now than before. I took it to the dealer close to me and they informed me today they were going to do nothing and they told me to take it back to the dealer I bought it from! this is unacceptable! I understand from all I have been reading about this problem gm still is building and selling trucks with the 8 speed trans in them and still having problems. Really? I guess I will keep driving mine and I hope the transmission just comes apart then they will give me another transmission doing the same thing! just great gm!.
Harsh downshift intermittent between 20 and 30 mph. Binding/clunking at low speeds when downshifting into first or up shifting into 2. Transmission shudder when accelerating in first gear. Vehicle lunges forward intermittently at low speeds when shifting.