NHTSA Complaint #11455771 — 2017 CHEVROLET TAHOE

My wife usually drives the Tahoe for short day to day commuting to and from work and bringing kids to practice, but I needed it for work one day and upon trying to accelerate onto the highway I noticed the transmission had no power when accelerating. I took it to a Chevy dealer and they were unable to diagnose the problem due to it not displaying a check engine light nor were they able to guarantee they would be able to determine the problem if they kept it longer for further inspection. I made an appointment with a shop down the road and after an inspection and test drive, they were able to determine that gears 3 and 6 were shot on the transmission. and that the engine was at 100% load going 55 mph. After waiting 4 weeks for a transmission, when we went to pick up our vehicle, he had 2 other Tahoes in the shop (2016 and 2019 with 77,000 and 51000 miles respectively) both needing new transmissions and said he has had many Suburbans and Silverados with same problem around the same miles. Shame on Chevrolet.