One of my sons owns a 2016…
One of my sons owns a 2016 Silverado and was having issues with his transmission. Having owned several Silverados and GMC Sierras over the years, I had dealt with this issue as well. I normally didn’t have any issues until the mileage was 100k or higher but the fix was the same. I would never and will never have a transmission flushed. As stated in the article, it tends to loosen debris which then gets worked back into the components of the transmission. Instead, I would drain the fluid, clean the transmission pan and replace the filter. Once filled to the proper level, the transmission worked like a champ. This is my experience with Chevy and GMC and others may have had different experiences all together.