According to the article MQE replaced M5U but was a revised transmission with changes. Probably didn't fix the issue but I have not yet had it happen to me.
Snippet from article - https://gmauthority.com/blog/2019/06/the-gm-8-speed-transmission-just-needs-to-go-away-asap/
"Following a litany of complaints, GM tried to “improve” the 8-speed in the 2019 Silverado and 2019 Sierra. In a press release, the automaker said it made “enhancements designed to improve shift quality, while also adding a new centrifugal pendulum absorber torque converter” to improve smoothness. The new revised transmission was assigned RPO code MQE, replacing the M5U 8-speed unit on the half-ton Silverado and Sierra, but not (yet) on other GM products like full-size SUVs or mid-size pickups."