2021 Chevrolet Malibu Engine Problems

My 2021 Chevy Malibu's transmission is shredding. The car does not go into D right away, it acts like the engine is completely disengaged. If I go from R to D several times, the engine sometimes revs very high when I step on the gas and then lurches the car forward a few feet. Sometimes, when I try to get the car into first gear, the car will completely shut down with the vehicle in D, and I have to put it in P and restart it. Other times, I can put it in different gears a few times until R engages very sharply (the whole vehicle moves), and then it will engage into D just as sharp. My check engine light will come on and go off, although it never did before this problem started, and whenever it comes on, the car will stop working whenever I stop the vehicle and try to go again (i.e. red lights). I only have one car and am forced to continue to drive this vehicle while I wait on repairs. I have two kids and I am terrified that my transmission is going to completely give out while we're driving, or the engine is going to start shutting down while the vehicle is in motion! The dealership told me that two other Malibus were in with the same exact issue within days of each other. A GM inspector confirmed the transmission is shredding. My friend had a Chevy Impala that did the exact same thing