Warning problems of the 2020 Chevrolet Equinox

All wheel drive system - 3/20/23 I was on a county maintained dirt road where adjacent property owner had put fencing, tires, & other trash in the road to stop public use. As I had all wheel drive I went up on a 3' +/- side berm to get around. When the front end was approximately at the top, car started to slip & rear passenger tire "tried" to correct slip & car switched into low without my touching gear shift (I looked). From having a 2005 Equinox with awd, I knew this was awd going into action. When car did not change drive wheels like my 2005, I let off on the gas; turned nose downhill, slide/roll down hill. At bottom, I applied gas & car was still in low - it shouldn't have been with the emergency over. It stayed in low even as I applied more gas. I stopped car, put it in park; waited 2 +/- minutes for a reset. When I accelerated again, it was still in low. I put it into park & turn it off. Only after 2 +/- minutes off did car finally automatically switch gears as I accelerated. As I had 60,000 miles on the car & was advised by victorville chevy to have transmission service & did at diamond chevy, san bernardino as victorville chevy would not even write up a work order after the "electronic check" device inserted into car failed to note a problem sitting in the parking lot. After "the check" at vv, I made an appointment at diamond chevy in san bernardino. This car while having nothing on the carfax had a broken rear bumper cover which was "repair" after I reported it just after purchase 5/21. Bumper then, didn't hold when I backed into wire gate. At the very least, styrofoam, was collapsed/broken in the prior to purchase accident and not repaired when the bumper cover was glued & painted. I was told my car was "safe" after the bumper "repair. " my guess that a more than 3 mph rear collision would total the car. That is not safe in my opinion. Please note these were not the only two problems. My opinion is that it is a software problem.