mistzI have the fix. Read on… probably your same experiences!!
Just got my 2023 Escalade and was going NUTS. When my car was delivered, super savvy sales guy told me what to use and said the book was wrong. But, what he told me was (I think) just like the book: minimum 64GB FAT-EX, v30. So, I bought a big fat 256GB card for $27 and it wouldn’t work. Tried formatting it differently, tried partitioning it. No avail. I reached out to him (sales guy) and he said it would only take 32 GB Class 10 (not 64GB, not V30). Since this card was so cheap ($8) , I ordered one on Amazon. https://a.co/d/hov74z7
It worked!!! Right out the box, it worked. All those hours I wasted formatting a large card…waste of my time. Just print the manual correctly!!!! OR BETTER YET, include one with the car!!! It’s a few bucks for crying out loud.