2002 Escalade EXT

While driving my escalade whether I am on clean dry pavement or on wet, the traction active comes on my dash and it stalls out the vehicle and will not continue driving. Its like someone put it in netural and reves up the engine. I have takin it to 3 chevrolet dealers and all 3 of them have no idea what is wrong. They say that no codes show up. My friend told me that he thinks it is a wheel sensor? Do you know what could be wrong with it? It scares me because sometimes it will stall out while I’m in the middle of an intersection and one of these days I am going to get broadsided. Please assist, thank you.