2003 gmc yukon xl. truck shut off at 35 to 40 mileages an hour, brake light, abs and 4 wheel drive service came on the dash board. its really dangerous due to i wasn't able to control the vehicle. it was very scary. i could it kill someone, fortunately no cars or people around me. i took it to a mechanic, so i drive it one more time. but it did the same thing all over again. i'm planning on towing it to the dealership. i hope hey can help me figure out what's wrong with it. *tr