unknown, Is all I know that I was checking the code on my truck and left truck on all night went out to start truck and battery was dead I got a jump from a friend and it started fine. I let it run for @20-30 minutes then I and my wife went to Realo drug store about 3/4 of a mile from home to get her meds. We pulled up and waiting and got the meds payed for and my wife said there is smoke coming from under the hood. The truck stopped running and I tried to start it back and it did not start. Started smoking more and more I told my wife to get out of the truck and she did the pharmacist came out and help push the truck away from the store. Started flaming up and I drove it to a safe place and finally got out of the truck wife was ok but I had smoke halation and had to go on rescue squad to ER they said along with smoke halation I had a burnt nose ,forehead and burnt throat. Please check about this. Thank you