last night as i was driving my expy i heard a loud (almost like a pop) come from the passenger side of the truck i pulled over cuz i thought i might of blown a tire but got out and saw nothing, so i proceeded with my day and today as i was driving her somebody pulled up next to me and said yur leaking something bad so i pulled over and noticed i was leaking tranny fluid pretty damn bad, does anybody have an idea of what could of "popped" from the tranny to make it leak pretty bad? the leak is coming from the passenger side of the truck, btw she has the 5.4 liter! please help if possible!!!