I have seen this mentioned in the past, but I can't seem to find it. On the way home from the zoo, just after exiting the expressway we coasted down a hill. The truck stalled. It starts up on the bottom. This is the third time it has happened. Only after a trip on the expressway for more than 20 min. I drive the hill all the time, nothing ever happens. All the inside guages work and are good. no warning signs. I try to accelerate and it chokes out. Please help or attach me to that link.