This is in my '86 1/2T Burb. I was going down the road in trafic, about 25MPH, and it just felt like the truck just shifted into nutrall. I have NO power to the wheels @ all in any gear, but park still holds the truck in place. I know NOTHING about auto tranies, but my buddy said that he thinks it's the pump. Any one have any ideas? I don't need this tranie enough to pay a shop to fix it (I'm thinking the truck is parts now ) but if all it is is somthing I (with the help of my buddy) could do my self............. I just might fix it and drive it agan. PS: this tranie was shifting soft (REAL SOFT) before this hapend.