This has happened at least a half dozen times since the truck was purchased. I will come to a stop and all of a sudden it will feel like somebody has rear ended me at a low speed. I will look behind me but notice that nobody is there. The transmission seems to buck or jolt like this only after I have come to a complete stop. Truck is an 05' extended cab chev duramax 2500 w/ allison and 1500 miles on truck, completely stock.

Have the dealer clear and reset the TAPs. Someone at the factory forgot to do it. It will take forever to relearn on its own.
mike

thanks Mike. What is the TAP?