I have a 2002 4x4 F250 (V-8) with automatic transmission that just started shifting hard. Whether just going from park to drive or during upshifts, it jerks into the next range. This happend for one day last year and then stopped. Now it has happened again and has been for a few days. It reminds me of some older vehicles that shifted bad when vacuum lines went bad. Before I take it to the dealer for warranty service (where they will want to keep it for a day to look at it, and longer if there is a significant issue), has anyone else experienced this, and what was the problem? If not, any thoughts on what is wrong? I'll take it to the dealer, but it is such a pain in the rear, since I need my truck, and the dealer won't give me a loaner, since I declined one of the finance options (I think it was credit insurance, or something else I didn't want or need).