I have a 2002 runner with about 135,000 on it. Automatic transmission was serviced about 10K ago. I am having this issue where when I am creeping in heavy traffic, the runner transmission shudders a little bit. I add some pedal and it stops. Also, whenever I come to a stop after driving at highway speed and when I press on the the gas again to go, the engine sometimes revs and the tranny clunks hard and off I go. If I manually downshift, this doesn't happen, and also it doesn't happen everytime I stop. Thanks for a reply.