estomax wrote:a cheap test would be to drain the transmission fluid out and see if chunks/metal comes out of there. That would confirm something screwed in the transmission. If the fluid comes out looking alright then just put fresh fluid in and you can say that wasn't the problem. There is a how-to here if you search my username.
If you want to do this, the Leaf doesn't actually have a transmission, it has a gearbox (fixed gear--no shifting). So the process you want done is to change the gearbox reduction oil, and check to see if there are metal bits in the oil.
Keep in mind that some small metal shavings are expected in the gearbox reduction oil (there's a collection magnet), but certainly not chunks or parts. If you can read a part number, you've got a problem.