BadLuck

I'm having the same exact problem!!!! I'll start with the flush and re-calibration. Since it happens on occasion it doesn't seem like a hardware issue.

I'm curious I have an 07 and mine is doing the same thing (the bump). However I'm not under warranty so off hand does any one know how much they paid to get this fixed... the TSB I found was 07-5-2 but I'm not sure. Thanks for the future help!