I bought an 04 GP in mid-2008 and it has been a fine machine but I have been noticing some hesitation and shifting irregularities. I had new plugs and wires put in recently and ran a tank of 93 octane and seemed to help a lot with the hesitation, then I had the transmission fluid flushed and replaced. About six months ago after sitting at a stop light and starting up again the car shifted hard, almost like a broken motor mount, real jerky but road smoothly. After cutting the car off and immediately cranking it back up and driving around a parking lot it didn't do this until very recently (about 6 months) after having the trans fluid replaced it did similar stuff for a day or so and now it seems to be smoothing itself out just fine. Sorry for the long thread, thanks for any insight.
