[Teekypt]

Yes, this sounds very familiar! It happened, exactly, to my 03Gt.

About a year ago, mine kept "bucking" around 2000rpm. It started out of no where. One minute it was fine, the next it was "bucking" violently. I took it to the dealer and they said that my 4th cylinder wasn't working. The fuel nozzle in the cylinder was clogged and because it could spray fuel in the chamber, no nuthin could ignite. The spark was happenin, but no combustion.

So, they cleaned the nozzle, and haven't had a problem since.

And, yes, my engine light came on. Had to drive it on the back roads, cuz there was no way it could've made it on the freeway. Once I got it home, they sent a tow.