Hi everyone. I have a 2005 frontier, 6 cylinder, 4x4 king cab with 80.5k miles. I took this baby on a road trip, and on the return drive, about 800 miles into the trip, I became stuck in traffic. Anyways, once it let up and I started accelerating, we felt a large "thump" as if someone rear ended us going like 3 mph but the thump came from under the hood. It literally shook the truck and immediately the check engine light came on. Thank god I was right by an exit. I pulled into a station, checked all the fluids and serpentine belt and everything was okay. Started the engine again, put it in reverse, then put it in drive, and the truck barely accelerated at all. I turned that baby off and got it towed to the dealership. Any ideas? I at first thought it was possibly the distributing cap or timing belt, but the Toyota dealership i bought it from said from what they can tell diagnostically it has something to do with the tranny... Kind of sucks, only had this truck for 2 weeks. Thank god it came with a warranty. Thanks for any feedback!