a week late but i forgot about this thread. i swapped my tires front to rear/rear to front, the problem is 90% gone. when i took the tire off that i was told had a flat spot, upon personal inspection it does have a flat spot. on the rear tho its not bad at all. i was informed i have a friend with a firebird that has a tuner, so im gonna call him next week and see if he can check out my pcm. also happened to run into the guy who bought the car new, gave to his son, son hit a speedbump/pothole/something and ripped the oil pan off and continued to drive the car, killing the engine. he said they swapped the engine from a regal gs(50k miles on it i think he said) and a brand new not reman trans from GM (something about the pan got damaged as well and ran out of fluid). his son sold the car to my buddy and i bought it from him.. so now at least i have some history on the car.