When driving and speed reached 40 mph the car vibrates, when speed reached 60 mph it vibrates again. When decelerating after driving for a little while, and speed reached 10 mph (while decelerating) the car vibrates violently, then shuts off. When I restart the engine it runs noisily while still in park, then shuts off again when put in gear. I have to wait a minute or two before I start the car and put it in gear and it runs, until I decelerate again and the cycle starts over. I have had my head gasket repaired/replace by jay Pontiac in columbus Georgia at my expense because I receive the recall notice on the head gasket leak several years after the recall campaign was over. I have had my alternator repaired/replaced, transmission problems, etc. The dealer never sees any problems when he diagnoses my car on his computer & everytime he suggests what the problem is and I go broke paying to get it fixed, the problem remains. I am very fed up with Pontiac & GM & their dealers/service people who seem to know nothing of their products' failure. I need to know what the problem is with my car so I can get it fixed. I am also seeking to purchase a new vehicle and from the horrible experience I've been having with Pontiac & GM I am staying away from their products and advising everyone I know to stay away from them. I am at the point where the only automobile product I am interested in is foreign made. I understand you get what you pay for, but I don't understand a product having problems even the manufacturer can't figure out.

- Douglasville, GA, USA