I just purchased a 2004 Saturn Vue AWD V6, automatic Transmission. After I drive any distance and turn the vehicle off, I am hearing a buzzing noise coming from under the hood. It lasts anywhere between a few seconds and a minute. The car drives perfect and shifts very smooth. There is 128, XXX miles on it, however, it drives fantastic.
What could this buzzing be caused by, and is it something I need to be worried about? Any help would be much appreciated! Thanks so much!