About five years ago i took the car into the dealership because passenger side door was leaking water. they said they installed a fan that will dry the passenger seat while the car is off. everything was fine up until a year ago, when the car started dying. i replaced the battery and the alturnater and the car seemed to be fine, unless i let the car sit for more than a day, then it would die. When i went back to the dealer and asked what they installed in my car they said they replaced a vent and gave me a reciept. Do you know any 03 impalas that have a fan that turns on while the car is off that drains the battery? Thanks for your help!