Hello, I've been trying to get my car to start and it will not. It's very cold, around 0 degrees F. So far this winter it has been starting just fine, but today it just will not start. The battery is not dead, all of the lights and the radio will turn on fine. But when I try to start it, I can hear (what I'm guessing is) the starter solenoid. It's really slow making a "chunk.......chunk......chunk....." sound fairly slowly. I've even tried to jump start it with my brothers car and it does the exact same thing. I'm guessing this is also not the neutral safety switch problem either due to the face that I can hear the solenoid. Please help? I'm almost to the point of taking a heat gun out there to warm the battery and starter. Any suggestions would be much appreciated!