I have a 2007 Dodge Ram 1500. I recently bought the truck in Dec and on severl occasions the truck does not respond when in reverse. It's like this, I put the truck in reverse when I want to leave my house, then for no reason the truck doe not respong. I don't know why, its a new truck. I will give it gas and nothing its like if the truck was in neutral. Help or should I just take it to the dealership???