I have a question about my NV 3500 Passenger van. I took it to for oil change and they said it needs a left front lower control arm. It is still under warranty bumper to bumper. They are saying that is a maintenance item and would not be covered. Does anyone know if that is correct? He kept telling me I had powertrain warranty when in fact my warranty is bumper to bumper for 5 years or 100,000 miles and I have not reached either.