I am going to file chapter 7 in a couple weeks, before my vehicle payment is due. I am not reaffirming. Do I need to make the payment?

Do you want to keep the vehicle?  If you don't make a payment and there is enough time for them to repo it, they will.  But if you are not seriously in default now and plan on giving the car up later, then skip the payment if you have better things to use the money for, like foods, utilities, student loans, and health care.