E Brake ?
Thanks,
Brandon
Basically there's a black cable with a loop at the end of it, and a big spring covers the last 6" of the cable. That cable slips through a bracket on the rear end, and little prongs hold the cable in place. That loop on the end slips over the hook on the eBrake.
Not sure that would cause a rattle. Check your spare tire and make sure it is not loose - although it is on the pass side noise does travel and play tricks on the mind.

