It is the same chime I've heard before when a bulb was out. The left rear tail light assembly is loose and bounces around a little bit, so that's probably where the problem is. I'll check it out.Soft light out, so short that even the dash warning light won't light up.
Very common on 3rd Gens.
If all bulbs are proven good the most likely one of the boards in the tail lights is bad.