1996 Tacoma V6 Automatic
I'm not a car person, but so keep that in mind. I often get a groaning sound when braking downhill, beginning at the last few seconds of braking and lasting until the wheels stop. It's pretty loud and sounds like it's something large causing it, as if an axle is about to break. It feels like it must be something quite large to cause such a deep, reverberating groaning noise, if that makes sense. More than just a loose wheel, for example. I first noticed it 7 months ago, and only lately has it started up again. It happens both in forward and reverse, as long as it's moving downhill. It may have happened uphill or on level ground, but not that I can remember.
What should I look at? Let me know if I can provide more info.