Gurgling / srinding noise when braking

I am hearing a strange noise when I am braking or starting to drive, but it is only coming when I am going very slow (under 15kmh) As soon as I speed up a bit it is fine. My fuel pump is going, but I don"t think it is related to the noise at all. The noise seems to be coming from the front passenger side, but it's hard to tell for sure. I have a 4.3L 99 Blazer.
Any ideas?

A possibility is brakes/rotor. Check your brakes to see if your wear bar is touching the rotor - indicating it's time to replace. Worse yet, your brakes may be completely gone and you're wearing metal to rotor metal - not good. Rotors are pretty cheap.

While there are certainly lots of other things that can cause these noises, brakes would seem the most important to check out right away.

LOL