[LittleHoov]

I was actually under the impression that the module was under the hood, i thought it was the electric "box" that all the brake lines run into from the MC and then out of.

The back brakes not working thing doesnt quite make sense, unless there has been some sort of mechanical failure in the modulator as opposed to an electronic one. The brakes should still work well enough, or i would think so anyway.

You should be able to confirm the back brakes working by jacking up a rear wheel and applying the brakes with the car running, see if they clamp down. You could also check the rear pads, which could simply be thin or practically non existant.

But Im assuming they hooked it up to a scanner to tell you that information, so it could very likely be correct. Its not a cheap part new at all, used might be a better bet. You might want to confirm where its located first though, i really thought it was under the hood.