It's a 97 buick riviera, it's still bone stock, i'm gonna be adding some mods soon. But I haven't looked at the pulley yet to see if it's moving, i'll have to look in the morning. The sc belt is coming off, and so is the timing belt, but the timing belt is rubbing against this metal piece causing it to squeak. 181xxx on the chassis, and the engine was replaced about 1.5k-2k miles ago. The same series 2, 3800 engine was put in it.