So I recently replaced my front brake pads. I have a squealing noise, so that was the first thing I checked. The brakes were worn out, but not metal to metal. Put the new pads on, rode a bit, and the noise returned. So I checked the back brakes. The arrows weren't even close to lining up, but I disassembled them anyway. There was some mud build up in the caliper, but the pads are practically still new. Cleaned up things and re-assembled. Noise is still there. I tried pulling the parking brake slightly while I heard the noise - the parking brake did not make the noise go away when I pulled the lever. So now i'm pretty sure the noise is not brake related, even though it sounds like brake squealing.
Has anyone else had this problem? It's pretty annoying - high pitched squeal that is persistent. It is most noticeable when moving at low speeds, or like when I'm slowing down to pull off the road. I haven't noticed excessive mud and grass around the axles or anything else like that. What else should I check???