About 4000 miles ago I had my brakes replaced on my 2007 Pontiac Vibe. I had both front pads and rotors, as well as, the driver side caliper replaced (as it had seized up). Everything was fine and dandy for about one month.
A month later, I heard a rather loud, rotational, metal to metal grinding noise. This noise only occurred when I was braking lightly and coming to a slow stop.
I took the car back to the shop where I had the work done. They looked it over today and said everything looked fine. No problems. They took a look at my rear drums as well and said they look almost new.
The noise isn't made when braking hard. The noise doesn't always happen at every slow stop. Sometimes it does, sometimes it doesn't. I cannot always draw the noise out by braking slowly. I can feel it in the brake pedal when it happens. I do not have ABS in my car. The rotors do not feel warped when braking, i.e.- there is no shake or shimmy in the steering wheel or other noise. The calipers do not appear to be seized up, as there isn't an absurd amount of dust on my wheels.
I cannot figure it out.
I thought maybe something had wedged up in the brake area, a rock or tar, and it was grinding into the rotor. I washed that area out diligently at the car wash, but i still have the problem.
should i get a second opinion?