Chevy Garage replaced rear brakes (heavy duty) on my 1996 series 2500 van. A year later they squeal when I apply brakes. Garage said it was just dust and cleaned them. Didn’t fix it. Took it back and they said the pad edges needed to be angled. Didn’t fix it. Now they say the pads could be slightly warped from use but this van gets used only a few times a week and never gets panic stops. What does cause brake squeal? Any suggestions?
Brake squeal is caused from the brake pads vibrating when they come in contact with the brake rotors. One thing to try is remove the brake pads and apply an anti-squeal compound to the backing plates of the brake pads and reinstall the brake pads.