Remove the guide pins from the brake caliper.
Clean old grease and rust stains, if there are any, from the caliper guide pins and guide pin boots.Use a brake cleaner.
After applying the spray, wait a few minutes.
Lubricate guide pins with special brake grease.
If no new guide pins were supplied in a kit with the new brake calipers, use the old pins.
Treat the contact surfaces between the brake pads and the brake caliper bracket.Use anti-squeal paste.