Brakes making loud squeaky noise when the brake is applied while driving my Cadi2018XT5

Hello, brake noise is always due to the dynamics of the mating surfaces. Brake pads and brake rotors -- plus -- how the brake pads fit in the mount of caliper and bracket. If there is any looseness that causes as resonation when the brakes are applied, you get noise. If the brake rotor surface has not been properly refinished, or has "hot spots" or other concerns, you get noise. If the brake pads are not original equipment Cadillac brake pads --- again, more likely to cause noise. It's all about doing it all, correctly, at the same time. You replace the brake pads, not Cadillac pads - variable number one. You don't inspect the rotors closely, variable number two. The rotors have a lip on the edge - variable number three. The rotors are not resurfaced - variable number four. The anti-rattle clips are not properly installed - variable number five. And on, and on. This isn't complex, but it does require proper and exact maintenance and repair to prevent or reduce noise. www.repairpal.com/repair-shops