Yes all came with Brembo. Front are two piece design with an aluminum hat. The back are one piece design so you can use what you want. you can get what you want on the front but the two piece design are original and cut down on weight and you don't risk the rotors warping since they are only bolted to the aluminum hat. There are aftermarket ones that are cross drilled too. Rockauto is where I got my replacements. Pads were sourced from Autozone. Years back I bought brake pads for the Corvette I had and after 1992 they outlawed asbestos pads. The originals were from Australia (Girlock). Bought GM pads and when you opened the box there was the Girlock box with the pads. Those pads were outlawed due to asbestos. Bought a new set from GM and they ended up being the same manufacturer that supplies Autozone Duralast Gold. Been sold every since.
Good to know. I’m ordering a lot. Car squeaks at stops. Previous owner said he did the brakes, but guessing he pad slapped it. Can’t handle the long squeak to stop. I adjusted the rear e brake last week. Pretty straightforward, had good results. Bit of a pain we have to remove the rotor to do it….