Won’t Detect New Brake Pads/Pad Monitor

Bucky7711 · 2026-08-10T10:23:48-0500

Hi all- was wondering if anyone has any advice as I am having an issue with my 2022 AT4 not detecting new brake pads. Just replaced the rear pads only with a new pad sensor. I used all GM parts, no aftermarket. Followed the correct procedure of placing the vehicle in brake service mode. Confirmed that it came out of service mode when I was finished installing the pads. The vehicle won’t detect the new rear pads to allow me to reset the pad life. Dash still is saying I need to service the brake monitor. When I go to the pad life screen, Service System remains on in red and cannot select “rear pads installed”. Truck has 48,800 miles on it and the front pads are still at about 40% or so. Anyone else come across this with any advice? Any help would be greatly appreciated. Thanks for your time….

pinebaron · 2026-08-10T13:20:00-0500

Welcome. Lets wait for @gemarsh to respond. He usually has most answers.

Bucky7711 · 2026-08-10T13:20:47-0500

pinebaron said:
Welcome. Lets wait for @gemarsh to respond. He usually has most answers.

Thanks very much, I appreciate it.

gemarsh · 2026-08-11T00:57:26-0500

Welcome.

Try this procedure. Hopefully it will work, otherwise it will require a trip to someone with a bidirectional scan tool that is capable. (More than likely) 🫩

1. Turn the ignition to the ON position without starting the engine.

2. Press and hold the brake pedal firmly.

3.Navigate to the Driver Information Center using steering wheel controls.

4.Select Vehicle Settings from the main menu.

5. Choose Brake Pad Life from the submenu.

6. Press and hold the reset button for 3 seconds.

7. Confirm the reset when prompted on the display.