2020 Sierra Rear Brakes Issue, Inside Pad Bad Outside Still Good

alvarezz09 · June 21

Ii have a 2020 GMC sierra 1500 Elevation. The service brake pad warning came up I brought it to the dealer and was told I had plenty pad left but that the sensor was grounding out and in order to replace it I would have to change my brakes. I just disabled the message. Now at 26,000 miles only I keep hearing a scrapping noise took off the rear calipers and noticed that my outside pad was still had a lot of life in it but the inner pad was totally gone. I think it has something to do with the electronic Parking Brake. Not Happy about this, now I need to by new rotors and brake pads for the rear. Iv had truck that I did not have to replace the brakes till 50,000 miles.

Has anyone experience this?

Gangly · June 27

A singular pad wearing out is generally a sign of a sticking caliper.

silveradosid · June 28

not in this case, a lot of other people have posted with the same problem. although i got more mileage out of mine, my truck did the same thing and since replacement it is doing it again and i don't know why

alvarezz09 · June 28

3 hours ago, silveradosid said:

not in this case, a lot of other people have posted with the same problem. although i got more mileage out of mine, my truck did the same thing and since replacement it is doing it again and i don't know why

You absolutely correct, for some reason the electronic brake causes a lot of drag. I recently bought launch CRP129x and was able to reset the Brake Module. I got a lot of codes and once I reset it now the dash shows me the brake pad remaining.

silveradosid · June 29

interesting, although i haven't scanned mine in awhile, last time i did i had no codes. i used gds2 to scan my truck. will scan it today and see if there is something there