wat you mean? You dont know what brake shoes are?
Simple to check, loosen all nuts, including the 4 middle ones on the axle, jack up rhs wheel, take wheel off and the 4 axle nuts off. Tap drum with a hammer and it eventually come loose enough so u can pull it off. Then you will find the brake shoes.
Then possibly, if you love mud too much, you will be on bare metal braking! No pad left! (drum brakes are known for this)
Then you will need new brake shoes. If possible. Take them with you to get new ones. Various stores have them but there are few different brand/makes for sierras and the shop normally gets the wrong parts for you!
Goodluck
