1999 Chevy Suburban break drum

spray penetrating oil around the lugs and let it soak in. next hit around the inside of the drum with a hammer. then try popping it off. if the drum is loose but wont come off then the pads need to be retracted so that the drum wil come off. this video will help

https://youtu.be/UV0kfP17Co0

Please run down this guide and report back.