Hmm, I should look into replacing mine. I don't use mine too often but at the same time, my mind would be a bit more at piece when I do replace them. I replaced my In-laws rear drums on his 08' Chevy Silverado. It wasn't as bad as I expected it to be. More "simple" than I thought it'd be actually but it is still a bit of a pain to 'replace'.

I've got about 74,xxx miles on my 2015. Maybe I'll spend a good day on it since I've gotta replace my trans fluids anyways. Also, thanks Cobrajet for that link on replace the rear drums!