Agree with the spare tire carrier in the GM's. I've put my spare tire in the rotation with the tire rotation every 7500 miles, so for me that equates to about every year. I get it out, put it on the first spot I take a tire off of and take it off when I put the last tire on. Store it again. The rim from the old '03 Chev was about eaten up from all the salt/beet juice they use in this city. I'd have been afraid to use it if I'd have had to. Think this one ('17) will eventually end up in the box sooner than later or especially during the winter.
I actually had the spare stored in the box until I had to go harvest my brother in law's garden right before the first frost last week. Put it back under so i'd have room for watermelon, cantaloupe, squash, potatoes, corn ................................. good intentions but I needed the whole box for produce.
Hint: those of you that have your dealer/other rotate your tires, have them drop your spare, lubricate and put it back.
On my '03 I was able to unbolt the frame and spare from the box to get at it one day when I couldn't release the spare. I didn't/don't have the cutting tools. So with the right Nonworthless tools, you can get it down.