A better phrased question would have resulted in a better answer. He didnt even tell us it was a rear caliper, I assumed it was front, and I would wager viper did as well. He has access to the TSRM, just like the rest of us, he could have looked it up.
Had he said "I looked it up the rear caliper assy on TSRM and theres something in the way. (47766c), How do I get in there." so his issue is bolt 47721d, and guess what, you tighten it with a wrench or a ratchet. Your question was how to I tighten it, not how do i get to it. Fifteen fucking question marks didnt help either.