Ok, so I go to drop the transfer case so I can replace leaky seals. Rather work on it on the bench versus laying on my back on the garage floor.

Anyways the two bolts holding up the TC on the drivers side have some kind of cap or lock that covers roughly a 1/4 of the bolt head. It appears this cap has a base that sits under the bolt head. It hard to get a good look at them because there is not much clearance. Haven’t been able to figure out how to get a good grab on the bolt with a wrench. Never seen these kind of caps before.

Anyone familiar with these bolt caps and if so how do you deal with them?