I tried to change the rear pads but the caliper is weird. Usually there is two bolts but this only has one on the bottom. There is some type of pin at the top with a cap full of grease. Any clue on how to take off the caliper.

Thanks.

hey i dont know if you did this already, but on my 99 sts its similar. i have one bolt at the bottom and once you take that one bolt out you can then flip up/open the caliper. then if you need to change rotor, you can pull the caliper out and off the hinged bolt it just pops out/off after snug pull. but if just changing pads just flip it up, replace put back down...hope that helps.