I am tryin to change the rear brakes on my 1998 monte but cant seem to find the bolts to remove. Not sure if I just remove to two 15 mm bolt altogether.

 

Check this link and find the one you want scroll to the lower part of the page, there are Luminas and Montes on here. all pretty much the same.

https://www.google.com/search?client...98+monte+carlo

 

the setup of the brakes and caliper doesnt have the same bolts or set up as the videos in the link.

 

So while you are at the Youtube site just enter in the search what you are looking to do and hit enter and you should get several options. or you can get a manual on Monte Carlo repairs too.
You didn't say weather the Car had disc brakes in the rear or drum brakes? Once you put that in the search they will show up. There are a bunch of videos on both in there that will direct you thru the entire process. Good luck.