it appears my tensioner pulley has broke off. Can anyone lend advice on replacing? Can I just remove the 13 mm bolt securing it and replace it or is it more involved?

 

so i got the actual component off, so now my question is what part do i need? I see they sell the whole component ac delco part 38198 or can i get the actual pulley ac delco part 38027. I f I can get just the pulley, does it just slide on?

 

nevermind, I was able to get the bolt off, so i should be good with just a pulley