I need anyone who can to help me figure out how to remove the oil dipstick tube from my 89 chevy blazer w/4.3l v6. I have removed the mounting bolt from the top end which secures to near the valve cover. Now what?

 

*Moved to General Tech Help - 1st Gen Tech*

I'm trying to think back to my old S10... I had to do this and I believe I just removed that bolt and gave it a tug. I did have to ream out the hole in the block before putting down in the new tube. A small drill bit wrapped with emry cloth and an extension worked like a charm. But don't forget to change the oil afterwords!