Search Function in Forums?

I don't know what happened or why, but I could swear their used to be a simple, easy to find button on here that said something like "Search This Forum". So if I was in the Silverado forum, and was looking for any info on a Transmission issue, I could easily query the word "Transmission", and pull up a list of any previous threads that had that word in them. Related specifically to the types of vehicles in that particular forum. I am not finding ANY search tool on here now, other that the Google search box, which looks out at the entire internet, not in the Automotive Forums category you are looking at.
Just above that, is a Search button that takes you out of the Forums altogether.
Maybe I am blind and just not seeing it? Please give this old man some help, thanks!