U-Joint and squealing

I think I've diagnosed it...at first it sounded like my belt...but that definitely wasn't it. Youtube vids out there confirm it...sounds just like mine.

I greased all but 1 of my zerks...but I can't get to one. I'm supposed to go on a camping trip this weekend.....do you think it'll be ok? It just started doing it. No hardcore offroading...just light trails to get to the site and we're parking.

Thoughts?

 

why cant you get to it? theyre all accessible..gonna guess the front drive shaft aft one is the bugger..as far as being OK..who knows really? BUT I will tell you, I drove mine for a while with squeaky U joints as I had surgery and couldnt climb under my truck at the time.