Grease Zerks?

Ok so I've got this squeak going in somewhere in the back of my truck that only happens when I'm in reverse (doesn't do it when I'm rolling back in neutral, the truck has to be in reverse). I posted about this in another thread that I can no longer find and they said that I needed to grease the u joints on my drive shaft, and that since I had a TRD then it would have the grease zerks to do it. I just went through the trouble of finding a grease gun and got up under the truck and no zerks to be found. Any ideas?

 

I rarely go through a computer and usually use tapatalk to get on this forum. I don't think the forum is very compatible with tapatalk because when I search I get no results and when I go under the "participated" tab to see what threads I've participated in, it says "no threads".

But I'll probably get around to replacing them if I figure out that that is for sure the issue. I was wanting to grease them first to see if it went away. But there isn't a spec of dirt anywhere underneath this truck. Not cleaner as a whistle, CLEANER. There's absolutely nothing inside the u joints on my truck.

 

And what would cause it to squeak only in reverse and no other time?

 

Maybe this will help you.