Was under my truck today, and got looking at the top of the passenger side rear shock. I couldn't figure out an easy way to reach it with a wrench. Is there an easy way?

 

use either open or closed end wench to loosen then a ratchet closed end wrench.
ofcourse, I have 2" body lift so it's not a problem...

 

Its not that hard. I used a racheting box wrench like anthony1 said. The harder part is holding the shock on that side. I used a strap wrench through the triangular shaped hole above the panhard bar. It took longer to remove my spare tire than remove the bolts on passenger rear shock.

 

I get at them right over the frame. Really about the right length for my 3/8's drive ratchet. The 1" bodylift helps out though.