My son has a 1992 full size Blazer with the 5.7 engine. He is not getting any fuel to the TB. Him and his friends think the fuel pump is shot. But where is the fuel pump relay located on the 92 K5 Blazer? I think they may have looked in the wrong place. They looked on the passengers side. A black box near the ac dryer. We don't have a manual on the Blazer. But I am going to go buy one today. Bought a new fuel pump and all the parts in case the old pump is bad. Thankjs, gearyr

 

Yep, If you look closely you will see that the plastic cover is marked where the fuel pump relay is.
FYI, it's a pretty easy pump to change out, just be sure to drain most of the fuel out of that big ol' 30 gallon tank first.

 

I had to replace my fuel pump in my 1992, in my case it is not an easy job for one or even two people. Besure when your lowering it you dissconnect all wires and tubes going to the tank before you put it on the ground, otherwise you will tear them. Well it also didn't help that i have a lift kit in and i had to do it on an angle downslope and it was half filled. LOL Are you sure your not getting fuel? Can your hear the pump turn on? How did you test it?