Where is the egr valve on a 2000 b4000?

[jtbel]

I am trying to track down the cause of an unsteady idle. I already replaced plugs and gapped them at .054. The pcv valve is clean and unstuck. The iacv is clean and unstuck. I just got it recently, but I think it is using a little bit of water, so I'm hoping it is not the head gasket. I think cleaning the egr would be the last step before I start replacing the wires and coil. (The truck runs great), Thanks