what year is the truck? if its 94-95 the pcv is on the valve cover, in front where a hose goes to it, to take it out, you need to first take off the hose, then take some grips on the spin nut right on the valve cover and spin it in a revers motion till it comes off, then pull the pcv off with needle nose pliers, this should help out, i have done it my self, any other q's? e-mail me at [email protected]
The pcv valve is under neath the airbox that says 2200 SFI. I don't think that it comes out though. It is part of the valve cover. The owners manual doesn't say that it is changed in the Maintenece Section. I may be wrong though.