how many fuel filters does a 1994 3500 Pickup have? on 1994 Chevrolet 3500 Pickup

i need to change the fuel filter(s) on a 1994 3500

Asked by for the 1994 Chevrolet 3500 Pickup
My information shows only one located at the intake manifold. They call it a fuel manager/filter. Labor to change it is listed as 1 hour. There is probably a "sock filter on the in tank pick up as well but not a maintenence item.