Where do you find the fuel filter on a 93 Pontiac transport?

GM puts their fuel filters underneath the vehicle along side of the frame about mid way between the rear wheels and the engine. Approximately below the driver seat. The gas line still looks like a steel line and the filter is a cucumber shaped plastic or metal container about two and a half inches in diameter and four inches long. It has connectors that a special tool has been made to release them, but you can also do the job with ordinary pliers. You need to release the pressure on the line by removing the gas tank top.