My 02 malibu vlx with fuel injection only has the in-line filter. It is located on the fuel line, near the gas tank. It is accessed by removing the seat bottom just above the transmission ( mine is on the starboard side of the tranny).
You need to loosen the hose clamps to remove the old filter. Check to make sure you have the new filter on in the right direction, then tighten.
Off the top of my head, I recall the item number to be wix 3033?? You can cross reference at Napa
http://www.napaonline.com/ good luck