U will need a gm fuel release tool they have them at the auto parts stores there double side and have a plier action one side does pressure which is the side u need and the other side does return line release. All u do is push the filter towards the line and push that tool in and it will relase. To put the new filter in u wont need the tool it just snaps in. Just tell them at the auto parts store u need a gm pressure line fuel release tool. Let me know how it goes.