Replacing the fuel filter?

I attached the procedure for you for the replacement.

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

I would have someone check the filter while the engine is running to be sure there is no leak.

Roy

1. Keep a shop cloth and a container ready to capture any spilled fuel.
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief. See: Fuel Pressure Release > Procedures > Fuel Pressure Relief
3. Raise and support the vehicle. Refer to Vehicle Lifting.
4. Remove the fuel filter bracket bolt (1).

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5. Disconnect the fuel filter from the engine fuel feed pipe (1).

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6. Tilt the fuel filter downward and drain off the fuel into an approved fuel container.
7. Disconnect the fuel tank feed and return hose fittings from the fuel filter.
8. Drain any remaining fuel into an approved fuel container.
9. Discard the fuel filter into an approved container.

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.