[Corvette95]

Do you know how to pull the fuel pump assembly...it is not hard. Appears hard the first time you do it. You have to twist and rotate the assembly when removing . Get yourself a service manual ASAP. You will pull the fuel filler plate (torx screws). remove fuel overflow hose, gently remove the rubber boot around the filler neck (careful ..all of this is old and brittle and will tear and or break), remove the fuel lines, remove the 10mm bolts and remove the fuel sending (while twisting) unit with the dual fuel pumps attached. You will see a small plastic "box" where the fuel float moves on contacts to change the resistance (ie fuel level)...my method of cleaning is electrical contact spray a cut down brush in the shape of a Q-Tip. You will also want to change the fuel pumps and strainer as a matter of maintenance, new orings for the 10mm bolts and a new filler neck gasket. I also too hand pump out the tank (if you just got this car) empty all the gas and hand soak up and clean all the rust and gunk you will find on the bottom of the fuel tank. How you clean the sensor depends on what kind of deterioration you may find. There are links in the solution section. (most of the time it is from people storing the car with fuel tank less than full allowing rust and corrosion on the sender unit)