Chevrolet made the Malibu from 1964 to 1983 then from 1997 to present. Maybe you could narrow that question down a bit to the model year your Malibu is.
how to replace actuator on a 2000 malibu
How do you change the fuel pump on a 2003 Chevy Malibu?
You push the gas door in and it releases.
replace the fuel pump that is in the gas tank.
Yes
You must remove the fuel tank.
How to replace my fuel door cable in my civic 2005
You have to remove the gas tank.
you have to take the whole door panel off and get to it form that way
The new body style Malibu w/2.2L 4cyl has a non-servicable, permanent filter in the fuel tank
Relieve the fuel pump pressure. Remove the fuel tank and on the top is the fuel pump module. Remove the module and replace with a new one.
about 200-$300