One problem related to other fuel system pump has been reported for the 2005 Chrysler 300C. The most recently reported issues are listed below.
Takata recall . My 2005 Chrysler 300c 5. 7 started smelling like gas every time I filled up the tank. Time past till I decided to take a look why it smelled like gas. Furst thing to check was the fuel pupms. Finding thst the passenger side had a budle of gas ontop of the fuel pump housing . I replaced the rubber gasket but that didnt help at all . So now I need to replace the fuer pump because it looks like it might have a crack somewhere .