I have a 2005 Titan LE and I have taken it back for service now for the third time. Fuel gauge wont show full after fill up and I never know how much gas is in the thing. Also messes with the computer telling me how many miles to empty. Brand new it would be over 400 miles to empty. Now it will not read over 380. The dealer tells me the sending unit for the fuel system is bad and they keep replacing it. Any others having same trouble?