[FLOZANO]

Estuve averiguando un poco el tema en foros y me contestaron que hiciera algunas pruebas, como el scanner que tengo tiene Datos en Vivo, puedo leer que esta pasando al dar partida.
Estos datos son como los minimos para poder echar a andar el motor.

FICM_L: should read 11.0 to 12.0 volts at key-on/engine-off and remain steady while you crank the engine.

FICM_M: should read 47.5 to 48.0 volts at key-on/engine-off and remain steady while you crank the engine.

FICM_V: should read 11.0 to 12.0 volts at key-on/engine-off and remain steady while you crank the engine.

ICP V: should read 0.25 volts at key-on/engine-off and climb to minimum 0.8 volts while you crank the engine.

ICP: should read 0 psi at key-on/engine-off and climb to minimum 500 psi while you crank the engine over.

IPR Duty Cycle: should read 14.84% at key-on/engine-off and climb to around 50% as you crank the engine over.

FICM_SYNC: should read "NO" at key-on/engine-off and change to "YES" when you crank the engine over.

SYNC: should read "NO" at key-on/engine-off and change to "YES" when you crank the engine over.

V_PWR: should indicate around 12 volts at key-on/engine-off and drop to no lower than 9.5 volts while cranking the engine over.

RPM: should indicate around 175 to 200 as you crank the engine over. Any slower, and it's not cranking fast enough.

Fuel pressure spec is 56 psi, and no lower than 45 psi under load. This can be measured by connecting a fuel pressure gauge to the secondary fuel filter housing port that requires a 6mm allen key to remove.

EVERYTHING I've listed above, is what is needed to achieve a 6.0L engine that starts. You now need to find out which of the above is missing.