sunfire ignition switch info needed
 

Hi
I have a sunfire 2001 ,
my anti theft light is on along with a service light
I have a ignition switch modular on the side of my steering wheel
and ignition lock with the pass anti theft chip on it
whats the difference between the two and witch one would control the fuel
cause it to miss fire and the motor to stall . .

can some one please help me

thank you