Do yourself a favor an have it towed to a qualified repair shop. Just replacing parts is not the way to diagnose the problem . Viewing service information on how it works is . Hooking up a professional scan tool (not a code reader) an checking for DTC'S - diagnostic trouble codes in all the modules (computers ) on the vehicle . Bet you have no idea how the starting system even works on your that vehicle . 2008 Saturn Xr What ? astra - Vue - outlook - Aura ???? When the ignition switch is turned to the Start position, the body control module (BCM) receives battery voltage on the ignition 1 voltage circuit, and less than 5 volts on the off/run/crank voltage circuit. The BCM supplies voltage to energize the RUN/CRANK Relay 32. The BCM sends a high speed GMLAN serial data message to the engine control module (ECM) that the key is in the start position. The ECM receives the message from the BCM, and also receives a serial data message from the transmission control module (TCM) containing the shift lever position. If the shift lever is in Park or Neutral when ignition switch is turned to Start, the ECM supplies voltage to the START Relay 31. The START relay supplies voltage to the S terminal of the starter solenoid, through the 30 A STRTR Fuse 26, in order to crank the engine.