If there is absolutely no response from the starter when the key is turned to START, possibilities are:
Ignition switch - Check for power at the following switch while in START
Park/Neutral Sensor/switch (try starting in NEUTRAL)
PATS system (if equipped)
Any alarm interlocks (if equipped)
Starter motor (solenoid)
Troubleshooting the fault will give you confidence that you are replacing the correct part and not just guessing until you guess correctly.
Steve
