2004 ion won't start. Lights work. When I turn key don't get series of clicks, get one snap.

 2004 Saturn ion won't start

That symptom usually means the solenoid on the starter is bad and no longer is completing the circuit to engage the starter. A new starter will likely solve that issue. A series of rapid clicks would indicate a week battery. You can try repeatedly turning the key to the start position rapidly, sometimes the starter will start working. You can also try tapping the starter while somebody holds the key in the start position, if the starter engages place it.

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