[2013GV]

considering OBD3 is still a concept, and your car is OBD2....you will need a specific scan tool to reset the oil change light, a lot of the ELM based ones won't on the Suzukis

or...try this

Turn ignition on with engine not running and within 5 seconds fully press gas pedal to floor three times , the amber light should flash and system should reset, turn key off , next restart light should be off . If light is still on repeat steps.