Having problems with your 1993 Geo Tracker ?
Reset Check engine light on 1993 Geo Tracker without scan tool.
A 1993 Tracker will have OBD1 technology. Just unplug the battery for 5minutes and plug it back in. If the light persists You will have to find out and repair the problem that your cars computer believes it has.
Repair Help & Product Troubleshooting for 1993 Geo Tracker
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