The "check-engine" codes on your 1997 Chevy Lumina indicate a problem with the various sensors and valves. The "check-engine" light will illuminate when there is a problem that needs service. Because the problem could be a variety of things, you'll need a reliable way to troubleshoot the system. Checking the on-board diagnostic computer of your Lumina will tell you exactly what is wrong with the vehicle so that you can fix it. For this, you need an on-board diagnostic (OBD) scan tool, available at most auto-parts stores.
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Things you need
- OBD scan tool
Open the fuse panel cover under the steering column by pulling down on it with your fingers.
Locate the open port to the left of the fuse panel.
Plug the OBD scan tool into the open OBD scan port.
Turn on the ignition but don't crank the engine. Then, turn on the OBD scan tool.
Wait for the scan tool to read "OK" on the display. Then turn off the ignition and unplug the scan tool.
Press "Menu" on the scan tool and use the navigation pad to scroll to the "Stored Codes" menu. Select "Stored Codes" and use your Lumina's service manual to translate the meaning of the codes.
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