Here's what you should do:
1. Get the diagnostic trouble code (DTC): You'll need to obtain the code(s) stored in the vehicle's computer. You can do this in a few ways:
* OBD-II Scanner: The most reliable method is using an OBD-II scanner (available at most auto parts stores). Plug it into the OBD-II port (usually under the dashboard) and it will read the trouble codes. The scanner will often give you a description of the code, helping you understand the problem.
* Auto Parts Store: Many auto parts stores offer free code reading services. They can scan your vehicle and tell you what the code means.
2. Identify the problem: Once you have the DTC, you can look up the code online (many websites provide explanations) or consult a repair manual for your specific S10 model. This will help you understand the nature of the problem.
3. Repair the problem: This is the crucial step. Depending on the code and your mechanical abilities, you might be able to fix the problem yourself (simple things like replacing a loose gas cap), or you might need to take it to a mechanic.
4. Clear the code (after repair): Once you've fixed the problem, you can clear the code using your OBD-II scanner. The CEL should then turn off. If it stays on, there's likely another issue that needs attention. This also sometimes happens because the light needs a few driving cycles to reset.
Important Considerations:
* Ignoring the CEL is dangerous: Driving with a malfunctioning system can lead to significant engine damage, reduced fuel economy, or even safety hazards.
* Don't just disconnect the battery: This will temporarily turn off the light, but the problem will still exist and the light will come back on.
* Generic OBD-II scanners are sufficient: You don't need an expensive professional-grade scanner for most CEL issues.
In short, fixing the underlying problem is the only way to properly address the Check Engine Light. Simply trying to turn it off without addressing the root cause is irresponsible and potentially harmful.
