Here's what you should do:
1. Get a Diagnostic Code: The first step is to determine *why* the light is on. You can do this in a few ways:
* OBD-II Scanner: Buy a relatively inexpensive OBD-II scanner from an auto parts store. Plug it into your Silverado's OBD-II port (usually under the dashboard), and it will read the diagnostic trouble codes (DTCs). These codes are numbers that correspond to specific problems. You can then look up the code online to understand the issue.
* Auto Parts Store: Many auto parts stores will read the codes for free. They can even help interpret the code and suggest potential solutions.
2. Address the Problem: Once you know the DTC, you can troubleshoot the problem. This might involve:
* Simple Fix: Sometimes, it's something minor like a loose gas cap. Tighten it and see if the light goes off after a few driving cycles (start and stop the engine a few times).
* Repair or Replacement: More complex issues might require replacing a faulty sensor, fixing a leak, or addressing a more serious mechanical problem. This may require a mechanic's expertise.
3. Clear the Code (After Repair): *Only after you've addressed the root cause* should you clear the code. Many OBD-II scanners have a "clear codes" function. Some advanced scanners even allow you to clear codes from specific modules.
Important Considerations:
* Don't just clear the code: Clearing the code without fixing the problem will only temporarily turn off the light. The problem will likely persist and could worsen.
* Professional Help: If you're uncomfortable troubleshooting the problem yourself or if the code points to a complex issue, take your Silverado to a qualified mechanic.
In short, resetting the light is the last step, not the first. Focus on finding and fixing the problem that triggered the Service Engine Soon light.
