1. Check the gas cap: Ensure that the gas cap is properly closed. A loose or faulty gas cap can cause the engine light to turn on.
2. Check the fuel system: Inspect the fuel lines, fuel filter, and fuel pump for leaks or other problems. A faulty fuel system can cause the engine light to turn on.
3. Check the emission system: Look for any loose hoses or damaged components in the emission system, such as the catalytic converter or oxygen sensors. A faulty emission system can cause the engine light to turn on.
4. Disconnect and reconnect the battery: This can sometimes reset the engine control unit (ECU) and turn off the engine light. Disconnect the battery for at least 10 minutes and then reconnect it.
5. Use an OBD-II scanner: An OBD-II scanner can be used to read the trouble codes stored in the ECU. These codes can help you identify the source of the problem and turn off the engine light.
6. Fix the underlying issue: Once you have identified the source of the problem, fix it as soon as possible. This could involve replacing a faulty component, cleaning a sensor, or performing a software update.
Note: If none of these steps work, it may be necessary to take your Silverado to a dealership or a qualified mechanic for further diagnosis and repair.