Reset check engine light on 2007 GMC yukon Denali?

To reset the check engine light on a 2007 GMC Yukon Denali, you can use an OBD-II scanner to clear the diagnostic trouble codes (DTCs) that triggered the light. Alternatively, you can disconnect the negative battery terminal for about 10-15 minutes, then reconnect it, which will reset the vehicle's computer. However, it's important to address the underlying issue that caused the light to turn on to prevent it from reappearing. If you're unsure, consult a mechanic for a thorough diagnosis.