How do you reset the check engine light on 03 Chevy Suburban after replacing oxygen sensor?

1. Make sure the oxygen sensor is properly installed and connected.
2. Turn the ignition key to the "ON" position without starting the engine.
3. Press and hold the "Trip" button on the instrument cluster for at least 10 seconds.
4. While holding the "Trip" button, turn the ignition key to the "START" position and start the engine.
5. Continue holding the "Trip" button until the check engine light turns off or the instrument cluster displays a message indicating that the codes have been cleared.
6. Release the "Trip" button and turn the ignition key to the "OFF" position.

Please note that these steps may vary slightly depending on the specific model and year of your Suburban. It's always a good idea to refer to your vehicle's owner's manual for the exact procedure. Additionally, resetting the check engine light only clears the stored diagnostic trouble codes (DTCs) and turns off the indicator light. If there is still an underlying issue with the oxygen sensor or the emissions system, the check engine light may come back on.