1. Turn the ignition to the "ON" position (without starting the engine).
2. Locate the trip odometer reset button. This is usually a small button on the instrument cluster, often near the speedometer or odometer. It might be labeled with a small triangle or a similar symbol.
3. Press and hold the trip odometer reset button. You'll need to hold it down for several seconds (typically 5-10 seconds, but it might vary slightly).
4. While holding the button, cycle the ignition. Turn the key to the "OFF" position, then back to the "ON" position *while still holding the button*.
5. Continue holding the button. Keep holding the button for a few more seconds after turning the ignition back on.
6. Release the button. The oil life monitor should now reset to 100% or a similar indication. You might see the oil life percentage display briefly before settling on the new value.
If this doesn't work:
* Check your owner's manual: The exact procedure may vary slightly depending on the specific trim level of your 2003 Chevy Tahoe. Your owner's manual will have the most accurate instructions.
* Consult a mechanic: If you're still having trouble, a qualified mechanic can assist you in resetting the oil life monitor.
Remember that resetting the oil life monitor is only a reminder. You should still follow your recommended oil change interval based on mileage and driving conditions, regardless of what the monitor displays. Don't solely rely on the indicator!
