1. Turn the ignition to the "ON" position (but don't start the engine). The instrument cluster should light up.
2. Locate the odometer/trip odometer reset button. This is usually a small button on the instrument cluster, often near the speedometer or trip odometer display. It might be labeled with a small triangle or a reset symbol.
3. Perform the reset sequence. This is where the methods diverge. There are a few common variations:
* Method 1 (Most Common): Turn the ignition completely OFF. Then, repeatedly press and hold the odometer reset button while turning the ignition to the "ON" position (but not starting the engine). Keep holding the button until the oil change light goes off or the odometer display starts cycling through some other information. Release the button, and the light should be extinguished.
* Method 2: Turn the ignition to "ON". Press and hold the odometer reset button for several seconds. Release the button when the oil light goes off.
* Method 3: Some Envoys might require a specific sequence of ON/OFF cycles with the ignition. Consult your owner's manual for the exact steps for your particular vehicle's year and model. This is the most reliable method as it eliminates guesswork.
Important Considerations:
* Owner's Manual: The best and most accurate instructions are in your owner's manual. It's the definitive guide for your specific vehicle.
* If it doesn't work: If you try these methods and the light remains on, there might be a problem with the oil level sensor, the oil change indicator system itself, or a related electrical component. Consult a mechanic to diagnose and repair the issue.
If you cannot locate the odometer reset button or find the instructions in the owner's manual, searching online for "[Your specific GMC Envoy year and trim level] oil change light reset" should yield more specific instructions. Remember to always prioritize your owner's manual as the most reliable source.