Method 1: The Key Cycle Method (Most Common)
This method involves cycling the ignition switch. It's the most commonly successful approach for many GM vehicles from that era.
1. Turn the ignition key to the "ON" position (where the dash lights illuminate but the engine doesn't start). *Do not start the engine.*
2. Turn the key to the "OFF" position.
3. Repeat steps 1 and 2 five to eight times. The exact number might vary; you'll know you've succeeded if the oil life indicator resets on your instrument cluster.
4. Start the engine. The oil life indicator should be reset or show a high percentage.
Method 2: Using a Scan Tool (More Reliable)
This is the most reliable method, especially if the key cycling method doesn't work.
1. Obtain an OBD-II scan tool. These are readily available at auto parts stores.
2. Connect the scan tool to the OBD-II port. This is usually located under the dashboard on the driver's side.
3. Follow the scan tool's instructions to reset the oil life monitor. The exact steps vary depending on the scan tool, but you'll likely find an option in the service menu to reset maintenance reminders.
If neither method works:
* Check your owner's manual: Your owner's manual should have the precise instructions for your specific vehicle model.
* Consult a mechanic: If you're still having trouble, a qualified mechanic can easily reset the light using their diagnostic equipment.
Remember to always change your oil according to the recommended schedule in your owner's manual, regardless of what the oil life monitor indicates. The monitor is just a reminder, not a replacement for scheduled maintenance.
