GM Oil Life System - Resetting (GTO)
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
The vehicle has a computer system that has a change engine oil light, indicating when to change the engine oil and filter. This is based on engine revolutions and engine temperature, and not on mileage. Based on driving conditions, the mileage at which an oil change will be indicated can vary considerably. For the oil life system to work properly, the system must be reset every time the oil is changed.
- Turn the ignition to RUN, with the engine OFF.
- Fully press and release the accelerator pedal slowly 2 times within 5 seconds.
- Turn the ignition to LOCK.
- Start the engine.
- If the CHANGE OIL light comes back on, the engine oil life system did not reset. Repeat the procedure.