How to Reset the Oil Life on a Chevrolet Sonic

1. Press MENU to bring up Remaining Oil Life on the display.
2. With the oil life display active, press SET/CLR.
3. Select YES.
4. Press and hold SET/CLR until a single chime sounds.
5. Check that the oil life now reads 100%.

• Reset only right after an oil change, since an accidental reset cannot be corrected accurately.
• If the : % CHANGE message returns at startup, the reset failed and the procedure should be repeated.
• If reset by accident, change the oil at 5 000 km (3,000 mi) since the last change.

Source: 2020 Chevrolet Sonic owner's manual, PDF page 212. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.