How to Reset the Oil Life on a Chevrolet Blazer

1. Bring up REMAINING OIL LIFE on the Driver Information Center (DIC).
2. Press and hold the thumbwheel on the DIC while the Oil Life display is showing.
3. Confirm yes, and the oil life will change to 100%.

• Reset the system every time the oil is changed.
• Alternate method: put the ignition in Service Mode, display REMAINING OIL LIFE, then fully press and release the accelerator pedal three times within five seconds.
• If the system is reset accidentally, change the oil at 5 000 km (3,000 mi) since the last change.

Source: 2026 Chevrolet Blazer owner's manual, PDF page 254. 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.