How to Reset the Oil Life on a GMC Sierra 2500HD/3500HD

1. Show the oil life percentage on the Driver Information Center (DIC).
2. Press and hold the thumbwheel on the steering wheel for several seconds.
3. If the vehicle has no DIC controls, press and hold the trip odometer reset stem instead.
4. When the confirmation message appears, select YES.
5. Check that the oil life now reads 100%.

• Reset the system every time the oil is changed; it will not reset itself.
• If it is reset accidentally, change the oil within 5 000 km (3,000 mi) of the last oil change.

Source: 2026 GMC Sierra 2500HD/3500HD owner's manual, PDF page 289. 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.