How to Reset the Oil Life on a Cadillac CT5

Steps from the 2026 Cadillac CT5 owner's manual.

Open the vehicle status content on the infotainment display.
Go to the Maintenance group.
Select Oil Life.
Choose the Reset option.

The Oil Life must be reset after each oil change; it will not reset itself.
Do not reset it at any time other than when the oil has just been changed.

Source: 2026 Cadillac CT5 owner's manual, PDF page 114. 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.

Confirm with your own manual, dipstick or door-jamb label.
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