How to Reset the Oil Life on a Buick Cascada

Steps from the 2019 Buick Cascada owner's manual.

Turn the ignition on with the engine off.
Press the DIC MENU button on the turn signal lever to open the Vehicle Information Menu.
Scroll with the thumbwheel until you reach REMAINING OIL LIFE.
Press and hold SET/CLR to reset the oil life to 100%.
Turn the ignition off.

Reset the system every time the engine oil is changed.
The reset worked when CHANGE ENGINE OIL SOON is off and REMAINING OIL LIFE 100% shows; if the message returns at start-up, repeat the procedure.

Source: 2019 Buick Cascada owner's manual, PDF page 185. 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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