How to Reset the Oil Life on a Cadillac DTS

Steps from the 2011 Cadillac DTS owner's manual.

Turn the ignition to ON/RUN with the engine off.
Press the DIC INFO button repeatedly until OIL LIFE REMAINING appears on the display.
Press and hold the DIC INFO RESET button until the display shows 100%.
Turn the key to LOCK/OFF.

Reset the system every time the oil is changed, and not at any other time.
If the CHANGE ENGINE OIL SOON message returns when the vehicle is started, the reset did not work; repeat the procedure.

Source: 2011 Cadillac DTS owner's manual, PDF page 321. 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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