How to Reset the Tire Pressure Light (TPMS) on a Cadillac XT6

1. Set the parking brake and place the vehicle in Service Mode.
2. Make sure the Tire Pressure info display option is turned on in the DIC Options menu.
3. Use the five-way DIC control to scroll to the Tire Pressure screen, then press and hold the thumbwheel until the horn sounds twice.
4. Starting at the driver side front tire, hold the relearn tool against the sidewall near the valve stem and press its button until the horn chirps.
5. Repeat at the passenger side front, passenger side rear, then driver side rear tire.
6. Turn the vehicle off and set all four tires to the pressure on the Tire and Loading Information label.

• Needed after rotating tires or replacing TPMS sensors, or after swapping a spare for a road tire with a sensor.
• You have two minutes for the first tire and five minutes overall, or the process stops and must be restarted.

Source: 2025 Cadillac XT6 owner's manual, PDF pages 327, 328. 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.