How to Jump Start a Cadillac XT6

1. Make sure the other vehicle has a 12-volt battery with a negative ground system, and park the two vehicles so they do not touch.
2. Set the parking brake firmly and put the transmission in P (Park).
3. Turn the ignition off and switch off all lights and accessories in both vehicles, except hazard flashers if needed.
4. Connect one end of the red positive (+) cable to the discharged battery positive (+) terminal, then the other end to the good battery positive (+) terminal.
5. Connect one end of the black negative (–) cable to the good battery negative (–) terminal, then the other end to the discharged battery negative (–) grounding point.
6. Start the engine of the vehicle with the good battery and let it idle for at least four minutes.
7. Try to start the vehicle with the dead battery, and remove the cables by reversing Steps 6–9 in exact order.

• The discharged battery positive (+) terminal is under a cover that must be removed to expose it.
• If the vehicle will not start after a few tries, it probably needs service.
• After starting the disabled vehicle and removing the cables, let it idle for several minutes.

Source: 2025 Cadillac XT6 owner's manual, PDF pages 343, 344. 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.