How to Jump Start a Cadillac ATS

1. Connect the other end of the red positive (+) cable to the positive (+) terminal of the good battery.
2. Connect one end of the black negative (–) cable to the negative (–) terminal of the good battery.
3. Connect the other end of the black negative (–) cable to the negative (–) grounding point for the discharged battery.
4. Start the engine of the vehicle with the good battery and let it idle for at least four minutes.
5. Try to start the vehicle with the dead battery; if it will not start after a few tries, it probably needs service.

• The first steps (1 to 5) are on a page not provided, so the connection steps before the red cable's far end are not shown here.
• Reverse the sequence exactly when removing the jumper cables, then let the started vehicle idle for several minutes.
• Connecting or removing cables in the wrong order can cause electrical shorting and damage not covered by warranty.

Source: 2019 Cadillac ATS owner's manual, PDF pages 313, 315. 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.