How to Jump Start a GMC Acadia

1. Check that 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 shift lever in P (Park) with an automatic transmission.
3. Turn the ignition off and switch off all lights and accessories in both vehicles, except hazard flashers if needed.
4. Connect the red positive (+) cable from the discharged battery positive (+) terminal to the good battery positive (+) terminal.
5. Connect 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 good vehicle and let it idle for at least four minutes.
7. Try to start the vehicle with the dead battery, then remove the cables by reversing Steps 6–9 in exact order.

• The discharged battery positive (+) terminal is under a cover on the driver side; open the cover to expose it.
• If it will not start after a few tries, it probably needs service.
• Connecting or removing cables in the wrong order can cause electrical shorting and damage not covered by warranty.

Source: 2026 GMC Acadia owner's manual, PDF pages 317, 318. 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.