How to Jump Start a Chevrolet Tahoe and Suburban

1. Check that the other vehicle has a 12-volt battery with a negative ground system, then park the vehicles close but not touching.
2. Set the parking brake on both vehicles, put an automatic in P (Park), and turn the ignition off on both.
3. Turn off or unplug accessories and unneeded lights, and check that the jumper cables have no loose or missing insulation.
4. Connect one end of the red positive (+) cable to the discharged battery positive (+) terminal.
5. Connect the other red end to the good battery positive (+) terminal or its remote positive (+) terminal, without letting it touch metal first.
6. Connect one end of the black negative (−) cable to the good battery negative (−) terminal or remote negative (−) terminal.
7. Connect the other black end to the discharged battery negative (−) grounding point, then start the good vehicle and let it run for a while.
8. Try to start the vehicle with the dead battery; to remove the cables, reverse Steps 8–11 in exact order.

• The discharged battery positive (+) terminal is under a cover on the passenger side; open the cover to reach it.
• Do not connect the negative (−) cable to the dead battery's negative (−) terminal, because this can cause sparks.
• If the vehicle will not start after a few tries, it probably needs service.

Source: 2026 Chevrolet Tahoe and Suburban owner's manual, PDF pages 370, 371. 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.