How to Jump Start a Chevrolet Volt

1. Turn off both vehicles, including the radio, lamps and unneeded accessories, and unplug anything from the power outlets.
2. Open the access covers on the Volt's 12-volt battery under the rear load floor to reach the positive (+) and negative (−) terminals.
3. Connect the red positive (+) cable to the positive (+) terminal of the other vehicle, using a remote positive terminal if available.
4. Connect the other end of the red cable to the positive (+) battery terminal of the Volt.
5. Connect the black negative (−) cable to the Volt's negative (−) terminal, then attach the other end to unpainted metal engine part or remote negative (−) terminal on the other vehicle.
6. Press POWER to start the Volt, then try starting the other vehicle.
7. Remove the cables in reverse order: black from the other vehicle, black from the Volt, red from the Volt, red from the other vehicle, then close the terminal covers.

• Never connect positive (+) to negative (−), and do not connect the negative cable to the run-down battery's negative terminal.
• The engine will only start if it is needed.
• After the disabled vehicle starts and the cables are removed, let it idle for several minutes.

Source: 2019 Chevrolet Volt owner's manual, PDF pages 305, 306. 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.