How to Jump Start a Buick Envista

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). Turn the ignition off and turn off all lights and accessories in both vehicles.
3. 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, 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 (–) terminal.
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 discharged battery. To remove the cables, reverse Steps 6–9 in exact order.

• The discharged battery positive (+) terminal is under a trim cover in the engine compartment on the driver side; open the cover to reach it.
• If the vehicle will not start after a few tries, it probably needs service.
• After removing the cables, let the started vehicle idle for several minutes.

Source: 2026 Buick Envista owner's manual, PDF pages 243, 244, 245. 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.