How to Jump Start a Chevrolet Silverado 2500HD/3500HD

1. Check that the other vehicle has a 12-volt battery with a negative ground system, and park the vehicles close but not touching.
2. Set the parking brake on both vehicles, put automatic transmissions in P (Park), and turn both ignitions off.
3. Turn off or unplug unneeded accessories, radio and lights, and check that the jumper cables have no loose or missing insulation.
4. Connect the red positive (+) cable to the discharged battery positive (+) terminal, then to the good battery positive (+) terminal.
5. Connect the black negative (–) cable to the good battery negative (–) terminal, then to the discharged battery negative (–) grounding point.
6. Start the vehicle with the good battery and let the engine run for a while.
7. Try to start the vehicle with the dead battery, then remove the cables by reversing Steps 8–11 in exact order.

• The discharged battery positive (+) terminal is under a cover on the passenger side; open the cover to expose it.
• On a four-wheel-drive vehicle, make sure the transfer case is in a drive gear, not N (Neutral).
• If it will not start after a few tries, it probably needs service; after starting, let it idle for several minutes.

Source: 2026 Chevrolet Silverado 2500HD/3500HD owner's manual, PDF pages 348, 349, 350. 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.