How to Jump Start a GMC Yukon Denali

1. Confirm the other vehicle has a 12-volt battery with a negative ground system, park the vehicles close but not touching, and set both parking brakes with the transmission in P (Park).
2. Turn off both ignitions, unplug unneeded accessories, and switch off the radio and unneeded lamps on both vehicles.
3. Connect the red positive (+) cable to the positive (+) terminal of the vehicle with the dead battery.
4. Connect the other end of the red cable to the positive (+) terminal of the good battery, or its remote positive (+) terminal, without touching metal.
5. Connect the black negative (−) cable to the negative (−) terminal of the good battery, or its remote negative (−) terminal.
6. Connect the other end of the negative (−) cable to the metal bracket bolted to the engine that supports the resonator, on the dead-battery vehicle.
7. Start the vehicle with the good battery and let the engine run for a while, then try starting the other vehicle.

• Do not connect the negative (−) cable to the negative (−) terminal of the dead battery, because this can cause sparks.
• With dual batteries, using the one closer to the starter reduces resistance; it is on the passenger side at the rear of the engine compartment.
• If the vehicle will not start after a few tries, it probably needs service.

Source: 2016 GMC Yukon Denali owner's manual, PDF pages 332, 333, 334. 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.