New GMC Sierra 3500 for Sale in Portsmouth, NH

Automatically adjusts your speed to maintain a safe distance from the car ahead.

See behind your vehicle while reversing with a live video feed to avoid obstacles.

Make and receive calls safely through your car's audio system without touching your phone.

Warns you of approaching vehicles from the sides when backing out of a parking spot.

Start your car with the push of a button while the key fob stays in your pocket or bag.

Alerts you if your car begins to drift out of its lane without signaling.

Enjoy high-quality sound with advanced speakers for a better listening experience.

Start your car from a distance to preheat or cool the cabin before you get in.