2023 GMC Sierra 2500HD 4WD Crew Cab 159 AT4 â" AT4 Preferred Package, Driver Alert Package I, Driver Alert Package II, Preferred Equipment Group 4SB â" 6.6L V-8 direct injection, variable valve control, regular gasoline, 6-speed automatic. This heavy-duty Sierra pairs a muscular 401-horsepower V8 with a robust automatic transmission to deliver the towing muscle and highway composure expected from a 3/4-ton truck, while offering modern efficiency and connected conveniences for everyday driving.
AT4 Preferred Package: Upgrades the truck with premium audio, enhanced camera coverage and driver conveniences that make off-road adventures and long highway runs more comfortable and confidence-inspiring.
Driver Alert Package I: Focuses on situational awareness and parking support so you can navigate crowded lots and lane changes with fewer surprises and greater assurance.
Driver Alert Package II: Adds forward-thinking collision and lighting technology designed to reduce distraction and help avoid incidents during changing traffic and low-light conditions.
Preferred Equipment Group 4SB: Equips the Sierra with heavy-duty mechanicals, towing-ready components and interior comforts that balance work-ready capability with everyday usability.
Wireless Apple CarPlay/Android Auto mirroring keeps navigation, music and messaging accessible on the truckâs display without fumbling for cables, helping you stay connected while keeping your eyes on the road.
Forward collision mitigation continuously watches traffic ahead and prepares braking and alerts to help prevent or reduce the severity of a front-end impact, adding an extra layer of safety in busy driving conditions.
The built-in mobile hotspot turns the Sierra into a connectivity hub so passengers can stream, work or study on the go without using up phone data, especially useful on long hauls or remote jobsites.
A rear camera provides a clearer view behind the truck, making reversing, parking and hitching simpler and safer by revealing obstacles you might not otherwise see.
Brake assist detects panic stops and applies extra braking force when you need it most, helping shorten stopping distances during sudden emergencies.
Cruise control with steering wheel-mounted controls lets you set and adjust cruising speed without taking your hands off the wheel, reducing fatigue on long drives and smoothing highway travel.
Ventilated front seats circulate cool air to the seating surface so you and your front passenger reach comfort faster on hot days without cranking down the cabin temperature.
The voice-activated integrated navigation system guides you hands-free to destinations and reroutes on the fly, keeping directions clear while you concentrate on driving.
Combining a torquey 6.6L V8, heavy-duty hardware and a thoughtful mix of safety and connectivity features, this 2023 GMC Sierra 2500HD AT4