Here is the advertisement for the 2021 GMC Sierra 3500HD SLT:

This powerful 2021 GMC Sierra 3500HD SLT is ready to take on any job you throw its way. Equipped with a Duramax 6.6L V8 Turbodiesel engine and 10-speed automatic transmission, this heavy-duty pickup has the performance and capability to handle your toughest tasks.

- Gooseneck / 5th Wheel Package
- SLT Convenience Package
- Driver Alert Package II
- SLT Preferred Package
- Driver Alert Package I
- Trailer Tire Pressure Monitor Sensors
- Snow Plow Prep/Camper Package
- X31 Off-Road Package

With its rugged design, premium interior, and advanced technology features, this Sierra 3500HD SLT is the perfect choice for those who demand the best. Discover the difference quality craftsmanship and capability can make.

The powerful Duramax diesel engine delivers an exceptional 910 lb-ft of torque, giving you the muscle to tow, haul, and conquer any terrain. The 10-speed automatic transmission provides smooth, responsive shifting for optimal performance and efficiency.

Elevate your driving experience with the SLT Convenience Package, featuring ventilated front seats, rear sliding power window, and Bose premium audio. Stay connected with the 8-inch premium GMC infotainment system and wireless charging.

For added peace of mind, the Driver Alert Packages provide advanced safety technologies like Forward Collision Alert, Lane Departure Warning, and Automatic Emergency Braking. The Trailer Tire Pressure Monitor Sensors and In-Vehicle Trailering System App make towing a breeze.

Whether you're on the job site or the open road, this 2021 GMC Sierra 3500HD SLT is ready to take you further. Schedule a test drive today and experience the power and capability for yourself.