Summit White 2025 GMC Sierra 3500HD SLT 4WD
When the job demands more??more power, more capability, more confidence??this Sierra 3500HD SLT steps up without hesitation. Built for the toughest conditions the Pacific Northwest can throw at it, this heavy-duty truck is ready for serious towing, hauling, and off-road work while still delivering everyday comfort.
At the heart of it all is the legendary Duramax 6.6L V8 Turbodiesel, paired with a 10-speed automatic transmission. This combination delivers massive torque and smooth power delivery, making heavy trailers, steep grades, and long hauls feel controlled and composed. With 4WD and the X31 Off-Road Package, it??s equally at home on rugged terrain, job sites, or backcountry trails.
Inside, the SLT trim brings a refined balance of work-ready durability and premium comfort. Heated front seats and heated second-row outboard seats keep everyone comfortable in colder Northwest weather, while the power sliding rear window adds convenience and airflow when needed. The SLT Preferred Package builds on that with thoughtful upgrades that make daily driving easier and more enjoyable.
Adaptive cruise control adds confidence on long highway stretches, while hill descent control and off-road suspension help manage tougher terrain with ease. Steering wheel-mounted controls and a clean, functional layout keep everything within reach so you can stay focused on the road??or the job at hand.
This Sierra doesn??t just work hard??it works smart, blending heavy-duty capability with modern features that make it easier to live with day in and day out.
Think of it as the Hulk of heavy-duty trucks??immensely powerful, built to handle the toughest tasks, and always ready when things get serious.
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