The *2025 GMC Sierra 3500HD SLT Diesel* is engineered for exceptional heavy-duty performance, making it an ideal choice for towing, hauling, and demanding job-site tasks. Powered by Duramax® 6.6L Turbo-Diesel V8 engine paired with the Allison® 10-speed automatic transmission, it delivers impressive torque, confident towing capability, and reliable performance under load. Inside, the SLT trim offers a refined cabin with premium materials, advanced technology, and driver-focused features designed for comfort and convenience. Combining professional-grade capability with upscale amenities, the 2025 Sierra 3500HD SLT Diesel is built to tackle the toughest jobs while providing a smooth and comfortable ride.P.S...Sometimes texting is easier. Text (or call) 306-801-9090 for fast answers at your fingertips!Dealer License #914248Disclaimer: All prices are plus taxes & fees. See dealer for Details. Dealer Permit # 914248