2012 GMC Sierra 2500HD Denali Crew Cab 4X4 6.6L Duramax Diesel Allison Transmission One OwnerLuxury meets heavy-duty capability in this exceptional 2012 GMC Sierra 2500HD Denali 4X4. Powered by the legendary 6.6L Duramax Turbo Diesel V8 paired with the renowned Allison automatic transmission, this truck delivers outstanding towing power, reliability, and performance while offering the premium comfort expected from GMC's top-of-the-line Denali package.This is a One-Owner truck that has been well cared for and maintained, showing pride of ownership throughout. Whether you're towing heavy loads, hauling equipment, or simply looking for a dependable diesel truck with luxury features, this Sierra Denali is built to exceed expectations.The Denali trim offers a refined interior with premium leather seating, heated and cooled front seats, heated steering wheel, navigation system, Bose premium audio system, power-adjustable seats, dual-zone climate control, remote start, backup camera, and a host of upscale amenities designed for maximum comfort.The 4X4 drivetrain provides excellent traction and confidence in all weather and road conditions, while the Duramax-Allison combination remains one of the most respected diesel powertrains ever built.Key Features: 6.6L Duramax Turbo Diesel V8 Allison Automatic Transmission Denali Package Four-Wheel Drive (4X4) One Owner Premium Leather Interior Heated & Cooled Front Seats Heated Steering Wheel Navigation System Bose Premium Sound System Backup Camera Remote Start Power Adjustable Front Seats Dual-Zone Climate Control Heavy-Duty Towing Package Premium Denali Wheels Crew Cab ConfigurationFinding a One-Owner Duramax Denali in this condition is becoming i