2018 GMC Sierra 3500HD Denali Crew Cab 4WD

Duramax Turbo-Diesel | Onyx Black | Jet Black Leather | Texas-Owned

If you’re looking for a heavy-duty diesel truck with proven capability and a documented ownership history, this 2018 GMC Sierra 3500HD Denali delivers exactly what HD buyers prioritize: Duramax power, Denali-level comfort, and a well-maintained, personal-use background.

Finished in Onyx Black with a Jet Black leather interior, this Denali presents cleanly and confidently. Custom wheels and aggressive all-terrain tires give it a strong, purposeful stance while maintaining the ride quality and road manners expected from a premium HD truck.

Duramax Power & Allison Reliability

At the heart of this Sierra is GMC’s proven 6.6L Duramax Turbo-Diesel V8, paired with the Allison 1000 6-speed automatic transmission—a combination trusted by owners who tow, haul, and rack up miles.

This setup delivers:

Strong low-end torque for heavy towing

Confident passing power on the highway

Smooth, predictable power delivery

Long-term durability under load

Four-wheel drive adds traction and control for job sites, wet conditions, and uneven terrain.

Denali Interior — Built for Long Days

The Denali trim transforms hard work into a comfortable experience:

Heated and ventilated front leather seats

Heated steering wheel

Dual-zone automatic climate control

Premium Denali materials and trim

Quiet, well-insulated cabin

It’s a truck designed to handle long drives and full workdays without feeling like a stripped-down work rig.

Technology & Driver Assistance

Features that support daily driving and trailering duties include:

Touchscreen infotainment system

Navigation capability

Apple CarPlay® & Android Auto™

Bose® premium audio system

Remote start

Front & Rear Park Assist

Rear Vision Camera

Blind Zone Alert & Rear Cross Traffic Alert

Everything is intuitive and designed to reduce fatigue behind the wheel.

Exterior & Utility Highlights

Crew Cab configuration

Custom wheels with all-terrain tires

Heavy-duty bed and chassis components

Integrated trailering hardware

Signature Denali grille and exterior trim

The truck reflects careful ownership and presents as a well-kept HD diesel.

Transparent Ownership History

CARFAX highlights include:

No accidents reported

Personal-use vehicle

25 documented service history records

Texas ownership

63,213 miles

The vehicle has been professionally inspected and drives exactly as expected for a properly maintained Duramax HD.

A Straightforward Experience

At Platinum Chevrolet Cadillac:

No hidden fees

No forced add-ons

No surprises

Your truck. Your decision.

If you’re searching for a Duramax-powered Denali HD with real service history, strong presentation, and the capability to handle serious work or towing, this 2018 GMC Sierra 3500HD Denali is well worth a closer look. Let us know when you’d like to see it—we’ll keep the process clear and straightforward.