New GMC Sierra diesel trucks for sale in Kansas City, MO
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GMC Sierra - Duramax Diesel
GMC’s Duramax diesel engines are engineered to deliver sustained low-end torque, improved fuel economy on the highway, and robust reliability for towing and heavy-duty use. Diesel power is an excellent match for drivers who tow frequently, run long routes, or rely on their truck for demanding commercial tasks. Below we detail the diesel choices available across the Sierra line and what each delivers in performance and capability.
Diesel Engine Options
Sierra 1500 — Duramax 3.0L Turbo-Diesel
The Duramax 3.0L Turbo-Diesel is a standout option in the light-duty Sierra 1500 lineup. Standard on AT4 and AT4X and available on SLE, Elevation, SLT, Denali, and Denali Ultimate, this engine offers a compelling blend of power, efficiency, and refinement.
- 305 horsepower
- 495 lb-ft of torque
- Active Thermal Management to help maintain ideal engine temperature under load
- Electrically controlled, variable-geometry turbocharger for responsive acceleration
- 10-speed automatic transmission
- Available max tow up to 13,300 lbs* (requires Double Cab 2WD standard bed, Max Trailering Package, 20" wheels/tires)
GMC Sierra HD — Duramax 6.6L Turbo-Diesel V8 with Allison 10-Speed
The Sierra HD Duramax 6.6L Turbo-Diesel provides commercial-grade capability and torque delivery across a broad rpm range, engineered for the most demanding towing and hauling tasks.
- Up to 470 horsepower paired with 975 lb-ft of torque
- Allison 10-speed automatic transmission for durable, smooth shifting under load
- Exhaust brake to improve control when towing long grades
- Robust turbo vane actuator and strengthened valve train for extreme duty
The 2500 HD is ideal for contractors and frequent haulers needing strong single-rear-wheel towing. The 3500 HD—available in SRW and DRW configurations—steps up for gooseneck and fifth-wheel work, offering industry-leading tow ratings and available trailering technology that makes managing heavy loads easier and safer.
Find Your Next GMC Sierra at Cable Dahmer Buick GMC of Kansas City
Browse our full selection of new GMC trucks to see the latest Sierra models in stock. If you want to dive deeper into heavy-duty capability, learn more about the Sierra HD lineup for specs, towing guides, and available configurations.
Ready to move forward? You can quickly get approved for financing online or value your trade-in to estimate your buying power before you visit. Our sales team is happy to check incoming inventory or help locate the exact trim, cab, or bed you need.
Visit Cable Dahmer Buick GMC of Kansas City to test drive a Sierra, compare engine and trailering options, and get expert help selecting the right truck for the job.