SPEC HIGHLIGHTS
PROVEN POWERTRAINS AND CAPABILITY

6.6L V8 GAS ENGINE
- 401 HP
- 464 lb.-ft. of torque
- Compression Ratio of 10.75:1
- Valve Train: overhead-valve, two valves per cylinder, variable valve timing
- Paired with a 6-speed Automatic Transmission

AVAILABLE 6.6L DURAMAX® TURBO-DIESEL V8 ENGINE
- 445 HP
- 910 lb.-ft. of torque
- Compression Ratio of 16:1
- Diesel Exhaust Brake System
- Valve Train: overhead-valve, four valves per cylinder
- Factory-installed diesel engine after-run cooling function
- Paired with the Allison® 10-Speed Automatic Transmission

AVAILABLE ALLISON 10-SPEED AUTOMATIC TRANSMISSION
The Allison 10-speed Automatic Transmission features closer gear spacing that allows the engine to operate in an optimal range at all times with varying load and terrain conditions. An available integrated Power Takeoff (PTO) feature is offered straight from the factory on the Allison transmission, so you can transfer power from the engine to aftermarket equipment, such as a generator or hydraulic pump†.
Shown with equipment from independent suppliers which is not covered by the GM New Vehicle Limited Warranty. GM is not responsible for the safety or quality of independent supplier alterations.

STAY CONNECTED
The advanced technology inside the Sierra 3500 HD Chassis Cab commercial truck helps keep you confidently connected to help you get the job done while on the road.

ONSTAR VEHICLE INSIGHTS™
See more, know more and do more with OnStar Vehicle Insights†. Get real-time vehicle information that can help you improve route planning, identify select service needs before they become an issue, get driver behavior data and more. Plus, OnStar Vehicle Insights uses embedded OnStar® hardware, so it’s available in most 2015 and newer GM vehicles and is ready to be activated. It’s the simple way to gain real-time insights to help your business maximize operational efficiency and optimize productivity. Learn more about OnStar Vehicle Insights.
CUSTOM UPFITS†
Sierra HD Chassis Cabs provide a strong foundation for a wide variety of aftermarket upfits to meet your specific business needs.
DUMP TRUCK

Upfit† Options Include:
- Dump Bed
- Flatbed
- Utility/Service Body
- Platform/Stake Body
- Snowplow/Spreader
- Ambulance/Rescue Body
VIEW INVENTORY
FLATBED

Specialty Vehicle Manufacturers
To help make the upfitting process easier, General Motors can recommend specialty vehicle manufacturers who are experienced with General Motors products and specialty applications.
The site being linked to is provided by third-party resources to help you locate products with solutions that could work for your business. The vehicles on the site show equipment from an independent supplier which is not covered by the GM New Vehicle Warranty. GM is not responsible for the safety or quality of independent supplier alterations.