There are 10 Sierra 2500HD models, eight 3500HD models and six Sierra Denali HD models—including regular cab, extended cab and crew cab body styles offered in 2WD and 4WD, as well as single- and dual-rear-wheel configurations. All are available with either a standard gas V-8 or the powerful Duramax 6.6L turbo-diesel.
- 2500HD maximum payload of 4,212 pounds with the available Performance Package on regular cab long box models (2WD)
- 2500HD conventional towing capacity of 13,000 pounds
- 2500HD fifth-wheel towing capacity of 17,800 pounds
- 3500HD maximum payload of 7,222 pounds
- 3500HD conventional towing capacity of 18,000 pounds
- 3500HD fifth-wheel towing capacity of 23,100 pounds (10,478 kg).
- Bi-fuel compressed natural gas fuel system and 6.0L V-8 bi-fuel engine available on 2500HD extended cab
- Fully boxed, high-strength-steel frames
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