Engine Options & Performance -
Heavy‑duty V8 powertrains: 4.8 L V8 (≈ 280 hp/296 lb‑ft), optional 6.0 L V8 (≈ 323 hp/373 lb‑ft), or 6.6 L Duramax turbo‑diesel V8 (≈ 260 hp/525 lb‑ft).
Payload & Towing -
Payload capacity up to ~3,200 lb (extended-length variant slightly lower).
Towing capacity up to 10,000 lb when properly equipped.
Cargo Capacity -
Standard-wheelbase models offer ~270 cu ft of space; extended-wheelbase versions increase to ~314 cu ft.
Dimensions & Build -
Available in two lengths: 135 in (standard) or 155 in (extended) wheelbase; overall lengths ~224–244 in; height ~81–82.
RWD; AWD available on some 1500-series (less common in 2500).
Interior & Configurations -
Seats for two: driver and front passenger; rugged vinyl upholstery standard, cloth or optional upgrades available.
Standard features include air conditioning, trip computer, side-swing 60/40 doors; optional packages add remote start, cruise control, Bluetooth, bulkhead partition, and sliding side doors.
Full-featured tech options on LT-level trims—power windows, keyless entry, upgraded stereo, OnStar available.