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Gear Guide · Chevrolet / GMC Silverado 2500HD / 3500HD

What Fits in a Chevrolet / GMC Silverado 2500HD / 3500HD Bed?

The real bed dimensions, payload, and wheel-arch clearances for the Chevrolet Silverado and GMC Sierra 2500HD / 3500HD — and exactly what overland gear you can load. Below is a to-scale 3D model of the bed, built from measured data.

Chevrolet Silverado / GMC Sierra 2500HD / 3500HD
Silverado / Sierra HD Bed · To-Scale 3D Model Measured data

Drawn to scale from measured cargo dimensions. Wheel arches and usable floor shown in orange.

The Numbers

Measured cargo-area dimensions for the T1xx · 6'10" (2020–). Every gear-fit call on this page is computed from these.

Dimensions are approximate and sourced from measured references — verify against your exact model year and trim before purchasing gear. Payload includes passengers and accessories; check your door-jamb sticker.

What Actually Fits

Payload isn't usually the limit — geometry is. Here's a realistic overland load against the T1xx · 6'10" (2020–)'s 1701 kg (3,750 lb) payload budget.

Sample overland build

    The real constraint is width, not weight. The Silverado / Sierra HD's flat floor is about 1295 mm (51.0 in) between the wheel arches and the arches rise ~215 mm (8.5 in) off the floor. Gear narrower than that stacks flat; anything wider has to sit above the arch line. That's the number that decides your build — and it's what the Kitchen Cube is engineered around.

    Built for This Bed

    Algorithm Overland Kitchen Cube — modular aluminum camp kitchen
    Algorithm Overland · Kitchen Cube

    The Kitchen Cube is a modular, aircraft-grade aluminum camp kitchen that packs down to a compact 12-inch (305 mm) cube to live in your truck bed, and deploys on the tailgate.

    In the Silverado / Sierra HD, that packed cube sits flat on the floor between the wheel arches with about 10.4 in (264 mm) of headroom below the bed rail — it fits with room to spare.

    Join the Waitlist →

    Exact fitment specs ship with the waitlist. Coming 2026.

    Bed Fit FAQ

    What are the Chevrolet / GMC Silverado 2500HD / 3500HD bed dimensions?

    The Chevrolet / GMC Silverado 2500HD / 3500HD (T1xx · 6'10" (2020–)) measures about 2090 × 1814 × 569 mm (82.3 × 71.4 × 22.4 in), with roughly 1295 mm (51.0 in) of flat floor between the wheel arches. Figures are approximate — verify against your exact trim before buying gear.

    How much can a Chevrolet / GMC Silverado 2500HD / 3500HD carry in the bed?

    Payload for the Chevrolet / GMC Silverado 2500HD / 3500HD is about 1701 kg (3,750 lb) — but that figure includes passengers and accessories, not just bed cargo. Budget conservatively and check the door-jamb sticker on your specific vehicle.

    Will a fridge and drawer system fit in a Silverado / Sierra HD bed?

    Most 40–75L overland fridges (roughly 445–935 mm long) fit ahead of the wheel wells, and drawer systems up to about 1295 mm wide fit on the flat floor between the arches. The arches rise about 215 mm (8.5 in) off the floor. Anything wider than the floor must sit above that line.

    Does the Kitchen Cube fit a Chevrolet / GMC Silverado 2500HD / 3500HD?

    Yes. The Kitchen Cube packs down to a compact 12-inch (305 mm) cube, so it sits easily on the flat floor between the wheel arches of the Silverado / Sierra HD, with room to spare. Join the waitlist for early access.