Measurements
Cargo dimensions.
12th generation (T1XX), U.S. market, 2021+ model years; dimensions checked against 2024 model-year sources.
| Layout | Length | Width | Height | Opening W | Opening H | Volume (published) |
|---|---|---|---|---|---|---|
| All seats upright (behind 3rd row) | 38.2"Researched | 49.4"Researched | ≈31"Estimated | ≈49"Estimated | ≈40"Estimated | 41.5 cu ft |
| 3rd row folded (2nd row upright) | ≈66"Approximate | 49.4"Researched | ≈31"Estimated | ≈49"Estimated | ≈40"Estimated | 93.8 cu ft |
| Rear seat area (2nd row)Passenger space, low confidence | ≈33.1"Estimated | ≈58.3"Estimated | ≈37"Estimated | ≈37.8"Estimated | ≈41.3"Estimated | – |
≈ marks an estimated or approximate value. Opening sizes are the catalog figures before the calculator's 5% safety allowance.
Not modeled yet
- Second and third rows folded together (the longest cargo floor) — no verified length yet.
- Separate 7-, 8- or 9-seat layouts — dimensions are for the standard layout.
How the calculator checks a fit
- The opening check and the interior check run independently: an item must clear the opening with one face and fit inside the modeled space.
- The solver takes a 5% safety allowance off the opening. The opening sizes shown above are the catalog figures before that allowance.
- Tilted placements inside the cargo space are checked in 3D. The loading path is not simulated: turning after entry, angling through the opening, wheel wells, roof taper and the seat-fold step are not modeled.
Sources recorded for these dimensions
Measure your own Chevrolet Suburban
When the fit is close, record your vehicle's actual opening, seat configuration, and any packaging or loading-path limits alongside your ItemFits result. Chevy Truck Expert publishes a printable worksheet for writing those measurements down: Suburban Cargo Fit Measurement Record (opens in a new tab).
What fits
What fits in a Chevrolet Suburban?
Each result below is computed by the same solver as the calculator, against the layouts in the table above.
Measure smart
What to measure.
Four numbers decide nearly every fit check. Get these right and the rest follows.
- 01The opening width and height of the trunk or liftgate, not just the total volume, since the opening is what an item has to pass through.
- 02The load-floor length behind the rear seats, then again with the seats folded.
- 03The height available under the roofline or parcel shelf, measured at the lowest point.
- 04Your item at its widest point, including feet, handles, and packaging.
Don't make these
Common mistakes.
Most “it didn't fit” stories trace back to one of these oversights.
- ⚠Trusting the cubic-foot figure and assuming a wide item will fit, when the opening is narrower than the item.
- ⚠Measuring the cargo floor but forgetting the roofline tapers toward the opening.
- ⚠Ignoring that a full-size spare, subwoofer, or hybrid battery eats into the quoted volume.
- ⚠Folding only one seat when the long item needs the full flat load floor.
Frequently asked
Questions we keep getting.
What are the Chevrolet Suburban cargo dimensions?
For the 12th generation (T1XX), U.S. market, 2021+ model years, ItemFits models two cargo layouts. All seats upright (behind 3rd row): a floor about 38.2 in long and 49.4 in wide; Chevrolet publishes 41.5 cu ft for this layout. 3rd row folded (2nd row upright): about 66 in long (approximate, from an owner measurement); Chevrolet publishes 93.8 cu ft for this layout. Cargo height (about 31 in) and the liftgate opening (about 49 × 40 in) are estimates, because GM does not publish them.
01Does the calculator cover the Suburban with the second and third rows folded?
Not yet. We don't have a verified load-floor length for the second-and-third-rows-folded layout, so the calculator checks only the two layouts above and names the one it used. Folding the second row as well gives a longer floor than our check assumes.
02Which Suburban model years does this cover?
12th generation (T1XX), U.S. market, 2021+ model years. The dimensions were checked against 2024 model-year sources; a result for a later model year is labeled as not separately verified. Earlier Suburbans are a different generation we don't have dimensions for, so the calculator labels any result for those years as an approximation based on the 2021+ model.
03How does the calculator decide whether something fits?
It runs two independent checks: whether one face of the item clears the liftgate opening (with a 5% safety allowance taken off the opening), and whether the item fits inside the cargo space, including tilted placements. It does not simulate the loading path itself — turning the item once inside, angling it through the opening, wheel wells, roof taper, or the step where the seats fold — so treat a close result as a reason to measure.
04
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