5.2 ft (short box)
6.2 ft (long box)
5 ft (short box)
6 ft (long box)
By make
GMC pickups
Bed lengths, generations and specs for every GMC truck — pick a model to see what tonneau covers fit.
5 ft
5.8 ft
6.6 ft
8.2 ft
6.5 ft
8.0 ft
6.9 ft
8.2 ft
6.6 ft
8 ft
6.5 ft
6.9 ft
8.2 ft
6.6 ft
8 ft
5.9 ft
GMC truck bed sizes — current models
Our database covers 6 current GMC pickups. Bed lengths run from 60.1" on the Hummer EV Pickup to 98.3" on the Sierra 2500HD. A tonneau cover is sold per bed length, so the inch figure — not the marketing "ft" name — is what to match when you shop.
| Model | Current gen | Bed lengths | Max towing | Max payload |
|---|---|---|---|---|
| Canyon | 2023–2026 | 5.2 ft (short box) (61.7") | 7,700 lb | 1,640 lb |
| Hummer EV Pickup | 2022–2026 | 5 ft (60.1") | 12,100 lb | 1,300 lb |
| Sierra 1500 | 2019–2026 | 5.8 ft (69.9"), 6.6 ft (79.4"), 8.2 ft (98.2") | 13,300 lb | 2,240 lb |
| Sierra 2500HD | 2020–2026 | 6.9 ft (82.2"), 8.2 ft (98.3") | 22,500 lb | 3,979 lb |
| Sierra 3500HD | 2020–2026 | 6.9 ft (82.2"), 8.2 ft (98.3") | 36,000 lb | 7,442 lb |
| Sierra EV | 2024–2026 | 5.9 ft (70.6") | 12,500 lb | 2,250 lb |
Compare every pickup's bed size → · Check which covers fit your GMC →
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Fitment & bed size
Will it fit, and what size do you need.
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