GMC Sierra 1500 2015–2018 vs GMC Sierra 2019–2026 size comparison
GMC Sierra 2019–2026 is 61 mm (1.0%) longer than GMC Sierra 1500 2015–2018. It is 31 mm (1.5%) wider, 34 mm (1.8%) taller and 100 mm (2.7%) longer in wheelbase. Boot space with the seats up is 1512 L and 1781 L (+269 L).
| Dimension | GMC Sierra 1500 2015–2018 | GMC Sierra 2019–2026 | Difference |
|---|---|---|---|
| Length | 5829 mm | 5890 mm | +61 mm (+1.0%) |
| Width | 2032 mm | 2063 mm | +31 mm (+1.5%) |
| Height | 1884 mm | 1918 mm | +34 mm (+1.8%) |
| Wheelbase | 3645 mm | 3745 mm | +100 mm (+2.7%) |
| Boot | 1512 L | 1781 L | +269 L |
GMC Sierra 1500 2015–2018 dimensions · GMC Sierra 2019–2026 dimensions