GMC sells more than one truck. Each nameplate below has its own model years, and those years do not share a towing number unless a source says they do.
GMC's half-ton, the corporate twin of the Silverado 1500. A Silverado chart cell is not treated as a Sierra rating.
Cited years: 2009, 2010, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
GMC's 3/4-ton. Conventional and gooseneck maxima are cited separately when a source splits them.
Cited years: 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
GMC's 1-ton, including dual-rear-wheel models.
Cited years: 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Electric Sierra. The 2026 OEM chart separates seven trim and battery combinations; longer battery range does not automatically mean a higher tow rating.
Cited years: 2024, 2026
GMC's midsize pickup, off the U.S. market in 2013 and 2014. It shares a platform with the Colorado; it does not automatically share a towing cell.
Cited years: 2021, 2022, 2025, 2026
Electric pickup. Motor count changes the towing rating, so a trim without a citation is not given the 2X number.
Cited years: 2024, 2025, 2026