The 2020 GMC Sierra 1500 Base Regular Cab Long Box's towing capacity is rated at 4536 kg (10000 lbs) / 1034 kg (2280 lbs). The Sierra 1500 Base Regular Cab Long Box wheels measure 17-inch in diameter.
The 2020 GMC Sierra 2500HD Base Regular Cab Long Box's towing capacity is rated at 8392 kg (18501 lbs) / 1767 kg (3895 lbs). The Sierra 2500HD Base Regular Cab Long Box wheels measure 17-inch in ...
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