The average asking price for a used 2021 GMC Canyon Crew Cab is $27,568, with 66,876 miles on average, across 18 cars for sale at U.S. dealers as of Nov 10, 2026.
Used 2021 GMC Canyon Crew Cabs for sale at U.S. dealers ask $27,568 on average (half ask less than $27,790), across 18 cars. The cars for sale have 66,876 miles on average: one with fewer miles is worth more, and one with more is worth less. To check one car's price against cars of its trim and mileage, enter its VIN in OttoQuest's free Deal Check.
The 2021 asks $27,568 on average with 66,876 miles; the 2020 asks $25,470 with 72,087 miles, and the 2022 asks $28,907 with 54,714 miles.
Used and certified cars for sale at US dealers, each car counted once. Days listed are the dealer’s own days on market where they publish it. Price moves compare the same cars at both ends of the window.
