CoPilot AI-Assisted Car Shopping

 New Search
 Save
 Sort
 Share

Used 2021 GMC Terrain for Sale in Denver, CO

Terrains for Sale at Dealers

Filters
Price
Year
Mileage
Trim
2021 GMC Terrain SLT AWD photo
Price Drop
2021 GMC Terrain SLT AWD • Denver, CO
Blue • 1.5L Engine
$14,299 • 99k miles
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • $200 Price Drop
  • Great Price - $1,433 Below Market
  • Includes $230 Premium Upgrades
More details
2023 GMC Terrain Denali AWD photo
Price Drop
2023 GMC Terrain Denali AWD • Aurora, CO
Brown • 1.5L I4 Engine
$29,470 • 32.3k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • $418 Price Drop
  • Fair Price - $744 Above Market
  • Includes $1,285 Premium Upgrades
More details
2020 GMC Terrain SLT AWD photo
Price Drop
2020 GMC Terrain SLT AWD • Denver, CO
White • 1.5L I4 Engine
$15,599 • 76.8k miles
•••

Not Ranked

CoPilot AI: It’s a “B” Buy

  • $300 Price Drop
  • Fair Price - $293 Below Market
  • Motivation to Negotiate - Very High
More details
2022 GMC Terrain SLT AWD photo
2022 GMC Terrain SLT AWD • Aurora, CO
White • 1.5L Engine
$19,240 • 83.4k miles
•••

Not Ranked

CoPilot AI: It’s a “C” Buy

  • Motivation to Negotiate - Increasing
  • Dealer Rating - 4.2 stars
More details
2022 GMC Terrain SLT AWD photo
Price Drop
2022 GMC Terrain SLT AWD • Aurora, CO
White • 1.5L Engine
$28,540 • 10.4k miles
•••

Not Ranked

CoPilot AI: It’s a “C” Buy

  • $300 Price Drop
  • Includes $1,900 Premium Upgrades
  • CARFAX: One Owner
More details
2020 GMC Terrain SLT AWD photo
Price Drop
2020 GMC Terrain SLT AWD • Denver, CO
White • 1.5L I4 Engine
$16,788 • 67.8k miles
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • $211 Price Drop
  • Fair Price - $455 Above Market
  • Motivation to Negotiate - Very High
More details
2019 GMC Terrain SLE AWD photo
Price Drop
2019 GMC Terrain SLE AWD • Denver, CO
Blue • 1.5L I4 Engine
$16,988 • 52.7k miles
•••

Not Ranked

CoPilot AI: It’s a “C+” Buy

  • $1,000 Price Drop
  • CARFAX: One Owner
  • Motivation to Negotiate - Very High
More details
2019 GMC Terrain Denali AWD photo
New Find
2019 GMC Terrain Denali AWD • Denver, CO
Red • 2.0L I4 Engine
$16,950 • 53.1k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $3,015 Below Market
  • Includes $636 Premium Upgrades
  • CARFAX: One Owner
More details
2020 GMC Terrain SLE AWD photo
New Find
2020 GMC Terrain SLE AWD • Denver, CO
White • 1.5L I4 Engine
$10,950 • 99.8k miles
•••

Not Ranked

CoPilot AI: It’s an “A” Buy

  • Great Price - $2,937 Below Market
  • Includes $135 Premium Upgrades
  • Dealer Rating - 4.4 stars
More details
2022 GMC Terrain SLT AWD photo
Price Drop
2022 GMC Terrain SLT AWD • Denver, CO
White • 1.5L Engine
$17,900 • 52.9k miles
•••

Not Ranked

CoPilot AI: It’s an “A” Buy

  • $1,050 Price Drop
  • Great Price - $3,242 Below Market
  • Includes $403 Premium Upgrades
More details
2021 GMC Terrain SLT AWD photo
2021 GMC Terrain SLT AWD • Denver, CO
White • 1.5L Engine
$14,200 • 88.4k miles
•••

Not Ranked

CoPilot AI: It’s an “A” Buy

  • Great Price - $2,218 Below Market
  • Includes $241 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2021 GMC Terrain SLT AWD photo
2021 GMC Terrain SLT AWD • Denver, CO
White • 1.5L Engine
$16,950 • 38.4k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $3,596 Below Market
  • Includes $300 Premium Upgrades
  • Motivation to Negotiate - High
More details
2021 GMC Terrain SLE AWD photo
2021 GMC Terrain SLE AWD • Denver, CO
Blue • 1.5L Engine
$18,999 • 65k miles
•••

Not Ranked

CoPilot AI: It’s a “C+” Buy

  • Includes $1,276 Premium Upgrades
  • Motivation to Negotiate - Very High
  • Below Average Mileage
More details
2021 GMC Terrain SLT AWD photo
Price Drop
2021 GMC Terrain SLT AWD • CO
White • 1.5L Engine
$23,121 • 21.9k miles • Certified
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • $294 Price Drop
  • Good Price - $1,409 Below Market
  • Includes $1,869 Premium Upgrades
More details
2021 GMC Terrain SLT FWD photo
Price Drop
2021 GMC Terrain SLT FWD • Englewood, CO
Black • 1.5L Engine
$15,487 • 116.7k miles
•••

Not Ranked

CoPilot AI: It’s a “D” Buy

  • $1,000 Price Drop
  • Motivation to Negotiate - Very High
  • Dealer Rating - 4.5 stars
More details
2021 GMC Terrain SLT FWD photo
New Find
2021 GMC Terrain SLT FWD • Englewood, CO
White • 1.5L Engine
$19,998 • 58.9k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $1,717 Below Market
  • Includes $2,509 Premium Upgrades
  • CARFAX: One Owner
More details
2022 GMC Terrain SLE AWD photo
2022 GMC Terrain SLE AWD • Lakewood, CO
Blue • 1.5L Engine
$19,500 • 16.1k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $2,214 Below Market
  • Includes $1,140 Premium Upgrades
  • Motivation to Negotiate - High
More details
2019 GMC Terrain SLE AWD photo
2019 GMC Terrain SLE AWD • Englewood, CO
Blue • 1.5L I4 Engine
$10,499 • 79k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $5,627 Below Market
  • Includes $1,199 Premium Upgrades
  • Motivation to Negotiate - Very High
More details
2020 GMC Terrain SLE AWD photo
New Find
2020 GMC Terrain SLE AWD • Thornton, CO
Black • 1.5L I4 Engine
$15,997 • 70.8k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $1,327 Below Market
  • Includes $720 Premium Upgrades
  • CARFAX: One Owner
More details
2023 GMC Terrain SLT AWD photo
Price Drop
2023 GMC Terrain SLT AWD • Northglenn, CO
Black • 1.5L I4 Engine
$22,039 • 70.5k miles
•••

Not Ranked

CoPilot AI: It’s a “B” Buy

  • $228 Price Drop
  • Fair Price - $135 Above Market
  • Includes $386 Premium Upgrades
More details
2021 GMC Terrain SLT AWD photo
Price Drop
2021 GMC Terrain SLT AWD • Englewood, CO
White • 1.5L Engine
$14,990 • 100.2k miles
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • $500 Price Drop
  • Good Price - $464 Below Market
  • Includes $227 Premium Upgrades
More details
2020 GMC Terrain SLE AWD photo
Price Drop
2020 GMC Terrain SLE AWD • Lakewood, CO
White • 1.5L I4 Engine
$14,765 • 99.9k miles
•••

Not Ranked

CoPilot AI: It’s a “C+” Buy

  • $342 Price Drop
  • Includes $949 Premium Upgrades
  • Motivation to Negotiate - High
More details
2022 GMC Terrain SLE AWD photo
Price Drop
2022 GMC Terrain SLE AWD • Centennial, CO
Blue • 1.5L Engine
$18,000 • 76.7k miles
•••

Not Ranked

CoPilot AI: It’s a “B” Buy

  • $500 Price Drop
  • Fair Price - $511 Above Market
  • Motivation to Negotiate - Very High
More details
2020 GMC Terrain Denali AWD photo
New Find
2020 GMC Terrain Denali AWD • Centennial, CO
Gray • 2.0L I4 Engine
$20,497 • 62.6k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $2,800 Below Market
  • Includes $1,756 Premium Upgrades
  • Very Low Mileage
More details
2023 GMC Terrain SLT AWD photo
Price Drop
2023 GMC Terrain SLT AWD • Centennial, CO
White • 1.5L I4 Engine
$19,997 • 64.7k miles
•••

Not Ranked

CoPilot AI: It’s a “B” Buy

  • $500 Price Drop
  • Good Price - $974 Below Market
  • Includes $271 Premium Upgrades
More details
1-25 of 59 results

2021 GMC Terrain

Compact Crossover
Seats
5
Fuel Economy
25City MPG
30Hwy MPG
NHTSA Rating Summary
Copilot Rating
Dimensions

© 2026 CoPilot. All Rights Reserved.