CoPilot AI-Assisted Car Shopping

 New Search
 Save
 Sort
 Share

Used 2018 GMC Sierra 2500HD for Sale in Denver, CO

Sierra 2500HDs for Sale at Dealers

Filters
Price
Year
Mileage
Trim
2019 GMC Sierra 2500HD Denali 4WD photo
1
Price Drop
2019 GMC Sierra 2500HD Denali 4WD Littleton, CO
Black 6.6L V8 Engine
$51,796 56.2k miles
•••

#1 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • $501 Price Drop
  • Great Price - $5,803 Below Market
  • Includes $9,485 Premium Upgrades
More details
2018 GMC Sierra 2500HD Denali 4WD photo
2
Price Drop
2018 GMC Sierra 2500HD Denali 4WD Colorado Springs, CO
Silver 6.6L V8 Engine
$52,710 44.6k miles
•••

#2 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • $300 Price Drop
  • Great Price - $5,258 Below Market
  • Includes $8,188 Premium Upgrades
More details
2020 GMC Sierra 2500HD  4WD photo
3
Price Drop
2020 GMC Sierra 2500HD 4WD Littleton, CO
White 6.6L V8 Engine
$28,991 104k miles
•••

#3 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • $999 Price Drop
  • Great Price - $11,280 Below Market
  • Includes $2,341 Premium Upgrades
More details
2017 GMC Sierra 2500HD Denali 4WD photo
4
2017 GMC Sierra 2500HD Denali 4WD Franktown, CO
Gray 6.0L V8 Engine
$39,950 126.4k miles
•••

#4 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • Great Price - $4,878 Below Market
  • Includes $6,988 Premium Upgrades
  • CARFAX: Clean Title
More details
2018 GMC Sierra 2500HD  4WD photo
5
Price Drop
2018 GMC Sierra 2500HD 4WD Englewood, CO
White 6.6L V8 Engine
$26,999 114.8k miles
•••

#5 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • $2,000 Price Drop
  • Great Price - $4,657 Below Market
  • Includes $6,329 Premium Upgrades
More details
2017 GMC Sierra 2500HD Denali 4WD photo
6
2017 GMC Sierra 2500HD Denali 4WD Littleton, CO
White 6.6L V8 Engine
$40,311 120.1k miles
•••

#6 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • Great Price - $4,568 Below Market
  • Includes $6,476 Premium Upgrades
  • CARFAX: Clean Title, Not a rental or commercial vehicle
More details
2018 GMC Sierra 2500HD SLT 4WD photo
7
Price Drop
2018 GMC Sierra 2500HD SLT 4WD Aurora, CO
Gray 6.6L V8 Engine
$42,888 85.5k miles
•••

#7 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • $889 Price Drop
  • Great Price - $3,840 Below Market
  • Includes $10,227 Premium Upgrades
More details
2016 GMC Sierra 2500HD Denali 4WD photo
8
2016 GMC Sierra 2500HD Denali 4WD Brighton, CO
Gray 6.0L V8 Engine
$39,488 121.8k miles
•••

#8 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • Great Price - $3,213 Below Market
  • Includes $6,923 Premium Upgrades
  • CARFAX: One Owner, Clean Title
More details
2019 GMC Sierra 2500HD SLT 4WD photo
9
2019 GMC Sierra 2500HD SLT 4WD Brighton, CO
White 6.6L V8 Engine
$49,488 54.4k miles
•••

#9 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • Good Price - $2,818 Below Market
  • Includes $13,047 Premium Upgrades
  • CARFAX: One Owner, Clean Title, Not a rental or commercial vehicle
More details
2020 GMC Sierra 2500HD Denali 4WD photo
10
Price Drop
2020 GMC Sierra 2500HD Denali 4WD Denver, CO
Gray 6.6L V8 Engine
$62,800 23.3k miles
•••

#10 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA+” Buy

  • $1,200 Price Drop
  • Good Price - $1,983 Below Market
  • Includes $15,632 Premium Upgrades
More details
2019 GMC Sierra 2500HD Denali 4WD photo
11
Price Drop
2019 GMC Sierra 2500HD Denali 4WD Littleton, CO
White 6.6L V8 Engine
$48,524 84.2k miles
•••

#11 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA” Buy

  • $56 Price Drop
  • Good Price - $2,882 Below Market
  • Includes $8,165 Premium Upgrades
More details
2020 GMC Sierra 2500HD Denali 4WD photo
12
Price Drop
2020 GMC Sierra 2500HD Denali 4WD Littleton, CO
Black 6.6L V8 Engine
$57,832 55.7k miles
•••

#12 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA” Buy

  • $168 Price Drop
  • Fair Price - $395 Below Market
  • Includes $12,138 Premium Upgrades
More details
2017 GMC Sierra 2500HD SLT 4WD photo
13
Price Drop
2017 GMC Sierra 2500HD SLT 4WD Colorado Springs, CO
Black 6.6L V8 Engine
$46,977 70k miles
•••

#13 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA” Buy

  • $1,020 Price Drop
  • Fair Price - $191 Below Market
  • Includes $10,383 Premium Upgrades
More details
2020 GMC Sierra 2500HD Denali 4WD photo
14
Price Drop
2020 GMC Sierra 2500HD Denali 4WD Franktown, CO
6.6L V8 Engine
$61,200 25.9k miles
•••

#14 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA” Buy

  • $2,750 Price Drop
  • Fair Price - $101 Below Market
  • Includes $10,057 Premium Upgrades
More details
2019 GMC Sierra 2500HD Denali 4WD photo
15
2019 GMC Sierra 2500HD Denali 4WD Colorado Springs, CO
Gray 6.6L V8 Engine
$52,698 71.7k miles
•••

#15 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA-” Buy

  • Fair Price - $1,549 Below Market
  • Includes $8,553 Premium Upgrades
  • CARFAX: Clean Title, Not a rental or commercial vehicle
More details
2020 GMC Sierra 2500HD Denali 4WD photo
16
Price Drop
2020 GMC Sierra 2500HD Denali 4WD Cheyenne, WY
Gray 6.6L V8 Engine
$50,995 105.5k miles
•••

#16 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA-” Buy

  • $1,000 Price Drop
  • Fair Price - $1,546 Below Market
  • Includes $11,087 Premium Upgrades
More details
2016 GMC Sierra 2500HD SLT 4WD photo
17
2016 GMC Sierra 2500HD SLT 4WD Longmont, CO
Gray 6.6L V8 Engine
$35,673 137k miles
•••

#17 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s anA-” Buy

  • Fair Price - $1,091 Below Market
  • Includes $7,830 Premium Upgrades
  • CARFAX: One Owner, Clean Title, Not a rental or commercial vehicle
More details
2017 GMC Sierra 2500HD Denali 4WD photo
18
Price Drop
2017 GMC Sierra 2500HD Denali 4WD Fort Collins, CO
Gray 6.6L V8 Engine
$47,871 71.9k miles
•••

#18 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • $100 Price Drop
  • Great Price - $6,979 Below Market
  • Includes $8,776 Premium Upgrades
More details
2016 GMC Sierra 2500HD Denali 4WD photo
19
2016 GMC Sierra 2500HD Denali 4WD Colorado Springs, CO
Red 6.0L V8 Engine
$34,999 92.1k miles
•••

#19 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • Great Price - $6,270 Below Market
  • Includes $1,290 Premium Upgrades
  • CARFAX: Clean Title
More details
2019 GMC Sierra 2500HD SLE 4WD photo
20
2019 GMC Sierra 2500HD SLE 4WD Longmont, CO
White 6.0L V8 Engine
$21,999 156.1k miles
•••

#20 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • Great Price - $3,590 Below Market
  • Includes $1,542 Premium Upgrades
  • CARFAX: One Owner, Clean Title, Not a rental or commercial vehicle
More details
2020 GMC Sierra 2500HD Denali 4WD photo
21
Price Drop
2020 GMC Sierra 2500HD Denali 4WD Colorado Springs, CO
Gray 6.6L V8 Engine
$56,491 53.5k miles
•••

#21 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • $298 Price Drop
  • Good Price - $2,301 Below Market
  • Includes $12,322 Premium Upgrades
More details
2016 GMC Sierra 2500HD  4WD photo
22
2016 GMC Sierra 2500HD 4WD Boulder, CO
Black 6.6L V8 Engine
$35,699 44.5k miles
•••

#22 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • Fair Price - $690 Below Market
  • Includes $7,684 Premium Upgrades
  • CARFAX: Clean Title
More details
2020 GMC Sierra 2500HD Denali 4WD photo
23
Price Drop
2020 GMC Sierra 2500HD Denali 4WD Henderson, CO
White 6.6L V8 Engine
$56,160 67.3k miles
•••

#23 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB” Buy

  • $375 Price Drop
  • Fair Price - $1,728 Below Market
  • Includes $12,715 Premium Upgrades
More details
2018 GMC Sierra 2500HD  4WD photo
24
Price Drop
2018 GMC Sierra 2500HD 4WD Denver, CO
White 6.0L V8 Engine
$27,624 99.5k miles
•••

#24 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB” Buy

  • $698 Price Drop
  • Fair Price - $158 Below Market
  • Includes $1,972 Premium Upgrades
More details
2016 GMC Sierra 2500HD Denali 4WD photo
25
2016 GMC Sierra 2500HD Denali 4WD Brighton, CO
Blue 6.6L V8 Engine
$32,488 187.8k miles
•••

#25 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB” Buy

  • Fair Price - $733 Above Market
  • Includes $4,087 Premium Upgrades
  • CARFAX: Clean Title
More details
1-25 of 35 results

2018 GMC Sierra 2500HD

Three-Quarter-Ton Truck
Seats
5
NHTSA Rating Summary
Copilot Rating
Dimensions

© 2025 CoPilot. All Rights Reserved.