CoPilot AI-Assisted Car Shopping

 New Search
 Save
 Sort
 Share

Used 2018 GMC Sierra 2500HD for Sale in Saint Louis, MO

Sierra 2500HDs for Sale at Dealers

Filters
Price
Year
Mileage
Trim
2020 GMC Sierra 2500HD Denali 4WD photo
15
2020 GMC Sierra 2500HD Denali 4WD Springfield, IL
Silver 6.6L V8 Engine
$47,990 123.9k miles
•••

#15 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aC” Buy

  • Includes $9,601 Premium Upgrades
  • Dealer Rating - 4.5 stars
More details
2020 GMC Sierra 2500HD Denali 4WD photo
8
2020 GMC Sierra 2500HD Denali 4WD Collinsville, IL
White 6.6L V8 Engine
$55,995 55.4k miles
•••

#8 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • Fair Price - $968 Above Market
  • Includes $11,715 Premium Upgrades
  • CARFAX: One Owner
More details
2018 GMC Sierra 2500HD Denali 4WD photo
17
2018 GMC Sierra 2500HD Denali 4WD Union, MO
Silver 6.6L V8 Engine
$32,500 208k miles
•••

#17 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aC-” Buy

  • Includes $5,405 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2017 GMC Sierra 2500HD  4WD photo
21
2017 GMC Sierra 2500HD 4WD Fenton, MO
White 6.6L V8 Engine
$26,743 200.1k miles
•••

#21 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aD-” Buy

  • Includes $4,641 Premium Upgrades
  • Motivation to Negotiate - Increasing
  • Dealer Rating - 4.3 stars
More details
2016 GMC Sierra 2500HD Denali 4WD photo
20
2016 GMC Sierra 2500HD Denali 4WD Collinsville, IL
White 6.6L V8 Engine
$42,995 94.7k miles
•••

#20 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aD+” Buy

  • Includes $5,790 Premium Upgrades
  • CARFAX: One Owner
  • Very Low Mileage
More details
2017 GMC Sierra 2500HD Denali 4WD photo
6
2017 GMC Sierra 2500HD Denali 4WD Carbondale, IL
White 6.6L V8 Engine
$44,140 112.9k miles
•••

#6 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • Good Price - $1,835 Below Market
  • Includes $7,363 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2020 GMC Sierra 2500HD  4WD photo
3
2020 GMC Sierra 2500HD 4WD Wentzville, MO
White 6.6L V8 Engine
$31,945 130.6k miles
•••

#3 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • Great Price - $4,047 Below Market
  • Includes $7,788 Premium Upgrades
  • CARFAX: One Owner
More details
2018 GMC Sierra 2500HD Denali 4WD photo
16
Price Drop
2018 GMC Sierra 2500HD Denali 4WD St. Louis, MO
Silver 6.6L V8 Engine
$46,895 113.6k miles
•••

#16 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aC” Buy

  • $100 Price Drop
  • Includes $7,059 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2016 GMC Sierra 2500HD Denali 4WD photo
19
2016 GMC Sierra 2500HD Denali 4WD Collinsville, IL
White 6.0L V8 Engine
$29,995 158k miles
•••

#19 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aD+” Buy

  • Includes $483 Premium Upgrades
  • Dealer Rating - 4.7 stars
More details
2016 GMC Sierra 2500HD Denali 4WD photo
14
Price Drop
2016 GMC Sierra 2500HD Denali 4WD Troy, MO
Black 6.6L V8 Engine
$38,500 122.1k miles
•••

#14 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aC” Buy

  • $500 Price Drop
  • Includes $4,749 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2019 GMC Sierra 2500HD Denali 4WD photo
7
Price Drop
2019 GMC Sierra 2500HD Denali 4WD Wentzville, MO
Silver 6.6L V8 Engine
$52,243 71.4k miles
•••

#7 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • $2,226 Price Drop
  • Fair Price - $635 Below Market
  • Includes $8,573 Premium Upgrades
More details
2020 GMC Sierra 2500HD Denali 4WD photo
9
Price Drop
2020 GMC Sierra 2500HD Denali 4WD St Peters, MO
Black 6.6L V8 Engine
$47,880 112.1k miles
•••

#9 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB” Buy

  • $106 Price Drop
  • Fair Price - $510 Below Market
  • Includes $9,563 Premium Upgrades
More details
2020 GMC Sierra 2500HD Denali 4WD photo
1
2020 GMC Sierra 2500HD Denali 4WD Collinsville, IL
White 6.6L V8 Engine
$47,995 100.6k miles
•••

#1 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • Great Price - $4,542 Below Market
  • Includes $11,089 Premium Upgrades
  • Dealer Rating - 4.7 stars
More details
2016 GMC Sierra 2500HD Denali 4WD photo
12
Price Drop
2016 GMC Sierra 2500HD Denali 4WD St. Louis, MO
Black 6.0L V8 Engine
$35,395 96.6k miles
•••

#12 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB-” Buy

  • $100 Price Drop
  • Fair Price - $706 Above Market
  • Includes $426 Premium Upgrades
More details
2016 GMC Sierra 2500HD  4WD photo
4
2016 GMC Sierra 2500HD 4WD Ellisville, MO
Black 6.6L V8 Engine
$22,927 156.7k miles
•••

#4 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • Great Price - $2,745 Below Market
  • Includes $5,368 Premium Upgrades
  • Dealer Rating - 4.3 stars
More details
2020 GMC Sierra 2500HD Denali 4WD photo
2
Price Drop
2020 GMC Sierra 2500HD Denali 4WD O'Fallon, IL
Silver 6.6L V8 Engine
$49,499 88.9k miles
•••

#2 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • $480 Price Drop
  • Great Price - $4,232 Below Market
  • Includes $10,732 Premium Upgrades
More details
2019 GMC Sierra 2500HD Denali 4WD photo
10
2019 GMC Sierra 2500HD Denali 4WD Centralia, IL
Black 6.6L V8 Engine
$48,998 98.1k miles
•••

#10 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB” Buy

  • Fair Price - $727 Above Market
  • Includes $7,851 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2016 GMC Sierra 2500HD Denali 4WD photo
5
Price Drop
2016 GMC Sierra 2500HD Denali 4WD Springfield, IL
Red 6.6L V8 Engine
$34,995 126.5k miles
•••

#5 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB+” Buy

  • $1,000 Price Drop
  • Great Price - $2,444 Below Market
  • Includes $6,386 Premium Upgrades
More details
2020 GMC Sierra 2500HD Denali 4WD photo
18
Price Drop
2020 GMC Sierra 2500HD Denali 4WD St. Louis, MO
White 6.6L V8 Engine
$45,995 137.1k miles
•••

#18 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aC-” Buy

  • $500 Price Drop
  • Includes $9,318 Premium Upgrades
  • Dealer Rating - 4.7 stars
More details
2020 GMC Sierra 2500HD Denali 4WD photo
11
Price Drop
2020 GMC Sierra 2500HD Denali 4WD St. Louis, MO
Black 6.6L V8 Engine
$39,795 170.4k miles
•••

#11 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aB-” Buy

  • $200 Price Drop
  • Fair Price - $318 Above Market
  • Includes $8,494 Premium Upgrades
More details
2016 GMC Sierra 2500HD SLT 4WD photo
13
2016 GMC Sierra 2500HD SLT 4WD Cape Girardeau, MO
Red 6.6L V8 Engine
$38,895 107k miles
•••

#13 2016-2020 GMC Sierra 2500HD

CoPilot AI: It’s aC+” Buy

  • Includes $7,418 Premium Upgrades
  • CARFAX: One Owner
  • Below Average Mileage
More details
2017 GMC Sierra 2500HD SLE 4WD photo
2017 GMC Sierra 2500HD SLE 4WD Alton, IL
Black 6.0L V8 Engine
$36,985 21.4k miles
•••

Not Ranked

CoPilot AI: It’s aB+” Buy

  • Great Price - $3,519 Below Market
  • Includes $3,583 Premium Upgrades
  • Very Low Mileage
More details
2020 GMC Sierra 2500HD  4WD photo
2020 GMC Sierra 2500HD 4WD Crystal City, MO
White 6.6L V8 Engine
$34,800 59k miles
•••

Not Ranked

CoPilot AI: It’s aB+” Buy

  • Fair Price - $464 Below Market
  • Includes $1,044 Premium Upgrades
  • Very Low Mileage
More details
2019 GMC Sierra 2500HD  4WD photo
2019 GMC Sierra 2500HD 4WD Fulton, MO
6.6L V8 Engine
$35,900 76.5k miles
•••

Not Ranked

CoPilot AI: It’s aB+” Buy

  • Fair Price - $203 Below Market
  • Includes $6,270 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2016 GMC Sierra 2500HD  4WD photo
2016 GMC Sierra 2500HD 4WD Palmyra, IL
Black 6.0L V8 Engine
$26,995 84.5k miles
•••

Not Ranked

CoPilot AI: It’s aB-” Buy

  • Includes $1,508 Premium Upgrades
  • Very Low Mileage
  • Dealer Rating - 4.5 stars
More details
1-25 of 27 results

2018 GMC Sierra 2500HD

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

© 2026 CoPilot. All Rights Reserved.