CoPilot AI-Assisted Car Shopping

 New Search
 Save
 Sort
 Share

Used 2020 GMC Sierra 1500 for Sale in Indianapolis, IN

Sierra 1500s for Sale at Dealers

Filters
Price
Year
Mileage
Trim
2019 GMC Sierra 1500 SLT 4WD photo
New Find
2019 GMC Sierra 1500 SLT 4WD • Indianapolis, IN
White • 5.3L V8 Engine
$31,995 • 99.2k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • Fair Price - $349 Above Market
  • Includes $7,699 Premium Upgrades
  • Average Mileage
More details
2019 GMC Sierra 1500 Denali 4WD photo
Price Drop
2019 GMC Sierra 1500 Denali 4WD • Indianapolis, IN
Black • 6.2L V8 Engine
$33,295 • 103.8k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • $100 Price Drop
  • Fair Price - $107 Above Market
  • Includes $6,367 Premium Upgrades
More details
2019 GMC Sierra 1500 Denali 4WD photo
2019 GMC Sierra 1500 Denali 4WD • Indianapolis, IN
Gray • 6.2L V8 Engine
$34,395 • 90.6k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • Fair Price - $592 Below Market
  • Includes $6,517 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 AT4 4WD photo
Price Drop
2021 GMC Sierra 1500 AT4 4WD • Indianapolis, IN
Black • 6.2L V8 Engine
$41,330 • 45.2k miles
•••

Not Ranked

CoPilot AI: It’s an “A” Buy

  • $619 Price Drop
  • Fair Price - $921 Above Market
  • Includes $2,452 Premium Upgrades
More details
2020 GMC Sierra 1500 Denali 4WD photo
Price Drop
2020 GMC Sierra 1500 Denali 4WD • Indianapolis, IN
Black • 3.0L I6 Engine
$36,246 • 72.1k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • $999 Price Drop
  • Great Price - $3,020 Below Market
  • Includes $7,138 Premium Upgrades
More details
2021 GMC Sierra 1500 Denali 4WD photo
Price Drop
2021 GMC Sierra 1500 Denali 4WD • Indianapolis, IN
Gray • 3.0L I6 Engine
$34,994 • 77.7k miles
•••

Not Ranked

CoPilot AI: It’s a “B” Buy

  • $158 Price Drop
  • Fair Price - $59 Above Market
  • Includes $572 Premium Upgrades
More details
2020 GMC Sierra 1500 SLE 4WD photo
New Find
2020 GMC Sierra 1500 SLE 4WD • Indianapolis, IN
White • 2.7L I4 Engine
$31,795 • 57.2k miles
•••

Not Ranked

CoPilot AI: It’s a “C” Buy

  • Includes $3,302 Premium Upgrades
  • Very Low Mileage
  • Dealer Rating - 4.9 stars
More details
2019 GMC Sierra 1500  4WD photo
New Find
2019 GMC Sierra 1500 4WD • Indianapolis, IN
Gray • 5.3L V8 Engine
$19,825 • 94.3k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $3,159 Below Market
  • Includes $2,023 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 AT4 4WD photo
Price Drop
2021 GMC Sierra 1500 AT4 4WD • Indianapolis, IN
Red • 3.0L I6 Engine
$43,975 • 66.1k miles
•••

Not Ranked

CoPilot AI: It’s a “C-” Buy

  • $560 Price Drop
  • Includes $5,165 Premium Upgrades
  • Motivation to Negotiate - Very High
More details
2021 GMC Sierra 1500 SLT 4WD photo
Price Drop
2021 GMC Sierra 1500 SLT 4WD • Indianapolis, IN
White • 3.0L I6 Engine
$31,975 • 151.4k miles
•••

Not Ranked

CoPilot AI: It’s a “D+” Buy

  • $5,000 Price Drop
  • Includes $7,480 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2021 GMC Sierra 1500 AT4 4WD photo
2021 GMC Sierra 1500 AT4 4WD • Indianapolis, IN
White • 6.2L V8 Engine
$47,975 • 56.8k miles
•••

Not Ranked

CoPilot AI: It’s a “C-” Buy

  • Includes $1,661 Premium Upgrades
  • Below Average Mileage
  • Dealer Rating - 4.4 stars
More details
2021 GMC Sierra 1500 Elevation 4WD photo
New Find
2021 GMC Sierra 1500 Elevation 4WD • Indianapolis, IN
Black • 5.3L V8 Engine
$40,535 • 45.7k miles
•••

Not Ranked

CoPilot AI: It’s a “C” Buy

  • Includes $3,198 Premium Upgrades
  • Very Low Mileage
  • Dealer Rating - 4.4 stars
More details
2021 GMC Sierra 1500 SLT 4WD photo
Price Drop
2021 GMC Sierra 1500 SLT 4WD • Indianapolis, IN
Gray • 5.3L V8 Engine
$43,975 • 66k miles
•••

Not Ranked

CoPilot AI: It’s a “C-” Buy

  • $560 Price Drop
  • Includes $4,986 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 AT4 4WD photo
Price Drop
2021 GMC Sierra 1500 AT4 4WD • Indianapolis, IN
Black • 3.0L I6 Engine
$39,975 • 108.4k miles
•••

Not Ranked

CoPilot AI: It’s a “C-” Buy

  • $3,000 Price Drop
  • Includes $1,887 Premium Upgrades
  • Motivation to Negotiate - Very High
More details
2021 GMC Sierra 1500 SLT 4WD photo
New Find
2021 GMC Sierra 1500 SLT 4WD • Indianapolis, IN
Gray • 3.0L I6 Engine
$43,975 • 73.1k miles
•••

Not Ranked

CoPilot AI: It’s a “C-” Buy

  • Includes $5,454 Premium Upgrades
  • Average Mileage
  • Dealer Rating - 4.4 stars
More details
2021 GMC Sierra 1500 Denali 4WD photo
Price Drop
2021 GMC Sierra 1500 Denali 4WD • Indianapolis, IN
Green • 6.2L V8 Engine
$42,403 • 62.2k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • $261 Price Drop
  • Fair Price - $1,165 Above Market
  • Includes $4,798 Premium Upgrades
More details
2021 GMC Sierra 1500 SLT 4WD photo
New Find
2021 GMC Sierra 1500 SLT 4WD • Indianapolis, IN
Black • 5.3L V8 Engine
$34,198 • 72.5k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • Fair Price - $843 Above Market
  • Includes $3,931 Premium Upgrades
  • Average Mileage
More details
2021 GMC Sierra 1500  RWD photo
Price Drop
New Find
2021 GMC Sierra 1500 RWD • Indianapolis, IN
Black • 4.3L V6 Engine
$31,998 • 4.4k miles
•••

Not Ranked

CoPilot AI: It’s a “D+” Buy

  • $1,000 Price Drop
  • Includes $596 Premium Upgrades
  • Very Low Mileage
More details
2021 GMC Sierra 1500 SLT 4WD photo
Price Drop
2021 GMC Sierra 1500 SLT 4WD • Plainfield, IN
Red • 5.3L V8 Engine
$31,000 • 102.8k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • $500 Price Drop
  • Fair Price - $679 Below Market
  • Includes $4,695 Premium Upgrades
More details
2019 GMC Sierra 1500 SLE 4WD photo
2019 GMC Sierra 1500 SLE 4WD • Plainfield, IN
Red • 5.3L V8 Engine
$24,854 • 113k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • Fair Price - $145 Above Market
  • Includes $3,474 Premium Upgrades
  • Motivation to Negotiate - High
More details
2021 GMC Sierra 1500 SLT 4WD photo
New Find
2021 GMC Sierra 1500 SLT 4WD • Plainfield, IN
White • 5.3L V8 Engine
$37,500 • 52.4k miles
•••

Not Ranked

CoPilot AI: It’s a “D+” Buy

  • Very Low Mileage
  • Dealer Rating - 4.3 stars
More details
2020 GMC Sierra 1500 SLE 4WD photo
Price Drop
New Find
2020 GMC Sierra 1500 SLE 4WD • Plainfield, IN
5.3L V8 Engine
$26,161 • 88.2k miles
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • $295 Price Drop
  • Fair Price - $677 Above Market
  • Includes $738 Premium Upgrades
More details
2021 GMC Sierra 1500 SLT 4WD photo
Price Drop
2021 GMC Sierra 1500 SLT 4WD • Avon, IN
Gray • 6.2L V8 Engine
$35,805 • 88.2k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • $475 Price Drop
  • Fair Price - $271 Above Market
  • Includes $5,261 Premium Upgrades
More details
2019 GMC Sierra 1500 Denali 4WD photo
New Find
2019 GMC Sierra 1500 Denali 4WD • Carmel, IN
White • 6.2L V8 Engine
$37,990 • 56.8k miles
•••

Not Ranked

CoPilot AI: It’s an “A” Buy

  • Fair Price - $1,060 Below Market
  • Includes $7,397 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 AT4 4WD photo
Price Drop
2021 GMC Sierra 1500 AT4 4WD • Carmel, IN
Gray • 3.0L I6 Engine
$32,998 • 92.3k miles • Certified
•••

Not Ranked

CoPilot AI: It’s a “B-” Buy

  • $400 Price Drop
  • Includes $2,081 Premium Upgrades
  • CARFAX: One Owner
More details
1-25 of 130 results

2020 GMC Sierra 1500

Half-Ton Truck
Seats
6
Fuel Economy
16City MPG
21Hwy MPG
NHTSA Rating Summary
Copilot Rating
Dimensions

© 2026 CoPilot. All Rights Reserved.