CoPilot AI-Assisted Car Shopping

 New Search
 Save
 Sort
 Share

Used 2018 GMC Sierra 1500 for Sale in San Antonio, TX

Sierra 1500s for Sale at Dealers

Filters
Price
Year
Mileage
Trim
2020 GMC Sierra 1500 Denali RWD photo
2020 GMC Sierra 1500 Denali RWD • Kerrville, TX
White • 5.3L V8 Engine
$34,991 • 82.9k miles
•••

#30 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B” Buy

  • Fair Price - $782 Below Market
  • Includes $3,470 Premium Upgrades
  • CARFAX: One Owner
More details
2020 GMC Sierra 1500 Denali 4WD photo
Price Drop
2020 GMC Sierra 1500 Denali 4WD • Selma, TX
Black • 3.0L I6 Engine
$37,994 • 80.2k miles
•••

#46 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B” Buy

  • $1 Price Drop
  • Fair Price - $1,101 Above Market
  • Includes $7,022 Premium Upgrades
More details
2018 GMC Sierra 1500 SLT 4WD photo
8
Price Drop
2018 GMC Sierra 1500 SLT 4WD • San Antonio, TX
Black • 5.3L V8 Engine
$24,490 • 115.7k miles
•••

#8 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $500 Price Drop
  • Great Price - $2,689 Below Market
  • Includes $4,813 Premium Upgrades
More details
2019 GMC Sierra 1500 SLT 4WD photo
16
2019 GMC Sierra 1500 SLT 4WD • San Antonio, TX
Red • 5.3L V8 Engine
$36,071 • 50.6k miles
•••

#16 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Fair Price - $1,082 Below Market
  • Includes $9,518 Premium Upgrades
  • CARFAX: One Owner
More details
2020 GMC Sierra 1500 SLT RWD photo
19
Price Drop
2020 GMC Sierra 1500 SLT RWD • San Antonio, TX
White • 5.3L V8 Engine
$34,881 • 30.8k miles
•••

#19 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $690 Price Drop
  • Fair Price - $891 Below Market
  • Includes $6,909 Premium Upgrades
More details
2017 GMC Sierra 1500 SLT RWD photo
2017 GMC Sierra 1500 SLT RWD • Austin, TX
White • 5.3L V8 Engine
$20,990 • 143k miles
•••

#51 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “C” Buy

  • Includes $2,610 Premium Upgrades
  • CARFAX: One Owner
  • Dealer Rating - 4.4 stars
More details
2020 GMC Sierra 1500 SLT RWD photo
25
Price Drop
2020 GMC Sierra 1500 SLT RWD • San Antonio, TX
White • 5.3L V8 Engine
$33,450 • 59.3k miles
•••

#25 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $50 Price Drop
  • Fair Price - $517 Above Market
  • Includes $6,364 Premium Upgrades
More details
2019 GMC Sierra 1500 SLT 4WD photo
2019 GMC Sierra 1500 SLT 4WD • San Antonio, TX
Silver • 5.3L V8 Engine
$32,999 • 101.1k miles
•••

#52 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “C” Buy

  • Includes $7,473 Premium Upgrades
  • CARFAX: One Owner
  • Average Mileage
More details
2019 GMC Sierra 1500 SLT RWD photo
4
2019 GMC Sierra 1500 SLT RWD • Austin, TX
Brown • 5.3L V8 Engine
$26,900 • 111.1k miles
•••

#4 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Great Price - $4,252 Below Market
  • Includes $7,455 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2020 GMC Sierra 1500 Elevation 4WD photo
22
2020 GMC Sierra 1500 Elevation 4WD • Austin, TX
Gray • 2.7L I4 Engine
$28,993 • 69.5k miles
•••

#22 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Fair Price - $463 Below Market
  • Includes $2,446 Premium Upgrades
  • Below Average Mileage
More details
2019 GMC Sierra 1500 AT4 4WD photo
2019 GMC Sierra 1500 AT4 4WD • Austin, TX
Blue • 5.3L V8 Engine
$37,986 • 55.4k miles
•••

#27 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Fair Price - $1,046 Above Market
  • Includes $5,626 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2018 GMC Sierra 1500 RWD photo
5
Price Drop
2018 GMC Sierra 1500 RWD • Round Rock, TX
White • 5.3L V8 Engine
$17,999 • 82.2k miles
•••

#5 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $1,000 Price Drop
  • Great Price - $3,240 Below Market
  • Includes $1,519 Premium Upgrades
More details
2020 GMC Sierra 1500 SLT 4WD photo
2020 GMC Sierra 1500 SLT 4WD • Kerrville, TX
Blue • 5.3L V8 Engine
$29,999 • 111.1k miles
•••

#67 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “F” Buy

  • Dealer Rating - 4.8 stars
More details
2017 GMC Sierra 1500 Denali 4WD photo
14
2017 GMC Sierra 1500 Denali 4WD • Austin, TX
White • 6.2L V8 Engine
$27,493 • 96k miles
•••

#14 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Good Price - $1,500 Below Market
  • Includes $3,080 Premium Upgrades
  • Below Average Mileage
More details
2018 GMC Sierra 1500 SLT 4WD photo
7
Price Drop
2018 GMC Sierra 1500 SLT 4WD • Universal City, TX
Silver • 6.2L V8 Engine
$23,850 • 112.5k miles
•••

#7 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $1,000 Price Drop
  • Great Price - $2,713 Below Market
  • Includes $4,675 Premium Upgrades
More details
2018 GMC Sierra 1500 SLE 4WD photo
Price Drop
2018 GMC Sierra 1500 SLE 4WD • San Antonio, TX
Black • 5.3L V8 Engine
$24,307 • 110.2k miles
•••

#48 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “C+” Buy

  • $1,550 Price Drop
  • Fair Price - $463 Below Market
  • Motivation to Negotiate - Increasing
More details
2016 GMC Sierra 1500 Denali 4WD photo
2016 GMC Sierra 1500 Denali 4WD • San Antonio, TX
Gray • 6.2L V8 Engine
$31,811 • 84.6k miles
•••

#56 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “D+” Buy

  • Includes $2,472 Premium Upgrades
  • Motivation to Negotiate - Very High
  • Very Low Mileage
More details
2019 GMC Sierra 1500 SLT 4WD photo
15
Price Drop
2019 GMC Sierra 1500 SLT 4WD • Castroville, TX
White • 5.3L V8 Engine
$27,963 • 111.8k miles
•••

#15 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $274 Price Drop
  • Good Price - $1,276 Below Market
  • Includes $4,675 Premium Upgrades
More details
2020 GMC Sierra 1500 AT4 4WD photo
2020 GMC Sierra 1500 AT4 4WD • Live Oak, TX
Black • 6.2L V8 Engine
$37,990 • 80.2k miles
•••

#45 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B” Buy

  • Fair Price - $668 Above Market
  • Includes $7,944 Premium Upgrades
  • CARFAX: One Owner
More details
2019 GMC Sierra 1500 Denali 4WD photo
2019 GMC Sierra 1500 Denali 4WD • San Antonio, TX
Blue • 6.2L V8 Engine
$39,999 • 57.4k miles
•••

#50 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “C+” Buy

  • Includes $4,745 Premium Upgrades
  • CARFAX: One Owner
  • Very Low Mileage
More details
2019 GMC Sierra 1500 AT4 4WD photo
6
2019 GMC Sierra 1500 AT4 4WD • San Antonio, TX
Black • 6.2L V8 Engine
$31,010 • 116.1k miles
•••

#6 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Great Price - $2,959 Below Market
  • Includes $6,264 Premium Upgrades
  • Dealer Rating - 4.7 stars
More details
2020 GMC Sierra 1500 SLT 4WD photo
9
Price Drop
2020 GMC Sierra 1500 SLT 4WD • Austin, TX
Gray • 5.3L V8 Engine
$30,990 • 81.9k miles
•••

#9 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $787 Price Drop
  • Great Price - $2,328 Below Market
  • Includes $7,737 Premium Upgrades
More details
2019 GMC Sierra 1500 AT4 4WD photo
2019 GMC Sierra 1500 AT4 4WD • San Antonio, TX
White • 6.2L V8 Engine
$31,900 • 112.8k miles
•••

#28 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B” Buy

  • Fair Price - $880 Below Market
  • Includes $6,149 Premium Upgrades
  • Motivation to Negotiate - Very High
More details
2019 GMC Sierra 1500 SLT RWD photo
2
Price Drop
2019 GMC Sierra 1500 SLT RWD • San Antonio, TX
Brown • 5.3L V8 Engine
$31,647 • 65.1k miles
•••

#2 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $1 Price Drop
  • Great Price - $5,664 Below Market
  • Includes $8,852 Premium Upgrades
More details
2019 GMC Sierra 1500 SLT 4WD photo
Price Drop
2019 GMC Sierra 1500 SLT 4WD • Buda, TX
Black • 5.3L V8 Engine
$32,492 • 95k miles
•••

#60 2016-2020 GMC Sierra 1500

CoPilot AI: It’s a “D” Buy

  • $500 Price Drop
  • Includes $4,390 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
1-25 of 106 results
HomeGMCSierra 1500

2018 GMC Sierra 1500

Half-Ton Truck
Seats
6
Fuel Economy
16City MPG
22Hwy MPG
NHTSA Rating Summary
Copilot Rating
Dimensions
Most Popular Models like Sierra 1500
GMC Sierra 1500 near San Antonio, TX
Other Years
View more Crew Cab Pickups

© 2026 CoPilot. All Rights Reserved.