CoPilot AI-Assisted Car Shopping

 New Search
 Save
 Sort
 Share

Used 2020 GMC Sierra 1500 for Sale in San Diego, CA

Sierra 1500s for Sale at Dealers

Filters
Price
Year
Mileage
Trim
2020 GMC Sierra 1500 SLE RWD photo
2020 GMC Sierra 1500 SLE RWD • National City, CA
White • 2.7L I4 Engine
$28,995 • 80k miles
•••

#85 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “D” Buy

  • Includes $3,232 Premium Upgrades
  • Motivation to Negotiate - Very High
  • Average Mileage
More details
2019 GMC Sierra 1500 Denali 4WD photo
Price Drop
2019 GMC Sierra 1500 Denali 4WD • National City, CA
Black • 6.2L V8 Engine
$34,588 • 99.4k miles
•••

#35 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $100 Price Drop
  • Good Price - $1,086 Below Market
  • Includes $6,704 Premium Upgrades
More details
2018 GMC Sierra 1500 SLT 4WD photo
8
2018 GMC Sierra 1500 SLT 4WD • Torrance, CA
Black • 5.3L V8 Engine
$25,995 • 130.3k miles
•••

#8 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Great Price - $4,770 Below Market
  • Includes $8,388 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 Elevation RWD photo
Price Drop
2021 GMC Sierra 1500 Elevation RWD • Huntington Beach, CA
White • 2.7L I4 Engine
$29,662 • 65.7k miles
•••

#59 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B-” Buy

  • $221 Price Drop
  • Good Price - $1,585 Below Market
  • Includes $534 Premium Upgrades
More details
2022 GMC Sierra 1500 Pro RWD photo
2022 GMC Sierra 1500 Pro RWD • Rialto, CA
White • 5.3L V8 Engine
$19,995 • 113.6k miles
•••
More details
2019 GMC Sierra 1500 SLT RWD photo
2019 GMC Sierra 1500 SLT RWD • Downey, CA
Blue • 5.3L V8 Engine
$27,300 • 147.3k miles
•••

#82 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “D” Buy

  • Includes $3,376 Premium Upgrades
  • CARFAX: One Owner
  • Motivation to Negotiate - Very High
More details
2021 GMC Sierra 1500 AT4 4WD photo
2021 GMC Sierra 1500 AT4 4WD • El Centro, CA
White • 6.2L V8 Engine
$39,725 • 65.8k miles
•••

#70 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “C” Buy

  • Includes $2,318 Premium Upgrades
  • CARFAX: One Owner
  • Below Average Mileage
More details
2022 GMC Sierra 1500 Elevation RWD photo
13
Price Drop
2022 GMC Sierra 1500 Elevation RWD • Cerritos, CA
Gray • 2.7L I4 Engine
$31,991 • 46.7k miles
•••

#13 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $1,000 Price Drop
  • Great Price - $4,021 Below Market
  • Includes $1,394 Premium Upgrades
More details
2018 GMC Sierra 1500 SLT 4WD photo
2018 GMC Sierra 1500 SLT 4WD • Escondido, CA
Silver • 6.2L V8 Engine
$29,999 • 84.7k miles
•••

#31 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Good Price - $1,235 Below Market
  • Includes $7,056 Premium Upgrades
  • Motivation to Negotiate - Very High
More details
2021 GMC Sierra 1500 AT4 4WD photo
2021 GMC Sierra 1500 AT4 4WD • Escondido, CA
Gray • 6.2L V8 Engine
$43,987 • 61k miles
•••

#48 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B” Buy

  • Fair Price - $358 Below Market
  • Includes $9,402 Premium Upgrades
  • Below Average Mileage
More details
2022 GMC Sierra 1500 Elevation 4WD photo
2022 GMC Sierra 1500 Elevation 4WD • Santa Ana, CA
Black • 5.3L V8 Engine
$45,988 • 39.6k miles
•••

#65 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “C+” Buy

  • Includes $4,116 Premium Upgrades
  • CARFAX: One Owner
  • Very Low Mileage
More details
2018 GMC Sierra 1500 SLT RWD photo
2018 GMC Sierra 1500 SLT RWD • Montclair, CA
Blue • 5.3L V8 Engine
$30,599 • 58.4k miles
•••

#41 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Fair Price - $877 Above Market
  • Includes $6,631 Premium Upgrades
  • Very Low Mileage
More details
2020 GMC Sierra 1500 SLT RWD photo
Price Drop
2020 GMC Sierra 1500 SLT RWD • Orange, CA
White • 5.3L V8 Engine
$27,514 • 123.8k miles
•••

#50 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B” Buy

  • $440 Price Drop
  • Fair Price - $300 Below Market
  • Includes $7,207 Premium Upgrades
More details
2022 GMC Sierra 1500 Elevation RWD photo
Price Drop
2022 GMC Sierra 1500 Elevation RWD • National City, CA
White • 5.3L V8 Engine
$39,588 • 51.8k miles
•••

#84 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “D” Buy

  • $300 Price Drop
  • Includes $2,171 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 AT4 4WD photo
Price Drop
2021 GMC Sierra 1500 AT4 4WD • Vista, CA
Gray • 3.0L I6 Engine
$39,000 • 60.8k miles
•••

#28 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $1,000 Price Drop
  • Good Price - $1,872 Below Market
  • Includes $4,271 Premium Upgrades
More details
2021 GMC Sierra 1500 Elevation 4WD photo
2021 GMC Sierra 1500 Elevation 4WD • Buena Park, CA
Gray • 5.3L V8 Engine
$38,995 • 37.6k miles
•••

#40 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Fair Price - $155 Above Market
  • Includes $2,009 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 SLT RWD photo
2021 GMC Sierra 1500 SLT RWD • South Gate, CA
Silver • 3.0L I6 Engine
$41,995 • 70.7k miles
•••

#88 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “D” Buy

  • Includes $4,567 Premium Upgrades
  • CARFAX: One Owner
  • Motivation to Negotiate - Increasing
More details
2022 GMC Sierra 1500 Elevation 4WD photo
2022 GMC Sierra 1500 Elevation 4WD • Fontana, CA
White • 2.7L I4 Engine
$41,988 • 17.7k miles
•••

#55 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B” Buy

  • Fair Price - $51 Above Market
  • Includes $1,161 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 SLT RWD photo
4
Price Drop
2021 GMC Sierra 1500 SLT RWD • Temecula, CA
White • 5.3L V8 Engine
$30,523 • 96.2k miles
•••

#4 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • $2,404 Price Drop
  • Great Price - $5,156 Below Market
  • Includes $8,304 Premium Upgrades
More details
2019 GMC Sierra 1500 Denali 4WD photo
17
2019 GMC Sierra 1500 Denali 4WD • Irvine, CA
Black • 6.2L V8 Engine
$35,998 • 80.3k miles
•••

#17 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Great Price - $2,948 Below Market
  • Includes $5,648 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2019 GMC Sierra 1500 AT4 4WD photo
2019 GMC Sierra 1500 AT4 4WD • Norco, CA
Black • 5.3L V8 Engine
$34,971 • 78.6k miles
•••

#39 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “B+” Buy

  • Fair Price - $467 Below Market
  • Includes $5,939 Premium Upgrades
  • CARFAX: One Owner
More details
2020 GMC Sierra 1500 Denali 4WD photo
Price Drop
2020 GMC Sierra 1500 Denali 4WD • Norco, CA
Black • 6.2L V8 Engine
$36,996 • 76.3k miles
•••

#68 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “C” Buy

  • $1,000 Price Drop
  • Includes $2,012 Premium Upgrades
  • Motivation to Negotiate - High
More details
2022 GMC Sierra 1500 AT4 4WD photo
2022 GMC Sierra 1500 AT4 4WD • El Centro, CA
White • 3.0L I6 Engine
$43,494 • 80.8k miles
•••

#83 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “D” Buy

  • Includes $1,752 Premium Upgrades
  • CARFAX: One Owner
  • Dealer Rating - 4.4 stars
More details
2021 GMC Sierra 1500 SLE 4WD photo
2021 GMC Sierra 1500 SLE 4WD • Vista, CA
Blue • 3.0L I6 Engine
$33,995 • 90.2k miles
•••

#66 2018-2022 GMC Sierra 1500

CoPilot AI: It’s a “C” Buy

  • Includes $3,893 Premium Upgrades
  • Motivation to Negotiate - Very High
  • Dealer Rating - 4.8 stars
More details
2020 GMC Sierra 1500 Denali 4WD photo
2020 GMC Sierra 1500 Denali 4WD • South Gate, CA
Blue • 6.2L V8 Engine
$41,999 • 90.2k miles
•••

Not Ranked

CoPilot AI: It’s a “B” Buy

  • Fair Price - $839 Below Market
  • Includes $10,735 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
1-25 of 145 results
HomeGMCSierra 1500

2020 GMC Sierra 1500

Half-Ton Truck
Seats
6
Fuel Economy
17City MPG
24Hwy MPG
NHTSA Rating Summary
Copilot Rating
Dimensions
Most Popular Models like Sierra 1500
GMC Sierra 1500 near San Diego, CA
Research More Models
View more Crew Cab Pickups

© 2026 CoPilot. All Rights Reserved.