CoPilot AI-Assisted Car Shopping

 New Search
 Save
 Sort
 Share

Used 2020 GMC Sierra 1500 for Sale in Long Beach, CA

Sierra 1500s for Sale at Dealers

Filters
Price
Year
Mileage
Trim
2021 GMC Sierra 1500 AT4 4WD photo
Price Drop
2021 GMC Sierra 1500 AT4 4WD • Long Beach, CA
Black • 6.2L V8 Engine
$40,997 • 72.3k miles
•••

Not Ranked

CoPilot AI: It’s a “C-” Buy

  • $625 Price Drop
  • Includes $2,033 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 AT4 4WD photo
2021 GMC Sierra 1500 AT4 4WD • Bellflower, CA
White • 3.0L I6 Engine
$31,102 • 123.2k miles • Certified
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • Good Price - $1,901 Below Market
  • Includes $6,900 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2021 GMC Sierra 1500 Elevation 4WD photo
New Find
2021 GMC Sierra 1500 Elevation 4WD • Cerritos, CA
Gray • 3.0L I6 Engine
$29,990 • 101.7k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $3,184 Below Market
  • Includes $3,277 Premium Upgrades
  • CARFAX: One Owner
More details
2019 GMC Sierra 1500 Denali 4WD photo
Price Drop
2019 GMC Sierra 1500 Denali 4WD • Los Angeles, CA
White • 5.3L V8 Engine
$34,885 • 70.4k miles
•••

Not Ranked

CoPilot AI: It’s a “C-” Buy

  • $1,000 Price Drop
  • Includes $638 Premium Upgrades
  • Motivation to Negotiate - Very High
More details
2020 GMC Sierra 1500 SLT RWD photo
New Find
2020 GMC Sierra 1500 SLT RWD • Downey, CA
White • 5.3L V8 Engine
$33,609 • 105.1k miles
•••

Not Ranked

CoPilot AI: It’s a “C-” Buy

  • Includes $6,681 Premium Upgrades
  • CARFAX: One Owner
  • Dealer Rating - 4.2 stars
More details
2019 GMC Sierra 1500 Denali 4WD photo
New Find
2019 GMC Sierra 1500 Denali 4WD • Anaheim, CA
Black • 6.2L V8 Engine
$35,119 • 91.6k miles
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • Fair Price - $521 Below Market
  • Includes $6,688 Premium Upgrades
  • Average Mileage
More details
2020 GMC Sierra 1500 AT4 4WD photo
Price Drop
New Find
2020 GMC Sierra 1500 AT4 4WD • Buena Park, CA
White • 5.3L V8 Engine
$29,684 • 124.6k miles
•••

Not Ranked

CoPilot AI: It’s a “B-” Buy

  • $37 Price Drop
  • Includes $3,243 Premium Upgrades
  • Dealer Rating - 4.5 stars
More details
2021 GMC Sierra 1500 AT4 4WD photo
Price Drop
2021 GMC Sierra 1500 AT4 4WD • Torrance, CA
Black • 6.2L V8 Engine
$42,830 • 36.3k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • $248 Price Drop
  • Great Price - $3,086 Below Market
  • Includes $9,934 Premium Upgrades
More details
2021 GMC Sierra 1500 Elevation RWD photo
Price Drop
New Find
2021 GMC Sierra 1500 Elevation RWD • South Gate, CA
White • 5.3L V8 Engine
$26,900 • 121k miles
•••

Not Ranked

CoPilot AI: It’s a “B” Buy

  • Fair Price - $766 Above Market
  • Includes $740 Premium Upgrades
More details
2019 GMC Sierra 1500 AT4 4WD photo
Price Drop
2019 GMC Sierra 1500 AT4 4WD • Garden Grove, CA
Black • 6.2L V8 Engine
$36,298 • 79.5k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • $1,500 Price Drop
  • Good Price - $1,726 Below Market
  • Includes $7,196 Premium Upgrades
More details
2019 GMC Sierra 1500 AT4 4WD photo
2019 GMC Sierra 1500 AT4 4WD • Garden Grove, CA
Black • 6.2L V8 Engine
$29,289 • 114.1k miles
•••

Not Ranked

CoPilot AI: It’s an “A-” Buy

  • Fair Price - $835 Below Market
  • Includes $4,697 Premium Upgrades
  • CARFAX: One Owner
More details
2019 GMC Sierra 1500 AT4 4WD photo
New Find
2019 GMC Sierra 1500 AT4 4WD • Garden Grove, CA
Black • 6.2L V8 Engine
$36,298 • 76k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Good Price - $2,216 Below Market
  • Includes $7,380 Premium Upgrades
  • Below Average Mileage
More details
2020 GMC Sierra 1500 AT4 4WD photo
2020 GMC Sierra 1500 AT4 4WD • Garden Grove, CA
Gray • 6.2L V8 Engine
$31,289 • 124.4k miles
•••

Not Ranked

CoPilot AI: It’s an “A” Buy

  • Good Price - $1,338 Below Market
  • Includes $6,915 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 Elevation 4WD photo
2021 GMC Sierra 1500 Elevation 4WD • Garden Grove, CA
Gray • 5.3L V8 Engine
$25,298 • 129.2k miles
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • Great Price - $2,029 Below Market
  • Includes $3,131 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2021 GMC Sierra 1500 AT4 4WD photo
Price Drop
2021 GMC Sierra 1500 AT4 4WD • Garden Grove, CA
Gray • 5.3L V8 Engine
$37,298 • 73.8k miles
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • $1,000 Price Drop
  • Fair Price - $1,043 Above Market
  • Includes $1,363 Premium Upgrades
More details
2021 GMC Sierra 1500 Denali 4WD photo
2021 GMC Sierra 1500 Denali 4WD • Garden Grove, CA
White • 6.2L V8 Engine
$28,289 • 135.5k miles
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • Great Price - $1,909 Below Market
  • Includes $2,735 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2021 GMC Sierra 1500 Denali 4WD photo
New Find
2021 GMC Sierra 1500 Denali 4WD • Garden Grove, CA
White • 6.2L V8 Engine
$40,298 • 51.1k miles
•••

Not Ranked

CoPilot AI: It’s an “A” Buy

  • Fair Price - $125 Below Market
  • Includes $3,993 Premium Upgrades
  • Very Low Mileage
More details
2020 GMC Sierra 1500 Denali 4WD photo
New Find
2020 GMC Sierra 1500 Denali 4WD • Huntington Beach, CA
Gray • 3.0L I6 Engine
$39,580 • 72.2k miles
•••

Not Ranked

CoPilot AI: It’s a “C-” Buy

  • Includes $6,986 Premium Upgrades
  • Below Average Mileage
  • Dealer Rating - 4.4 stars
More details
2021 GMC Sierra 1500 AT4 4WD photo
Price Drop
2021 GMC Sierra 1500 AT4 4WD • Santa Ana, CA
Black • 3.0L I6 Engine
$25,673 • 156.2k miles
•••

Not Ranked

CoPilot AI: It’s a “B+” Buy

  • $870 Price Drop
  • Great Price - $2,210 Below Market
  • Includes $5,305 Premium Upgrades
More details
2020 GMC Sierra 1500 SLT RWD photo
2020 GMC Sierra 1500 SLT RWD • Montebello, CA
White • 5.3L V8 Engine
$34,141 • 68.6k miles • Certified
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Good Price - $2,035 Below Market
  • Includes $8,473 Premium Upgrades
  • Motivation to Negotiate - Increasing
More details
2021 GMC Sierra 1500 Denali 4WD photo
Price Drop
2021 GMC Sierra 1500 Denali 4WD • Inglewood, CA
Gray • 3.0L I6 Engine
$40,998 • 57.4k miles
•••

Not Ranked

CoPilot AI: It’s an “A” Buy

  • Fair Price - $289 Below Market
  • Includes $6,820 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 Elevation 4WD photo
New Find
2021 GMC Sierra 1500 Elevation 4WD • Inglewood, CA
Gray • 5.3L V8 Engine
$30,252 • 73.3k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $5,423 Below Market
  • Includes $1,776 Premium Upgrades
  • CARFAX: One Owner
More details
2021 GMC Sierra 1500 Elevation 4WD photo
Price Drop
New Find
2021 GMC Sierra 1500 Elevation 4WD • Inglewood, CA
Silver • 3.0L I6 Engine
$19,452 • 114.2k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • $2,800 Price Drop
  • Great Price - $5,060 Below Market
  • Includes $1,953 Premium Upgrades
More details
2021 GMC Sierra 1500 AT4 4WD photo
New Find
2021 GMC Sierra 1500 AT4 4WD • Inglewood, CA
Red • 3.0L I6 Engine
$33,452 • 64.2k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • Great Price - $2,916 Below Market
  • Includes $1,140 Premium Upgrades
  • CARFAX: One Owner
More details
2020 GMC Sierra 1500 SLE RWD photo
Price Drop
New Find
2020 GMC Sierra 1500 SLE RWD • Inglewood, CA
White • 5.3L V8 Engine
$25,952 • 54.9k miles
•••

Not Ranked

CoPilot AI: It’s an “A+” Buy

  • $300 Price Drop
  • Great Price - $3,690 Below Market
  • Includes $4,174 Premium Upgrades
More details
1-25 of 109 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.