Cheapest · Used 2021 GMC Sierra
Rank #1 / 3,018 listings
Cheapest Used 2021 GMC Sierra for Sale in the US
The cheapest used 2021 GMC Sierra in the US today costs $11,994 — a 2021 Fleet Base located in Muenster, TX. We track 3,018 active listings; the median price is $37,588, so the top deal is $25,594 under the median.
Browse by model year
cheapest per year- All years
- 2027 · from $41,819
- 2026 · from $3,000
- 2025 · from $4,483
- 2024 · from $3,104
- 2023 · from $5,250
- 2022 · from $9,990
- 2021 · from $5,612
- 2020 · from $12,387
- 2019 · from $4,483
- 2018 · from $4,050
- 2017 · from $4,314
- 2016 · from $7,800
- 2015 · from $4,401
- 2014 · from $4,995
- 2013 · from $2,387
- 2012 · from $4,700
- 2011 · from $3,500
- 2010 · from $2,980
- 2009 · from $3,997
- 2008 · from $3,995
- 2007 · from $3,298
- 2006 · from $2,025
- 2005 · from $2,637
- 2004 · from $2,823
- 2003 · from $3,461
- 2002 · from $3,625
- 2001 · from $3,990
- 2000 · from $3,796
Top 10 cheapest listings
ranked by price-
$11,9942021 GMC Sierra Fleet Base179,086 mi · Muenster, TX · Klement Ford of MuensterView listing →
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$12,9992021 GMC Sierra Fleet Base195,957 mi · Bryant, AR · Landers Family Pre-ownedView listing → -
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$17,9952021 GMC Sierra Fleet Base172,168 mi · North Augusta, SC · Jiggie's Truck & Auto SalesView listing →
Deals on the map
9 pinnedFAQ
How much does the cheapest used 2021 GMC Sierra cost?
$11,994 — a 2021 Fleet Base in Muenster, TX (as of 2026-07-19).
What is the median price of a used 2021 GMC Sierra?
$37,588 across 3,018 US dealer active listings.
How often are prices updated?
Listings and prices refresh continuously; this page is re-generated at least twice a day.
Explore more
Prices updated 2026-07-19. Data covers active dealer listings across the USA.