4,229 Used 2021 GMC Sierra for Sale
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Dealer partner2021 GMC Sierra
4WD Crew Cab Short Box AT4•117,351 mi•
3GTP9EED2MG458928
$33,988
Denver, CO•Family Trucks And Vans
Dealer partner2021 GMC Sierra
4WD Crew Cab Short Box SLT•125,879 mi•
3GTU9DED3MG233737
$34,622
Waukegan, IL•Your Choice Autos Waukegan
New listing
2021 GMC Sierra
4WD Crew Cab Standard Box Denali•79,389 mi•
1GT49REY2MF222794
$54,900
Maywood, IL•Morelia Auto Sales Service
2021 GMC Sierra
Denali 4WD Crew Cab Long Box•90,145 mi•
1GT19REYXMF119495
$50,980
Downers Grove, IL•Star Motor Sales
2021 GMC Sierra
4WD Crew Cab Short Box AT4•174,321 mi•
3GTP9EED7MG170581
$27,950
Dawsonville, GA•Billy Ballew Motorsports
2021 GMC Sierra
4WD Crew Cab Short Box AT4•38,484 mi•
1GTP9EEL9MZ180438
$43,446
San Antonio, TX•Shottenkirk Toyota San Antonio
2021 GMC Sierra
4WD Crew Cab Short Box Denali•95,403 mi•
1GTU9FET0MZ163018
$36,000
Shreveport, LA•La 171 Auto
2021 GMC Sierra
4WD Crew Cab Standard Box Elevation•71,579 mi•
3GTU9CET9MG251693
$37,995
Dallas, TX•Alpha Autoplex
2021 GMC Sierra
AT4 4WD Crew Cab Short Box•58,461 mi•
1GTU9EET5MZ424637
$38,999
GURNEE, IL•Specialty Motors%3Amax_bytes(500000)%3Aquality(100)%3Afill(blur)%3Asharpen(0.7%2C0.5%2Ctrue)%3Aformat(jpg)%2F104842%2F12329409%2F328741785802653.jpg?t=b44b42661d4949826354350336a5f81be67d0aea82f298cfce8983045bcd63f2&w=3840&q=50)
2021 GMC Sierra
2WD Crew Cab Short Box SLT•107,050 mi•
3GTP8DED1MG245241
$27,100
San Antonio, TX•Rams Motors Llc
2021 GMC Sierra
Elevation 4WD Crew Cab Short Box•85,929 mi•
1GTU9CED8MZ333567
$32,075
Webster, NY•Marina Chrysler Jeep Dodge Ram
2021 GMC Sierra
4WD Crew Cab Short Box Elevation•54,747 mi•
3GTU9CET5MG447422
$37,695
Roselle, IL•The Car Haus
2021 GMC Sierra
4WD Crew Cab Standard Box Denali•59,545 mi•
1GT49WE76MF297682
$54,397
Cleveland, TN•Carsnow Llc
2021 GMC Sierra
4WD Crew Cab Short Box AT4•112,895 mi•
1GTP9EED4MZ232051
$35,756
Madison, NC•Smart Chevrolet
2021 GMC Sierra
4WD Crew Cab Short Box AT4•100,046 mi•
1GTP9EED8MZ198020
$33,950
Harrisonville, MO•Fountain Autoplex
2021 GMC Sierra
4WD Double Cab Standard Box Elevation•100,686 mi•
1GTR9CED4MZ218664
$22,998
Golden Valley, MN•Import Auto Sales
2021 GMC Sierra
4WD Crew Cab Short Box SLT•111,747 mi•
1GTU9DET3MZ340875
$37,999
Hollywood, FL•Pro Garage Llc
2021 GMC Sierra
4WD Crew Cab Short Box SLT•119,552 mi•
1GTU9DEL1MZ208150
$29,999
Austin, TX•Austin Texas Cars And Trucks
2021 GMC Sierra
2WD Regular Cab Long Box•85,192 mi•
3GTN8AEH3MG103160
$17,888
Denver, CO•Family Trucks And Vans
2021 GMC Sierra
4WD Crew Cab Short Box Denali•71,856 mi•
3GTU9FEL4MG133696
$37,888
Commack, NY•Lemans Cars
2021 GMC Sierra
4WD Crew Cab Short Box Denali•66,566 mi•
3GTU9FET4MG386064
$39,890
Noblesville, IN•5 Star Imports
2021 GMC Sierra
4WD Crew Cab Short Box AT4•120,008 mi•
1GTP9EELXMZ224883
$35,480
Leitchfield, KY•Auto Smart Of Leitchfield2021 GMC Sierra
4WD Crew Cab Short Box SLT•74,971 mi•
3GTU9DED8MG238299
$34,995
Bourbonnais, IL•Kia Of Bradley
2021 GMC Sierra
4WD Crew Cab Short Box SLT•107,818 mi•
3GTU9DED1MG213874
$31,000
Forreston, IL•Forreston Car Care
2021 GMC Sierra
4WD Double Cab Standard Box Elevation•65,424 mi•
1GTV9CET5MZ277972
$32,999
Warren, OH•Sims Buick Gmc Truck Inc
2021 GMC Sierra
4WD Crew Cab Short Box SLT•50,089 mi•
3GTU9DED8MG364548
$39,549
Campbellsville, KY•Autosmart Of Campbellsville
2021 GMC Sierra
4WD Crew Cab Standard Box•70,994 mi•
1GT49SEY3MF100212
$44,499
Joliet, IL•Your Choice Autos Joliet
2021 GMC Sierra
4WD Crew Cab Short Box AT4•141,280 mi•
3GTP9EEL5MG392785
$29,999
Irving, TX•Jdm Of Irving Buy Here Pay Here Bhph
2021 GMC Sierra
4WD Crew Cab Short Box AT4•78,963 mi•
3GTP9EEL3MG456077
$40,688
Morehead City, NC•Morehead Motor Co Service Center
2021 GMC Sierra
4WD Crew Cab Standard Box Elevation•121,232 mi•
3GTU9CED3MG291115
$25,991
Melissa, TX•Burls Used Cars2021 GMC Sierra overview
Shop 4,229 used 2021 GMC Sierra listings for sale nationwide, priced from $12,900 to $94,999 across 3,170 dealerships. The median asking price is $36,904, with an average mileage of 84,781 miles. Texas has the most used 2021 GMC Sierra listings at 441, followed by Florida and Michigan.
Used GMC Sierra by model year
- 2026 GMC Sierra for sale3,214 listings
- 2025 GMC Sierra for sale6,294 listings
- 2024 GMC Sierra for sale9,688 listings
- 2023 GMC Sierra for sale6,076 listings
- 2022 GMC Sierra for sale4,135 listings
- 2020 GMC Sierra for sale3,054 listings
- 2019 GMC Sierra for sale2,209 listings
- 2018 GMC Sierra for sale2,218 listings
- 2017 GMC Sierra for sale1,665 listings
- 2016 GMC Sierra for sale1,184 listings
- 2015 GMC Sierra for sale1,655 listings
- 2014 GMC Sierra for sale1,070 listings
- 2013 GMC Sierra for sale622 listings
- 2012 GMC Sierra for sale384 listings
- 2011 GMC Sierra for sale440 listings
- 2010 GMC Sierra for sale142 listings
- 2009 GMC Sierra for sale183 listings
- 2008 GMC Sierra for sale219 listings
- 2007 GMC Sierra for sale243 listings
- 2006 GMC Sierra for sale111 listings
- 2005 GMC Sierra for sale124 listings
- 2004 GMC Sierra for sale108 listings
- 2003 GMC Sierra for sale79 listings
- 2002 GMC Sierra for sale64 listings
- 2001 GMC Sierra for sale69 listings
- 2000 GMC Sierra for sale35 listings
- 1999 GMC Sierra for sale24 listings
- 1998 GMC Sierra for sale24 listings
- 1997 GMC Sierra for sale24 listings
- 1996 GMC Sierra for sale17 listings
- 1995 GMC Sierra for sale29 listings
- 1994 GMC Sierra for sale15 listings
- 1993 GMC Sierra for sale10 listings
- 1992 GMC Sierra for sale8 listings
- 1991 GMC Sierra for sale9 listings
- 1990 GMC Sierra for sale9 listings
- 1989 GMC Sierra for sale17 listings
- 1988 GMC Sierra for sale9 listings
- 1987 GMC Sierra for sale4 listings
- 1986 GMC Sierra for sale4 listings
- 1985 GMC Sierra for sale2 listings
- 1984 GMC Sierra for sale1 listing
- 1982 GMC Sierra for sale2 listings
About 2021 GMC Sierra
Frequently Asked Questions
How many used 2021 GMC Sierra listings are for sale?
There are 4,229 used 2021 GMC Sierra listings for sale from 3,170 dealerships nationwide, priced from $12,900 to $94,999.
How much does a used 2021 GMC Sierra cost?
The median asking price for a used 2021 GMC Sierra is $36,904. Listings range from $12,900 to $94,999. The average mileage is 84,781 miles.
What is the cheapest used 2021 GMC Sierra for sale?
The lowest-priced listing is a 2021 GMC Sierra 2WD Regular Cab Long Box at $12,900 with 131,644 miles in Chantilly, VA.
What trim levels are available for the 2021 GMC Sierra?
The 2021 GMC Sierra is available in the following trim levels:
- 2021 GMC Sierra 4WD Crew Cab Short Box AT4 for sale792 listings
- 2021 GMC Sierra 4WD Crew Cab Short Box SLT for sale712 listings
- 2021 GMC Sierra 4WD Crew Cab Short Box Denali for sale480 listings
- 2021 GMC Sierra 4WD Crew Cab Standard Box Elevation for sale360 listings
- 2021 GMC Sierra 4WD Crew Cab Standard Box Denali for sale338 listings
- 2021 GMC Sierra 4WD Crew Cab Standard Box AT4 for sale168 listings
- 2021 GMC Sierra 4WD Crew Cab Standard Box SLT for sale111 listings
- 2021 GMC Sierra 2WD Crew Cab Short Box SLT for sale103 listings
- 2021 GMC Sierra 4WD Double Cab Standard Box Elevation for sale99 listings
Used 2021 GMC Sierra by trim
- 2021 GMC Sierra 4WD Crew Cab Short Box AT4 for sale792 listings
- 2021 GMC Sierra 4WD Crew Cab Short Box SLT for sale712 listings
- 2021 GMC Sierra 4WD Crew Cab Short Box Denali for sale480 listings
- 2021 GMC Sierra 4WD Crew Cab Standard Box Elevation for sale360 listings
- 2021 GMC Sierra 4WD Crew Cab Standard Box Denali for sale338 listings
- 2021 GMC Sierra 4WD Crew Cab Standard Box AT4 for sale168 listings
- 2021 GMC Sierra 4WD Crew Cab Standard Box SLT for sale111 listings
- 2021 GMC Sierra 2WD Crew Cab Short Box SLT for sale103 listings
- 2021 GMC Sierra 4WD Double Cab Standard Box Elevation for sale99 listings
Used 2021 GMC Sierra by top metros
- Used 2021 GMC Sierra for sale in Houston, TX36 listings
- Used 2021 GMC Sierra for sale in Phoenix, AZ24 listings
- Used 2021 GMC Sierra for sale in Dallas, TX23 listings
- Used 2021 GMC Sierra for sale in San Antonio, TX20 listings
- Used 2021 GMC Sierra for sale in Miami, FL19 listings
- Used 2021 GMC Sierra for sale in Denver, CO16 listings
- Used 2021 GMC Sierra for sale in Arlington, TX14 listings
- Used 2021 GMC Sierra for sale in Austin, TX14 listings
- Used 2021 GMC Sierra for sale in Albuquerque, NM11 listings
- Used 2021 GMC Sierra for sale in Indianapolis, IN11 listings
- Used 2021 GMC Sierra for sale in Tucson, AZ11 listings