1,290 Used Gmc Sierra for Sale Near Thornton, CO

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2021 GMC Sierra SLT 4WD Crew Cab Short Box's photo

2021 GMC Sierra SLT 4WD Crew Cab Short Box

90,973 mi.

265 days on market

1GTU9DED4MZ141651

$36,767
Good Deal
Carboxx
Mobile, AL
2015 GMC Sierra 4WD Crew Cab SLT SWB's photo

2015 GMC Sierra 4WD Crew Cab SLT SWB

137,032 mi.

22 days on market

3GTU2VEC7FG361287

$20,400
Good DealSingle owner
Columbine Ford
Rifle, CO
4.7
2001 GMC Sierra C3's photo

2001 GMC Sierra C3

209,003 mi.

22 days on market

2GTEK69U911351164

$7,999
Good Deal
Chadron Chrysler Dodge Jeep Ram
Chadron, NE
3.8
2018 GMC Sierra 4WD Crew Cab Standard Box's photo

2018 GMC Sierra 4WD Crew Cab Standard Box

175,358 mi.

22 days on market

1GT42VCYXJF108148

$28,800
Berkenkotter Motors
Castle Rock, CO
4.1
2021 GMC Sierra 4WD Crew Cab Short Box Denali's photo

2021 GMC Sierra 4WD Crew Cab Short Box Denali

81,320 mi.

22 days on market

1GTU9FEL4MZ352318

Contact Dealer
Town Country Automall
Alamosa, CO
2021 GMC Sierra 4WD Crew Cab Short Box SLT's photo

2021 GMC Sierra 4WD Crew Cab Short Box SLT

71,424 mi.

22 days on market

3GTU9DETXMG228915

$39,295
Fair Deal
Autonation Chrysler Dodge Jeep Ram Canon City
Canon City, CO
4.6
2000 GMC Sierra K2500 4X4 SLE EXTENDED CAB SWB HD's photo

2000 GMC Sierra K2500 4X4 SLE EXTENDED CAB SWB HD

128,683 mi.

22 days on market

1GTGK29U7YE284185

$14,995
Fair DealSingle owner
Mccloskey Truck Town
Colorado Springs, CO
4.8
1993 GMC Sierra's photo

1993 GMC Sierra

75,915 mi.

22 days on market

2GTEK19K7P1503968

$22,900
Fair Deal
Worldwide Vintage Autos
Denver, CO
4.5
2025 GMC Sierra 4WD Crew Cab Short Box Denali's photo

2025 GMC Sierra 4WD Crew Cab Short Box Denali

21,861 mi.

22 days on market

3GTUUGEL9SG228823

$62,594
Good DealSingle owner
Autonation Chevrolet North
Denver, CO
4.1
2022 GMC Sierra 4WD Crew Cab Standard Box SLE's photo

2022 GMC Sierra 4WD Crew Cab Standard Box SLE

79,380 mi.

23 days on market

1GT49TEY3NF119530

$44,824
Great DealSingle ownerClean title
Perkins Chevrolet Gmc
La Junta, CO
4.5
2019 GMC Sierra 4WD Double Cab Standard Box's photo

2019 GMC Sierra 4WD Double Cab Standard Box

42,139 mi.

23 days on market

2GT22NEGXK1236393

$31,298
Fair Deal
Autonation Usa Denver Broadway
Littleton, CO
4.6
2024 GMC Sierra 4WD Crew Cab Short Box AT4's photo

2024 GMC Sierra 4WD Crew Cab Short Box AT4

62,752 mi.

23 days on market

1GTUUEE87RZ170110

$52,285
Good Deal
Castle Rock Ford
Castle Rock, CO
4.5
2022 GMC Sierra 4WD Crew Cab Short Box Denali's photo

2022 GMC Sierra 4WD Crew Cab Short Box Denali

37,680 mi.

23 days on market

1GTUUGEL3NZ543783

$51,990
Fair Deal
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box AT4's photo

2024 GMC Sierra 4WD Crew Cab Short Box AT4

37,476 mi.

23 days on market

3GTUUEE82RG308555

$56,091
Fair Deal
Auto Mart Usa Parker
Parker, CO
4.7
2024 GMC Sierra 4WD Crew Cab Short Box Elevation's photo

2024 GMC Sierra 4WD Crew Cab Short Box Elevation

27,282 mi.

23 days on market

3GTPUCEK9RG158084

$43,755
Fair Deal
Phil Long Ford Motor City
Colorado Springs, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box SLE's photo

2024 GMC Sierra 4WD Crew Cab Short Box SLE

52,282 mi.

24 days on market

1GTPUBEK7RZ375160

$39,010
Fair DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2020 GMC Sierra 4WD Crew Cab Short Box SLT's photo

2020 GMC Sierra 4WD Crew Cab Short Box SLT

70,188 mi.

24 days on market

3GTU9DEDXLG403171

$40,198
Fair Deal
Super Auto Company Inc
Denver, CO
4.4
2023 GMC Sierra 4WD Crew Cab Standard Box Denali's photo

2023 GMC Sierra 4WD Crew Cab Standard Box Denali

54,072 mi.

24 days on market

1GT49REY9PF141893

$62,649
Fair Deal
Loveland Buick Gmc
Loveland, CO
4.4
2024 GMC Sierra AT4 4WD Crew Cab Short Box's photo

2024 GMC Sierra AT4 4WD Crew Cab Short Box

35,191 mi.

24 days on market

1GTUUEE87RZ219631

$56,698
Fair Deal
Foundation Chevrolet
Wheat Ridge, CO
4.4
2017 GMC Sierra 4WD Crew Cab Short Box SLT's photo

2017 GMC Sierra 4WD Crew Cab Short Box SLT

45,052 mi.

24 days on market

3GTU2NEC5HG402227

$38,995
Fair Deal
Reganis Cdjr
Scottsbluff, NE
4.3
2017 GMC Sierra 4WD Crew Cab Short Box's photo

2017 GMC Sierra 4WD Crew Cab Short Box

131,172 mi.

24 days on market

3GTU2PEJ7HG458017

$27,793
Fair Deal
Springs Automotive Group Platte Ave
Colorado Springs, CO
4.6
2018 GMC Sierra 4WD Double Cab Standard Box SLE's photo

2018 GMC Sierra 4WD Double Cab Standard Box SLE

100,600 mi.

24 days on market

1GTV2MEH7JZ268210

$18,995
Good Deal
Mister Auto
Lakewood, CO
3.8
2018 GMC Sierra 4WD Crew Cab Short Box's photo

2018 GMC Sierra 4WD Crew Cab Short Box

71,783 mi.

24 days on market

3GTU2PEJ5JG331840

$35,000
Fair Deal
Weld County Garage
Greeley, CO
4.6
2021 GMC Sierra 4WD Crew Cab Short Box Elevation's photo

2021 GMC Sierra 4WD Crew Cab Short Box Elevation

70,922 mi.

24 days on market

1GTU9CED5MZ423775

$33,090
Great DealSingle ownerClean title
Groove Toyota
Englewood, CO
4.6
2016 GMC Sierra 4WD Regular Cab Standard Box SLE's photo

2016 GMC Sierra 4WD Regular Cab Standard Box SLE

57,370 mi.

24 days on market

1GTN2MEC1GZ315678

$39,995
Great Deal
Nice Auto Sales
Denver, CO
3.5
2023 GMC Sierra 4WD Crew Cab Short Box Elevation's photo

2023 GMC Sierra 4WD Crew Cab Short Box Elevation

26,082 mi.

25 days on market

1GTUUCED7PZ198438

$48,715
Fair Deal
Auto Mart Usa Parker
Parker, CO
4.7
2024 GMC Sierra AT4 4WD Crew Cab Standard Box SRW's photo

2024 GMC Sierra AT4 4WD Crew Cab Standard Box SRW

66,804 mi.

25 days on market

1GT49VEY3RF246876

$68,597
Good Deal
Auto Mart Usa Parker
Parker, CO
4.7
2024 GMC Sierra 4WD Crew Cab Short Box Denali Ultimate's photo

2024 GMC Sierra 4WD Crew Cab Short Box Denali Ultimate

19,342 mi.

25 days on market

1GTUUHEL4RZ288508

$63,989
Fair Deal
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2025 GMC Sierra Denali 4WD Crew Cab Standard Box SRW's photo

2025 GMC Sierra Denali 4WD Crew Cab Standard Box SRW

12,891 mi.

25 days on market

1GT4UWEY0SF248921

$80,535
Fair DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
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Find Used GMC Sierra in Thornton, CO

In the U.S., the GMC Sierra is available as Chassis Cab, Pickup, and Utility-Service Truck. The best choice typically depends on space needs and personal preference.