1,290 Used Gmc Sierra for Sale Near Thornton, CO
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Sponsored
2020 GMC Sierra 4WD Crew Cab Short Box SLT
79,410 mi.
182 days on market
3GTU9DEDXLG126540
$30,999
Car Pros Northshore
Covington, LA
Sponsored
2014 GMC Sierra 4WD Crew Cab SLE MWB
150,204 mi.
96 days on market
3GTU2UEH7EG238111
$12,500
Great Deal
Downer Auto
Barnesville, MN
Sponsored
2018 GMC Sierra 4WD Crew Cab Short Box SLT
126,757 mi.
242 days on market
3GTU2NEC2JG222029
$22,999
Your Choice Autos Waukegan
Waukegan, IL
2020 GMC Sierra 4WD Crew Cab Standard Box Denali
61,052 mi.
14 days on market
1GT49RE7XLF272705
$56,372
Fair DealSingle owner
Markley Honda
Fort Collins, CO
4.6
2024 GMC Sierra AT4X 4WD Crew Cab Standard Box
25,050 mi.
14 days on market
1GT49ZEY9RF310085
$80,586
Fair Deal
Clearshift Loveland
Loveland, CO
4.8
2020 GMC Sierra 4WD Crew Cab Short Box SLT
123,477 mi.
14 days on market
3GTU9DEL3LG218001
$31,793
Good Deal
Springs Automotive Group Platte Ave
Colorado Springs, CO
4.6
2009 GMC Sierra 4WD Crew Cab SLE SWB
136,131 mi.
14 days on market
3GTEK23M19G277758
$14,999
Fair Deal
South Creek Auto
Longmont, CO
4.3
2024 GMC Sierra 4WD Crew Cab Standard Box AT4
46,174 mi.
14 days on market
1GT49PEY7RF403952
$70,000
Good Deal
Mike Maroone Chevrolet South
Colorado Springs, CO
4.4
2018 GMC Sierra 4WD Crew Cab Standard Box SLT
142,256 mi.
14 days on market
1GT12TEY3JF230502
$35,995
Good Deal
Tommys Car Lot
Chadron, NE
4.8
2020 GMC Sierra 4WD Crew Cab Short Box SLT
120,660 mi.
14 days on market
3GTU9DED3LG249578
$27,950
Good DealSingle owner
Sterling Auto Sales
Franktown, CO
4.1
2026 GMC Sierra Denali 4WD Crew Cab Standard Box
13,125 mi.
14 days on market
1GT1UREY6TF103212
$80,198
Fair Deal
Foundation Chevrolet
Wheat Ridge, CO
4.4
2023 GMC Sierra 4WD Crew Cab Short Box AT4
47,761 mi.
14 days on market
1GTUUEE8XPZ223847
$49,990
Fair Deal
Autonation Chrysler Jeep West
Golden, CO
4.5
1992 GMC Sierra
251,967 mi.
14 days on market
2GTEK19K7N1524879
Contact Dealer
Auto Barn
Gering, NE
4.4
2019 GMC Sierra 4WD Crew Cab Short Box SLE
44,908 mi.
15 days on market
1GTP9BEK0KZ378733
$28,210
Fair DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box AT4X
37,086 mi.
15 days on market
3GTUUFELXRG319331
$60,590
Good Deal
Mike Maroone Gmc
Boulder, CO
5.0
2012 GMC Sierra 4WD Crew Cab Standard Box
168,244 mi.
15 days on market
1GT125E84CF216476
$23,499
Fair Deal
Mountain States Toyota
Denver, CO
4.5
2015 GMC Sierra 4WD Double Cab SLT SWB
131,955 mi.
15 days on market
1GTV2VEC4FZ357878
$21,999
Fair Deal
Auto Warehouse
Brighton, CO
4.6
2020 GMC Sierra 4WD Crew Cab Short Box AT4
75,347 mi.
15 days on market
3GTP9EEL6LG352052
$42,995
Fair Deal
Independent Auto Brokers
Greeley, CO
4.5
2017 GMC Sierra 4WD Crew Cab Short Box SLT
129,696 mi.
15 days on market
3GTU2NEC1HG313030
$24,347
Good Deal
Skyline Mitsubishi
Denver, CO
4.3
2020 GMC Sierra 4WD Crew Cab Short Box AT4
130,455 mi.
15 days on market
3GTP9EEL9LG178865
$58,040
Town Country Automall
Alamosa, CO
2023 GMC Sierra 4WD Crew Cab Short Box SLE
29,850 mi.
15 days on market
1GTPUBEK8PZ165115
$39,995
Fair Deal
Wolf Ford Of Alliance
Alliance, NE
4.9
2024 GMC Sierra 4WD Crew Cab Short Box AT4
72,145 mi.
15 days on market
1GTUUEE83RZ131496
$50,224
Good Deal
Autonation Buick Gmc Park Meadows
Lone Tree, CO
4.2
2015 GMC Sierra 4WD Crew Cab SLT SWB
143,128 mi.
15 days on market
3GTU2VEC1FG421760
$22,995
Fair DealSingle ownerClean title
Eagle Chevrolet
Chadron, NE
4.7
2025 GMC Sierra 4WD Crew Cab Standard Box Denali
39,162 mi.
15 days on market
1GT4URE78SF193210
$63,895
Good Deal
Mike Maroone Chevrolet South
Colorado Springs, CO
4.4
2019 GMC Sierra 4WD Crew Cab Short Box SLT
89,167 mi.
15 days on market
3GTU9DED3KG226770
$32,910
Good Deal
Weld County Garage
Greeley, CO
4.6
2020 GMC Sierra 4WD Crew Cab Short Box Denali
89,157 mi.
15 days on market
3GTU9FEL0LG450342
$37,590
Good Deal
Weld County Garage
Greeley, CO
4.6
1993 GMC Sierra
184,880 mi.
15 days on market
1GTDC14K8PZ504893
$14,900
Good Deal
Worldwide Vintage Autos
Denver, CO
4.5
2024 GMC Sierra 4WD Crew Cab Standard Box AT4
56,219 mi.
15 days on market
1GT49PEY9RF224408
$70,796
Good DealSingle owner
Autonation Chevrolet North
Denver, CO
4.1
2015 GMC Sierra 4WD Double Cab SLE SWB
80,647 mi.
15 days on market
1GTV2UEC7FZ151268
$23,888
Fair Deal
Wagner Ford
McCook, NE
4.6
2025 GMC Sierra 4WD Crew Cab Short Box AT4
11,072 mi.
15 days on market
3GTUUEEL7SG108703
$61,299
Fair Deal
Corwin Toyota Colorado Springs
Colorado Springs, CO
4.3
2004 GMC Sierra SLE 4WD Crew Cab SWB
224,270 mi.
15 days on market
1GTHK23274F183325
$14,494
Good Deal
Kissner Motors
Grand Junction, CO
4.3
Sponsored
2020 GMC Sierra 4WD Crew Cab Short Box SLT
79,410 mi.
182 days on market
3GTU9DEDXLG126540
$30,999
Car Pros Northshore
Covington, LA
2020 GMC Sierra 4WD Crew Cab Standard Box Denali
61,052 mi.
14 days on market
1GT49RE7XLF272705
$56,372
Fair DealSingle owner
Markley Honda
Fort Collins, CO
4.6
2024 GMC Sierra AT4X 4WD Crew Cab Standard Box
25,050 mi.
14 days on market
1GT49ZEY9RF310085
$80,586
Fair Deal
Clearshift Loveland
Loveland, CO
4.8
2020 GMC Sierra 4WD Crew Cab Short Box SLT
123,477 mi.
14 days on market
3GTU9DEL3LG218001
$31,793
Good Deal
Springs Automotive Group Platte Ave
Colorado Springs, CO
4.6
2009 GMC Sierra 4WD Crew Cab SLE SWB
136,131 mi.
14 days on market
3GTEK23M19G277758
$14,999
Fair Deal
South Creek Auto
Longmont, CO
4.3
2024 GMC Sierra 4WD Crew Cab Standard Box AT4
46,174 mi.
14 days on market
1GT49PEY7RF403952
$70,000
Good Deal
Mike Maroone Chevrolet South
Colorado Springs, CO
4.4
2018 GMC Sierra 4WD Crew Cab Standard Box SLT
142,256 mi.
14 days on market
1GT12TEY3JF230502
$35,995
Good Deal
Tommys Car Lot
Chadron, NE
4.8
2020 GMC Sierra 4WD Crew Cab Short Box SLT
120,660 mi.
14 days on market
3GTU9DED3LG249578
$27,950
Good DealSingle owner
Sterling Auto Sales
Franktown, CO
4.1
2026 GMC Sierra Denali 4WD Crew Cab Standard Box
13,125 mi.
14 days on market
1GT1UREY6TF103212
$80,198
Fair Deal
Foundation Chevrolet
Wheat Ridge, CO
4.4
2023 GMC Sierra 4WD Crew Cab Short Box AT4
47,761 mi.
14 days on market
1GTUUEE8XPZ223847
$49,990
Fair Deal
Autonation Chrysler Jeep West
Golden, CO
4.5
1992 GMC Sierra
251,967 mi.
14 days on market
2GTEK19K7N1524879
Contact Dealer
Auto Barn
Gering, NE
4.4
2019 GMC Sierra 4WD Crew Cab Short Box SLE
44,908 mi.
15 days on market
1GTP9BEK0KZ378733
$28,210
Fair DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box AT4X
37,086 mi.
15 days on market
3GTUUFELXRG319331
$60,590
Good Deal
Mike Maroone Gmc
Boulder, CO
5.0
2012 GMC Sierra 4WD Crew Cab Standard Box
168,244 mi.
15 days on market
1GT125E84CF216476
$23,499
Fair Deal
Mountain States Toyota
Denver, CO
4.5
2015 GMC Sierra 4WD Double Cab SLT SWB
131,955 mi.
15 days on market
1GTV2VEC4FZ357878
$21,999
Fair Deal
Auto Warehouse
Brighton, CO
4.6
2020 GMC Sierra 4WD Crew Cab Short Box AT4
75,347 mi.
15 days on market
3GTP9EEL6LG352052
$42,995
Fair Deal
Independent Auto Brokers
Greeley, CO
4.5
2017 GMC Sierra 4WD Crew Cab Short Box SLT
129,696 mi.
15 days on market
3GTU2NEC1HG313030
$24,347
Good Deal
Skyline Mitsubishi
Denver, CO
4.3
2020 GMC Sierra 4WD Crew Cab Short Box AT4
130,455 mi.
15 days on market
3GTP9EEL9LG178865
$58,040
Town Country Automall
Alamosa, CO
2023 GMC Sierra 4WD Crew Cab Short Box SLE
29,850 mi.
15 days on market
1GTPUBEK8PZ165115
$39,995
Fair Deal
Wolf Ford Of Alliance
Alliance, NE
4.9
2024 GMC Sierra 4WD Crew Cab Short Box AT4
72,145 mi.
15 days on market
1GTUUEE83RZ131496
$50,224
Good Deal
Autonation Buick Gmc Park Meadows
Lone Tree, CO
4.2
2015 GMC Sierra 4WD Crew Cab SLT SWB
143,128 mi.
15 days on market
3GTU2VEC1FG421760
$22,995
Fair DealSingle ownerClean title
Eagle Chevrolet
Chadron, NE
4.7
2025 GMC Sierra 4WD Crew Cab Standard Box Denali
39,162 mi.
15 days on market
1GT4URE78SF193210
$63,895
Good Deal
Mike Maroone Chevrolet South
Colorado Springs, CO
4.4
2019 GMC Sierra 4WD Crew Cab Short Box SLT
89,167 mi.
15 days on market
3GTU9DED3KG226770
$32,910
Good Deal
Weld County Garage
Greeley, CO
4.6
2020 GMC Sierra 4WD Crew Cab Short Box Denali
89,157 mi.
15 days on market
3GTU9FEL0LG450342
$37,590
Good Deal
Weld County Garage
Greeley, CO
4.6
1993 GMC Sierra
184,880 mi.
15 days on market
1GTDC14K8PZ504893
$14,900
Good Deal
Worldwide Vintage Autos
Denver, CO
4.5
2024 GMC Sierra 4WD Crew Cab Standard Box AT4
56,219 mi.
15 days on market
1GT49PEY9RF224408
$70,796
Good DealSingle owner
Autonation Chevrolet North
Denver, CO
4.1
2015 GMC Sierra 4WD Double Cab SLE SWB
80,647 mi.
15 days on market
1GTV2UEC7FZ151268
$23,888
Fair Deal
Wagner Ford
McCook, NE
4.6
2025 GMC Sierra 4WD Crew Cab Short Box AT4
11,072 mi.
15 days on market
3GTUUEEL7SG108703
$61,299
Fair Deal
Corwin Toyota Colorado Springs
Colorado Springs, CO
4.3
2004 GMC Sierra SLE 4WD Crew Cab SWB
224,270 mi.
15 days on market
1GTHK23274F183325
$14,494
Good Deal
Kissner Motors
Grand Junction, CO
4.3
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.