1,292 Used Gmc Sierra for Sale Near Thornton, CO
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Sponsored
2019 GMC Sierra 4WD Crew Cab Short Box AT4
66,372 mi.
69 days on market
3GTP9EEL7KG310651
$39,995
Certified Auto
Oneonta, NY
Sponsored
2003 GMC Sierra 4WD Extended Cab 6 1/2-ft SLE
149,375 mi.
75 days on market
2GTEK19T131204026
$9,995
Good Deal
Southern Select Auto Sales
Medina, OH
Sponsored
2015 GMC Sierra 4WD Crew Cab SLE SWB
108,278 mi.
472 days on market
3GTU2UEC8FG242450
$24,995
Fair Deal
Momentum Motor Group
Lancaster, SC
2018 GMC Sierra 4WD Crew Cab Short Box
121,507 mi.
12 days on market
3GTU2PEJ7JG146592
$28,988
Good Deal
Family Trucks And Vans
Denver, CO
4.1
2016 GMC Sierra 4WD Crew Cab Short Box SLT
139,224 mi.
20 days on market
3GTU2NEC7GG115244
$23,331
Green Light Auto Sales
Colorado Springs, CO
4.9
2022 GMC Sierra 4WD Crew Cab Std Box Elevation 3VL
68,111 mi.
33 days on market
3GTPUJEK3NG591737
$34,222
Green Light Auto Sales
Colorado Springs, CO
4.9
2014 GMC Sierra 4WD Crew Cab Short Box
84,758 mi.
33 days on market
3GTU2WEJ8EG511748
$29,988
Fair DealSingle owner
Family Trucks And Vans
Denver, CO
4.1
New listing
2015 GMC Sierra 4WD Crew Cab SLT SWB
154,043 mi.
1 day on market
3GTU2VEC1FG434119
Contact Dealer
Grand Junction Chy Jeep Dod Inc
Grand Junction, CO
4.5
New listing
2012 GMC Sierra 4WD Crew Cab SLE SWB
118,334 mi.
1 day on market
3GTP2VE70CG164246
Contact Dealer
South Colorado Springs Nissan
Colorado Springs, CO
4.3
New listing
2020 GMC Sierra 4WD Regular Cab Long Box
36,609 mi.
1 day on market
3GTN9AEF2LG217421
Contact Dealer
Clean title
Alpine Buick Gmc
Highlands Ranch, CO
4.3
New listing
2021 GMC Sierra 4WD Crew Cab Short Box SLT
56,808 mi.
1 day on market
1GTU9DED0MZ166787
Contact Dealer
Clean title
Alpine Buick Gmc
Highlands Ranch, CO
4.3
New listing
2023 GMC Sierra 4WD Crew Cab Short Box AT4
60,636 mi.
1 day on market
1GTUUEE80PZ223680
Contact Dealer
Ken Garff Ford Greeley
Greeley, CO
3.7
New listing
2021 GMC Sierra 4WD Crew Cab Short Box SLT
50,056 mi.
1 day on market
3GTU9DET0MG134686
Contact Dealer
Mcdonald Toyota Greeley
Greeley, CO
4.3
New listing
2024 GMC Sierra 4WD Crew Cab Standard Box AT4
21,676 mi.
1 day on market
1GT49PEYXRF180516
$74,998
Fair DealSingle ownerClean title
Transwest Gmc
Henderson, CO
4.3
New listing
2022 GMC Sierra Denali 4WD Crew Cab Standard Box SRW
47,974 mi.
1 day on market
1GT49WEY9NF312914
$59,999
Good Deal
Autonation Buick Gmc West
Golden, CO
4.3
New listing
2021 GMC Sierra 4WD Crew Cab Short Box SLT
33,731 mi.
1 day on market
3GTU9DED3MG339167
$44,346
Fair Deal
Autonation Usa Denver Broadway
Littleton, CO
4.6
New listing
2015 GMC Sierra 4WD Crew Cab Short Box
158,681 mi.
1 day on market
1GT120E85FF556713
Contact Dealer
Transwest Automotive Group
Denver, CO
4.3
New listing
2024 GMC Sierra 4WD Crew Cab Standard Box AT4X
14,477 mi.
1 day on market
1GT49ZEY5RF443796
$83,586
Fair Deal
Clearshift Loveland
Loveland, CO
4.8
New listing
2019 GMC Sierra 4WD Crew Cab Short Box
93,684 mi.
1 day on market
1GTU9FEL0KZ171066
Contact Dealer
Alpine Buick Gmc
Highlands Ranch, CO
4.3
New listing
2025 GMC Sierra 4WD Crew Cab Short Box AT4
11,044 mi.
1 day on market
3GTUUEE84SG232651
$67,629
Fair DealSingle owner
Halladay Buick Gmc
Cheyenne, WY
3.7
New listing
2021 GMC Sierra 4WD Crew Cab Short Box AT4
79,697 mi.
1 day on market
3GTU9EET4MG106749
$38,998
Fair Deal
Autonation Chrysler Dodge Jeep Ram Arapahoe
Centennial, CO
4.1
New listing
2025 GMC Sierra 4WD Crew Cab Short Box AT4X
14,447 mi.
1 day on market
3GTUUFE82SG324332
$69,118
Fair Deal
John Elway Credit Center
Englewood, CO
4.5
New listing
2018 GMC Sierra 4WD Crew Cab Short Box SLT
58,907 mi.
1 day on market
3GTU2NER0JG334722
$33,633
Fair Deal
Mcdonald Toyota Of Fort Morgan
Fort Morgan, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box AT4X
46,475 mi.
2 days on market
3GTUUFE83RG356457
$59,900
Good DealSingle owner
Pedersen Toyota
Fort Collins, CO
4.5
2025 GMC Sierra 4WD Crew Cab Short Box AT4
46,313 mi.
2 days on market
1GTUUEELXSZ279994
$54,988
Good Deal
Johnson Auto Plaza
Brighton, CO
4.2
2023 GMC Sierra 4WD Crew Cab Standard Box Denali
55,680 mi.
2 days on market
1GT49REY0PF128806
$64,310
Fair Deal
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2025 GMC Sierra 4WD Crew Cab Standard Box AT4
39,907 mi.
2 days on market
1GT4UVEY4SF115749
$75,629
Great DealSingle ownerClean title
Halladay Buick Gmc
Cheyenne, WY
3.7
2025 GMC Sierra 4WD Crew Cab Standard Box AT4
41,542 mi.
2 days on market
1GT4UVEY0SF131754
$75,629
Great DealSingle ownerClean title
Halladay Buick Gmc
Cheyenne, WY
3.7
2022 GMC Sierra 4WD Crew Cab Short Box AT4X
80,464 mi.
2 days on market
3GTUUFEL1NG623349
Contact Dealer
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2017 GMC Sierra 4WD Crew Cab Chassis
164,299 mi.
2 days on market
1GD42VCY1HF172732
$28,883
Good Deal
A Z Import Auto Sales
Fort Collins, CO
4.4
2022 GMC Sierra 4WD Crew Cab Long Box DRW Denali
82,648 mi.
2 days on market
1GT49WEY4NF119876
$58,472
Good Deal
Brighton Ford
Brighton, CO
4.3
2021 GMC Sierra 4WD Crew Cab Short Box SLT
57,500 mi.
2 days on market
1GTU9DED7MZ311212
Contact Dealer
Single ownerClean title
Korf Chrysler Dodge Jeep Ram
Sterling, CO
3.9
2017 GMC Sierra 4WD Crew Cab Standard Box Denali
167,621 mi.
2 days on market
1GT12UEY3HF242472
Contact Dealer
Ed Bozarth Chevrolet And Buick Inc
Grand Junction, CO
4.6
Sponsored
2019 GMC Sierra 4WD Crew Cab Short Box AT4
66,372 mi.
69 days on market
3GTP9EEL7KG310651
$39,995
Certified Auto
Oneonta, NY
2018 GMC Sierra 4WD Crew Cab Short Box
121,507 mi.
12 days on market
3GTU2PEJ7JG146592
$28,988
Good Deal
Family Trucks And Vans
Denver, CO
4.1
2016 GMC Sierra 4WD Crew Cab Short Box SLT
139,224 mi.
20 days on market
3GTU2NEC7GG115244
$23,331
Green Light Auto Sales
Colorado Springs, CO
4.9
2022 GMC Sierra 4WD Crew Cab Std Box Elevation 3VL
68,111 mi.
33 days on market
3GTPUJEK3NG591737
$34,222
Green Light Auto Sales
Colorado Springs, CO
4.9
2014 GMC Sierra 4WD Crew Cab Short Box
84,758 mi.
33 days on market
3GTU2WEJ8EG511748
$29,988
Fair DealSingle owner
Family Trucks And Vans
Denver, CO
4.1
New listing
2015 GMC Sierra 4WD Crew Cab SLT SWB
154,043 mi.
1 day on market
3GTU2VEC1FG434119
Contact Dealer
Grand Junction Chy Jeep Dod Inc
Grand Junction, CO
4.5
New listing
2012 GMC Sierra 4WD Crew Cab SLE SWB
118,334 mi.
1 day on market
3GTP2VE70CG164246
Contact Dealer
South Colorado Springs Nissan
Colorado Springs, CO
4.3
New listing
2020 GMC Sierra 4WD Regular Cab Long Box
36,609 mi.
1 day on market
3GTN9AEF2LG217421
Contact Dealer
Clean title
Alpine Buick Gmc
Highlands Ranch, CO
4.3
New listing
2021 GMC Sierra 4WD Crew Cab Short Box SLT
56,808 mi.
1 day on market
1GTU9DED0MZ166787
Contact Dealer
Clean title
Alpine Buick Gmc
Highlands Ranch, CO
4.3
New listing
2023 GMC Sierra 4WD Crew Cab Short Box AT4
60,636 mi.
1 day on market
1GTUUEE80PZ223680
Contact Dealer
Ken Garff Ford Greeley
Greeley, CO
3.7
New listing
2021 GMC Sierra 4WD Crew Cab Short Box SLT
50,056 mi.
1 day on market
3GTU9DET0MG134686
Contact Dealer
Mcdonald Toyota Greeley
Greeley, CO
4.3
New listing
2024 GMC Sierra 4WD Crew Cab Standard Box AT4
21,676 mi.
1 day on market
1GT49PEYXRF180516
$74,998
Fair DealSingle ownerClean title
Transwest Gmc
Henderson, CO
4.3
New listing
2022 GMC Sierra Denali 4WD Crew Cab Standard Box SRW
47,974 mi.
1 day on market
1GT49WEY9NF312914
$59,999
Good Deal
Autonation Buick Gmc West
Golden, CO
4.3
New listing
2021 GMC Sierra 4WD Crew Cab Short Box SLT
33,731 mi.
1 day on market
3GTU9DED3MG339167
$44,346
Fair Deal
Autonation Usa Denver Broadway
Littleton, CO
4.6
New listing
2015 GMC Sierra 4WD Crew Cab Short Box
158,681 mi.
1 day on market
1GT120E85FF556713
Contact Dealer
Transwest Automotive Group
Denver, CO
4.3
New listing
2024 GMC Sierra 4WD Crew Cab Standard Box AT4X
14,477 mi.
1 day on market
1GT49ZEY5RF443796
$83,586
Fair Deal
Clearshift Loveland
Loveland, CO
4.8
New listing
2019 GMC Sierra 4WD Crew Cab Short Box
93,684 mi.
1 day on market
1GTU9FEL0KZ171066
Contact Dealer
Alpine Buick Gmc
Highlands Ranch, CO
4.3
New listing
2025 GMC Sierra 4WD Crew Cab Short Box AT4
11,044 mi.
1 day on market
3GTUUEE84SG232651
$67,629
Fair DealSingle owner
Halladay Buick Gmc
Cheyenne, WY
3.7
New listing
2021 GMC Sierra 4WD Crew Cab Short Box AT4
79,697 mi.
1 day on market
3GTU9EET4MG106749
$38,998
Fair Deal
Autonation Chrysler Dodge Jeep Ram Arapahoe
Centennial, CO
4.1
New listing
2025 GMC Sierra 4WD Crew Cab Short Box AT4X
14,447 mi.
1 day on market
3GTUUFE82SG324332
$69,118
Fair Deal
John Elway Credit Center
Englewood, CO
4.5
New listing
2018 GMC Sierra 4WD Crew Cab Short Box SLT
58,907 mi.
1 day on market
3GTU2NER0JG334722
$33,633
Fair Deal
Mcdonald Toyota Of Fort Morgan
Fort Morgan, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box AT4X
46,475 mi.
2 days on market
3GTUUFE83RG356457
$59,900
Good DealSingle owner
Pedersen Toyota
Fort Collins, CO
4.5
2025 GMC Sierra 4WD Crew Cab Short Box AT4
46,313 mi.
2 days on market
1GTUUEELXSZ279994
$54,988
Good Deal
Johnson Auto Plaza
Brighton, CO
4.2
2023 GMC Sierra 4WD Crew Cab Standard Box Denali
55,680 mi.
2 days on market
1GT49REY0PF128806
$64,310
Fair Deal
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2025 GMC Sierra 4WD Crew Cab Standard Box AT4
39,907 mi.
2 days on market
1GT4UVEY4SF115749
$75,629
Great DealSingle ownerClean title
Halladay Buick Gmc
Cheyenne, WY
3.7
2025 GMC Sierra 4WD Crew Cab Standard Box AT4
41,542 mi.
2 days on market
1GT4UVEY0SF131754
$75,629
Great DealSingle ownerClean title
Halladay Buick Gmc
Cheyenne, WY
3.7
2022 GMC Sierra 4WD Crew Cab Short Box AT4X
80,464 mi.
2 days on market
3GTUUFEL1NG623349
Contact Dealer
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2017 GMC Sierra 4WD Crew Cab Chassis
164,299 mi.
2 days on market
1GD42VCY1HF172732
$28,883
Good Deal
A Z Import Auto Sales
Fort Collins, CO
4.4
2022 GMC Sierra 4WD Crew Cab Long Box DRW Denali
82,648 mi.
2 days on market
1GT49WEY4NF119876
$58,472
Good Deal
Brighton Ford
Brighton, CO
4.3
2021 GMC Sierra 4WD Crew Cab Short Box SLT
57,500 mi.
2 days on market
1GTU9DED7MZ311212
Contact Dealer
Single ownerClean title
Korf Chrysler Dodge Jeep Ram
Sterling, CO
3.9
2017 GMC Sierra 4WD Crew Cab Standard Box Denali
167,621 mi.
2 days on market
1GT12UEY3HF242472
Contact Dealer
Ed Bozarth Chevrolet And Buick Inc
Grand Junction, CO
4.6
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.