1,290 Used Gmc Sierra for Sale Near Thornton, CO
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Sponsored
2006 GMC Sierra 4WD Extended Cab 6 1/2-ft SL1
203,647 mi.
68 days on market
2GTEK19V561286851
$6,995
Great Deal
Rides Unlimited Chicago Inc
Crest Hill, IL
Sponsored
2022 GMC Sierra 4WD Crew Cab Standard Box AT4
26,412 mi.
248 days on market
1GT49PEYXNF261753
$49,498
Import Auto Sales
Golden Valley, MN
Sponsored
2013 GMC Sierra 4WD Extended Cab SLE MWB
178,018 mi.
9 days on market
1GTR2VE79DZ351074
$8,995
Clean title
Morehead Motor Company
Morehead City, NC
2019 GMC Sierra 4WD Crew Cab Short Box SLT
127,434 mi.
20 days on market
3GTU9DED9KG180622
$29,988
Good Deal
The Sharpest Rides
Englewood, CO
4.5
2025 GMC Sierra 4WD Crew Cab Standard Box SLT
5,157 mi.
20 days on market
3GTUUDEL3SG266420
Contact Dealer
Panhandle Automotive Group Llc
Sidney, NE
4.5
2018 GMC Sierra 2WD Crew Cab Short Box SLT
122,783 mi.
20 days on market
3GTP1NEC8JG165562
$23,550
Good Deal
Mike Maroone Chevrolet South
Colorado Springs, CO
4.4
2023 GMC Sierra 4WD Crew Cab Std Box Elevation 3VL
30,769 mi.
20 days on market
1GTPUJEKXPZ137536
$41,243
Fair Deal
Celebration Chevrolet
Aurora, CO
4.3
2017 GMC Sierra 4WD Crew Cab Standard Box
72,575 mi.
20 days on market
1GT12REG7HF119410
$17,999
Great Deal
Fast Motors Llc
Colorado Springs, CO
4.6
2025 GMC Sierra 4WD Crew Cab Short Box Denali Ultimate
7,575 mi.
20 days on market
1GTUUHEL6SZ297930
$68,499
Great Deal
Corwin Toyota Boulder
Boulder, CO
4.1
2012 GMC Sierra 4WD Crew Cab 6.5ft SLE
161,804 mi.
20 days on market
1GT120C84CF122653
$19,980
Great Deal
Berkenkotter Motors
Castle Rock, CO
4.1
2018 GMC Sierra 4WD Double Cab Standard Box
53,336 mi.
21 days on market
1GTV2LECXJZ139716
$32,891
Fair Deal
Daniels Long Chevrolet
Colorado Springs, CO
4.2
2025 GMC Sierra 4WD Crew Cab Standard Box AT4X
14,712 mi.
21 days on market
1GT4UZEY9SF341213
$85,000
Good Deal
Weld County Garage
Greeley, CO
4.6
2015 GMC Sierra 4WD Crew Cab Short Box
139,439 mi.
21 days on market
1GT120E89FF676109
$31,675
Good Deal
Fort Collins Dodge Chrysler Jeep Ram
Fort Collins, CO
4.4
2023 GMC Sierra 4WD Crew Cab Standard Box AT4
82,314 mi.
21 days on market
1GT49PEY9PF135595
$57,655
Good DealSingle owner
Loveland Buick Gmc
Loveland, CO
4.4
2016 GMC Sierra 4WD Crew Cab Short Box SLT
168,052 mi.
21 days on market
3GTU2NEJ1GG196143
$18,488
Great DealClean title
Big Jons Auto
Denver, CO
4.7
2005 GMC Sierra SLT 4WD Crew Cab SWB
343,062 mi.
21 days on market
1GTHK23265F930334
$12,999
Good Deal
Vista Ford Delta
Delta, CO
4.3
2018 GMC Sierra 4WD Crew Cab Short Box SLE
79,185 mi.
21 days on market
3GTU2MEC1JG314565
$27,571
Fair Deal
Schomp Honda
Highlands Ranch, CO
4.5
2016 GMC Sierra 4WD Double Cab Standard Box SLT
139,098 mi.
21 days on market
1GTV2NEC0GZ154021
$19,950
Good Deal
Gearhead Inc
La Junta, CO
4.0
2022 GMC Sierra AT4 4WD Crew Cab Short Box
28,060 mi.
21 days on market
1GTP9EEL8NZ124900
$49,791
Fair Deal
Daniels Long Chevrolet
Colorado Springs, CO
4.2
2023 GMC Sierra 4WD Crew Cab Short Box Denali Ultimate
80,089 mi.
21 days on market
1GTUUHEL4PZ173565
$51,850
Good Deal
George Tubbs Sons Ford Sales Inc
Colby, KS
4.6
2020 GMC Sierra 4WD Crew Cab Short Box AT4
155,023 mi.
21 days on market
1GTP9EELXLZ159094
$29,349
Good Deal
Korf Chrysler Dodge Jeep Ram Yuma
Yuma, CO
4.1
2015 GMC Sierra 4WD Crew Cab Standard Box
102,957 mi.
21 days on market
3GTU2WEC0FG356664
$23,700
Fair Deal
Sterling Auto Sales
Franktown, CO
4.1
2011 GMC Sierra 4WD Crew Cab SLE SWB
153,458 mi.
21 days on market
3GTP2VE33BG215086
$11,970
Fair Deal
Durango Kia
Durango, CO
4.7
Photos coming soon
2003 GMC Sierra 4WD Regular Cab 6 1/2-ft SLE
198,813 mi.
21 days on market
1GTEK14T43Z257513
$10,644
Good DealSingle owner
New Wave Auto Brokers Sales
Denver, CO
4.4
2025 GMC Sierra Elevation 4WD Crew Cab Short Box
33,385 mi.
21 days on market
1GTUUCE8XSZ188515
$52,499
Fair DealSingle owner
Jfr Associates
Littleton, CO
4.5
2023 GMC Sierra 4WD Crew Cab Short Box AT4
67,907 mi.
22 days on market
1GTUUEEL5PZ196917
$48,158
Good DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box Denali
57,743 mi.
22 days on market
3GTUUGED0RG121422
$55,389
Good DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2021 GMC Sierra 4WD Crew Cab Short Box AT4
142,945 mi.
22 days on market
1GTP9EEL1MZ175203
$33,198
Good Deal
Mike Maroone Auto
Longmont, CO
4.4
2024 GMC Sierra 4WD Crew Cab Short Box Denali
31,780 mi.
22 days on market
3GTUUGELXRG352870
$56,998
Good Deal
Mike Maroone Auto
Longmont, CO
4.4
2024 GMC Sierra 4WD Crew Cab Standard Box SLE
76,701 mi.
22 days on market
1GT49MEY1RF175557
$53,485
Good Deal
Town And Country Chevrolet Of Taos
Taos, NM
3.9
2021 GMC Sierra 4WD Crew Cab Short Box Elevation
58,696 mi.
22 days on market
3GTU9CET2MG348802
$37,488
Fair Deal
Johnson Auto Plaza
Brighton, CO
4.2
Sponsored
2006 GMC Sierra 4WD Extended Cab 6 1/2-ft SL1
203,647 mi.
68 days on market
2GTEK19V561286851
$6,995
Great Deal
Rides Unlimited Chicago Inc
Crest Hill, IL
2019 GMC Sierra 4WD Crew Cab Short Box SLT
127,434 mi.
20 days on market
3GTU9DED9KG180622
$29,988
Good Deal
The Sharpest Rides
Englewood, CO
4.5
2025 GMC Sierra 4WD Crew Cab Standard Box SLT
5,157 mi.
20 days on market
3GTUUDEL3SG266420
Contact Dealer
Panhandle Automotive Group Llc
Sidney, NE
4.5
2018 GMC Sierra 2WD Crew Cab Short Box SLT
122,783 mi.
20 days on market
3GTP1NEC8JG165562
$23,550
Good Deal
Mike Maroone Chevrolet South
Colorado Springs, CO
4.4
2023 GMC Sierra 4WD Crew Cab Std Box Elevation 3VL
30,769 mi.
20 days on market
1GTPUJEKXPZ137536
$41,243
Fair Deal
Celebration Chevrolet
Aurora, CO
4.3
2017 GMC Sierra 4WD Crew Cab Standard Box
72,575 mi.
20 days on market
1GT12REG7HF119410
$17,999
Great Deal
Fast Motors Llc
Colorado Springs, CO
4.6
2025 GMC Sierra 4WD Crew Cab Short Box Denali Ultimate
7,575 mi.
20 days on market
1GTUUHEL6SZ297930
$68,499
Great Deal
Corwin Toyota Boulder
Boulder, CO
4.1
2012 GMC Sierra 4WD Crew Cab 6.5ft SLE
161,804 mi.
20 days on market
1GT120C84CF122653
$19,980
Great Deal
Berkenkotter Motors
Castle Rock, CO
4.1
2018 GMC Sierra 4WD Double Cab Standard Box
53,336 mi.
21 days on market
1GTV2LECXJZ139716
$32,891
Fair Deal
Daniels Long Chevrolet
Colorado Springs, CO
4.2
2025 GMC Sierra 4WD Crew Cab Standard Box AT4X
14,712 mi.
21 days on market
1GT4UZEY9SF341213
$85,000
Good Deal
Weld County Garage
Greeley, CO
4.6
2015 GMC Sierra 4WD Crew Cab Short Box
139,439 mi.
21 days on market
1GT120E89FF676109
$31,675
Good Deal
Fort Collins Dodge Chrysler Jeep Ram
Fort Collins, CO
4.4
2023 GMC Sierra 4WD Crew Cab Standard Box AT4
82,314 mi.
21 days on market
1GT49PEY9PF135595
$57,655
Good DealSingle owner
Loveland Buick Gmc
Loveland, CO
4.4
2016 GMC Sierra 4WD Crew Cab Short Box SLT
168,052 mi.
21 days on market
3GTU2NEJ1GG196143
$18,488
Great DealClean title
Big Jons Auto
Denver, CO
4.7
2005 GMC Sierra SLT 4WD Crew Cab SWB
343,062 mi.
21 days on market
1GTHK23265F930334
$12,999
Good Deal
Vista Ford Delta
Delta, CO
4.3
2018 GMC Sierra 4WD Crew Cab Short Box SLE
79,185 mi.
21 days on market
3GTU2MEC1JG314565
$27,571
Fair Deal
Schomp Honda
Highlands Ranch, CO
4.5
2016 GMC Sierra 4WD Double Cab Standard Box SLT
139,098 mi.
21 days on market
1GTV2NEC0GZ154021
$19,950
Good Deal
Gearhead Inc
La Junta, CO
4.0
2022 GMC Sierra AT4 4WD Crew Cab Short Box
28,060 mi.
21 days on market
1GTP9EEL8NZ124900
$49,791
Fair Deal
Daniels Long Chevrolet
Colorado Springs, CO
4.2
2023 GMC Sierra 4WD Crew Cab Short Box Denali Ultimate
80,089 mi.
21 days on market
1GTUUHEL4PZ173565
$51,850
Good Deal
George Tubbs Sons Ford Sales Inc
Colby, KS
4.6
2020 GMC Sierra 4WD Crew Cab Short Box AT4
155,023 mi.
21 days on market
1GTP9EELXLZ159094
$29,349
Good Deal
Korf Chrysler Dodge Jeep Ram Yuma
Yuma, CO
4.1
2015 GMC Sierra 4WD Crew Cab Standard Box
102,957 mi.
21 days on market
3GTU2WEC0FG356664
$23,700
Fair Deal
Sterling Auto Sales
Franktown, CO
4.1
2011 GMC Sierra 4WD Crew Cab SLE SWB
153,458 mi.
21 days on market
3GTP2VE33BG215086
$11,970
Fair Deal
Durango Kia
Durango, CO
4.7
Photos coming soon
2003 GMC Sierra 4WD Regular Cab 6 1/2-ft SLE
198,813 mi.
21 days on market
1GTEK14T43Z257513
$10,644
Good DealSingle owner
New Wave Auto Brokers Sales
Denver, CO
4.4
2025 GMC Sierra Elevation 4WD Crew Cab Short Box
33,385 mi.
21 days on market
1GTUUCE8XSZ188515
$52,499
Fair DealSingle owner
Jfr Associates
Littleton, CO
4.5
2023 GMC Sierra 4WD Crew Cab Short Box AT4
67,907 mi.
22 days on market
1GTUUEEL5PZ196917
$48,158
Good DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box Denali
57,743 mi.
22 days on market
3GTUUGED0RG121422
$55,389
Good DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2021 GMC Sierra 4WD Crew Cab Short Box AT4
142,945 mi.
22 days on market
1GTP9EEL1MZ175203
$33,198
Good Deal
Mike Maroone Auto
Longmont, CO
4.4
2024 GMC Sierra 4WD Crew Cab Short Box Denali
31,780 mi.
22 days on market
3GTUUGELXRG352870
$56,998
Good Deal
Mike Maroone Auto
Longmont, CO
4.4
2024 GMC Sierra 4WD Crew Cab Standard Box SLE
76,701 mi.
22 days on market
1GT49MEY1RF175557
$53,485
Good Deal
Town And Country Chevrolet Of Taos
Taos, NM
3.9
2021 GMC Sierra 4WD Crew Cab Short Box Elevation
58,696 mi.
22 days on market
3GTU9CET2MG348802
$37,488
Fair Deal
Johnson Auto Plaza
Brighton, CO
4.2
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.