1,290 Used Gmc Sierra for Sale Near Thornton, CO
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Sponsored
2018 GMC Sierra 4WD Crew Cab Short Box SLT
163,055 mi.
88 days on market
3GTU2NEC7JG109225
$17,900
Good Deal
Last Chance Auto Sales
Waverly, TN
Sponsored
2015 GMC Sierra 4WD Crew Cab 8ft Work Truck DRW
236,276 mi.
144 days on market
1GT421C86FF578726
$22,995
Roland Holmes Auto Sales
Roanoke Rapids, NC
Sponsored
2024 GMC Sierra 4WD Crew Cab Standard Box AT4
13,915 mi.
354 days on market
1GT49PEY1RF466268
$61,490
Best Price Auto Sales LLC
Boise, ID
2017 GMC Sierra 4WD Crew Cab Short Box SLT
84,649 mi.
31 days on market
3GTU2NEC7HG423127
$26,999
Fair Deal
Janssen Gmc
North Platte, NE
4.4
2018 GMC Sierra 4WD Crew Cab Standard Box Denali
156,970 mi.
31 days on market
1GT12UEY7JF100700
$29,699
Good Deal
Jpl Auto Sales Llc
Denver, CO
4.8
2022 GMC Sierra 4WD Crew Cab Short Box AT4X
74,607 mi.
31 days on market
3GTUUFEL0NG530211
$51,675
Good Deal
Loveland Buick Gmc
Loveland, CO
4.4
2023 GMC Sierra 4WD Crew Cab Short Box Elevation
44,377 mi.
31 days on market
3GTPUCEK7PG241221
$39,355
Good Deal
Loveland Buick Gmc
Loveland, CO
4.4
2025 GMC Sierra 4WD Crew Cab Std Box Elevation 3VL
12,261 mi.
32 days on market
1GTPUJEK9SZ285119
$44,860
Good Deal
Bozarth Chevrolet
Lone Tree, CO
4.5
2023 GMC Sierra Denali 4WD Crew Cab Short Box
35,746 mi.
32 days on market
1GTUUGEL7PZ270219
$54,978
Fair Deal
Clearshift
Loveland, CO
4.8
2015 GMC Sierra 4WD Double Cab Short Box SLE
193,821 mi.
32 days on market
1GT22YEG0FZ122806
$16,791
Good Deal
Stevinson Toyota East
Aurora, CO
4.2
2015 GMC Sierra 4WD Double Cab SLE SWB
173,837 mi.
32 days on market
1GTV2UEC6FZ235646
$14,989
Great DealClean title
Ken Garff Ford Greeley
Greeley, CO
3.7
Photos coming soon
2017 GMC Sierra 4WD Crew Cab Short Box SLT
101,537 mi.
32 days on market
3GTU2NEC3HG342013
Contact Dealer
Car Choice
Denver, CO
4.3
2021 GMC Sierra 4WD Crew Cab Standard Box Denali
71,373 mi.
32 days on market
1GT49REY4MF169533
$58,544
Fair DealSingle owner
Red Rock Gmc
Grand Junction, CO
4.5
2004 GMC Sierra 4WD Extended Cab 6 1/2-ft SLT
199,564 mi.
32 days on market
2GTEK19T341269137
Contact Dealer
Pyramid Motors
Pueblo, CO
4.2
2019 GMC Sierra 4WD Crew Cab Long Box Denali DRW
115,131 mi.
32 days on market
1GT42WEY8KF261471
$47,596
Fair Deal
Flower Subaru
Montrose, CO
4.5
2020 GMC Sierra 4WD Crew Cab Standard Box Denali
43,002 mi.
32 days on market
1GT49REY6LF198594
$55,790
Fair Deal
Autonation Chrysler Jeep West
Golden, CO
4.5
2008 GMC Sierra 4WD Extended Cab 6.5ft SLT
181,541 mi.
32 days on market
1GTHK29KX8E186187
Contact Dealer
Panhandle Automotive Group Scottsbluff
Scottsbluff, NE
3.9
2025 GMC Sierra Denali Ultimate 4WD Crew Cab Short Box
8,996 mi.
32 days on market
1GTUUHEL6SZ147882
$70,879
Fair Deal
Clearshift
Loveland, CO
4.8
2015 GMC Sierra 4WD Crew Cab SLE SWB
191,806 mi.
32 days on market
3GTU2UEC8FG533952
Contact Dealer
Northwest Auto Sales Service Gmc
Meeker, CO
4.4
2015 GMC Sierra 4WD Crew Cab Short Box
116,752 mi.
32 days on market
3GTU2WECXFG346871
$24,291
Fair Deal
Vista Toyota
Casper, WY
4.7
2023 GMC Sierra 4WD Crew Cab Short Box Elevation
37,305 mi.
32 days on market
3GTUUCED3PG101221
$44,125
Fair Deal
Bighorn Toyota
Glenwood Springs, CO
4.5
2023 GMC Sierra 4WD Crew Cab Short Box Denali
27,700 mi.
32 days on market
3GTUUGE81PG343354
$53,336
Fair DealSingle owner
Transwest Gmc
Henderson, CO
4.3
2016 GMC Sierra 4WD Crew Cab Standard Box Denali
102,015 mi.
32 days on market
1GT12UEG3GF127618
$35,464
Fair Deal
Mike Maroone Chevrolet North
Colorado Springs, CO
4.4
2021 GMC Sierra 4WD Crew Cab Standard Box SLT
54,504 mi.
32 days on market
1GT49NEY6MF204095
$50,593
Fair Deal
Weld County Garage
Greeley, CO
4.6
2017 GMC Sierra 4WD Crew Cab Short Box SLT
91,315 mi.
32 days on market
3GTU2NEC9HG239517
$30,789
Fair DealClean title
Mike Ward Infiniti
Highlands Ranch, CO
4.7
2020 GMC Sierra 4WD Crew Cab Standard Box AT4
127,044 mi.
32 days on market
1GT49PE73LF294470
$42,398
Good Deal
Autonation Subaru Arapahoe
Centennial, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box AT4X
41,314 mi.
32 days on market
3GTUUFEL8RG208860
$60,500
Good Deal
Audi Parker
Parker, CO
4.4
2020 GMC Sierra 4WD Crew Cab Standard Box AT4
55,226 mi.
32 days on market
1GT19PEY1LF120280
$56,999
Fair Deal
Fremont Cdjr Casper
Casper, WY
4.4
2026 GMC Sierra 4WD Crew Cab Short Box AT4X
5,079 mi.
32 days on market
3GTUUFEL0TG231055
$73,495
Good Deal
Phil Long Ford Of Chapel Hills
Colorado Springs, CO
4.2
2023 GMC Sierra Denali 4WD Crew Cab Short Box
42,482 mi.
32 days on market
1GTUUGEL0PZ134434
$52,889
Good Deal
Omeara Gmc
Denver, CO
4.2
2024 GMC Sierra 4WD Crew Cab Short Box Denali
36,728 mi.
32 days on market
1GTUUGEL1RZ208236
$58,187
Good Deal
Omeara Gmc
Denver, CO
4.2
Sponsored
2018 GMC Sierra 4WD Crew Cab Short Box SLT
163,055 mi.
88 days on market
3GTU2NEC7JG109225
$17,900
Good Deal
Last Chance Auto Sales
Waverly, TN
2017 GMC Sierra 4WD Crew Cab Short Box SLT
84,649 mi.
31 days on market
3GTU2NEC7HG423127
$26,999
Fair Deal
Janssen Gmc
North Platte, NE
4.4
2018 GMC Sierra 4WD Crew Cab Standard Box Denali
156,970 mi.
31 days on market
1GT12UEY7JF100700
$29,699
Good Deal
Jpl Auto Sales Llc
Denver, CO
4.8
2022 GMC Sierra 4WD Crew Cab Short Box AT4X
74,607 mi.
31 days on market
3GTUUFEL0NG530211
$51,675
Good Deal
Loveland Buick Gmc
Loveland, CO
4.4
2023 GMC Sierra 4WD Crew Cab Short Box Elevation
44,377 mi.
31 days on market
3GTPUCEK7PG241221
$39,355
Good Deal
Loveland Buick Gmc
Loveland, CO
4.4
2025 GMC Sierra 4WD Crew Cab Std Box Elevation 3VL
12,261 mi.
32 days on market
1GTPUJEK9SZ285119
$44,860
Good Deal
Bozarth Chevrolet
Lone Tree, CO
4.5
2023 GMC Sierra Denali 4WD Crew Cab Short Box
35,746 mi.
32 days on market
1GTUUGEL7PZ270219
$54,978
Fair Deal
Clearshift
Loveland, CO
4.8
2015 GMC Sierra 4WD Double Cab Short Box SLE
193,821 mi.
32 days on market
1GT22YEG0FZ122806
$16,791
Good Deal
Stevinson Toyota East
Aurora, CO
4.2
2015 GMC Sierra 4WD Double Cab SLE SWB
173,837 mi.
32 days on market
1GTV2UEC6FZ235646
$14,989
Great DealClean title
Ken Garff Ford Greeley
Greeley, CO
3.7
Photos coming soon
2017 GMC Sierra 4WD Crew Cab Short Box SLT
101,537 mi.
32 days on market
3GTU2NEC3HG342013
Contact Dealer
Car Choice
Denver, CO
4.3
2021 GMC Sierra 4WD Crew Cab Standard Box Denali
71,373 mi.
32 days on market
1GT49REY4MF169533
$58,544
Fair DealSingle owner
Red Rock Gmc
Grand Junction, CO
4.5
2004 GMC Sierra 4WD Extended Cab 6 1/2-ft SLT
199,564 mi.
32 days on market
2GTEK19T341269137
Contact Dealer
Pyramid Motors
Pueblo, CO
4.2
2019 GMC Sierra 4WD Crew Cab Long Box Denali DRW
115,131 mi.
32 days on market
1GT42WEY8KF261471
$47,596
Fair Deal
Flower Subaru
Montrose, CO
4.5
2020 GMC Sierra 4WD Crew Cab Standard Box Denali
43,002 mi.
32 days on market
1GT49REY6LF198594
$55,790
Fair Deal
Autonation Chrysler Jeep West
Golden, CO
4.5
2008 GMC Sierra 4WD Extended Cab 6.5ft SLT
181,541 mi.
32 days on market
1GTHK29KX8E186187
Contact Dealer
Panhandle Automotive Group Scottsbluff
Scottsbluff, NE
3.9
2025 GMC Sierra Denali Ultimate 4WD Crew Cab Short Box
8,996 mi.
32 days on market
1GTUUHEL6SZ147882
$70,879
Fair Deal
Clearshift
Loveland, CO
4.8
2015 GMC Sierra 4WD Crew Cab SLE SWB
191,806 mi.
32 days on market
3GTU2UEC8FG533952
Contact Dealer
Northwest Auto Sales Service Gmc
Meeker, CO
4.4
2015 GMC Sierra 4WD Crew Cab Short Box
116,752 mi.
32 days on market
3GTU2WECXFG346871
$24,291
Fair Deal
Vista Toyota
Casper, WY
4.7
2023 GMC Sierra 4WD Crew Cab Short Box Elevation
37,305 mi.
32 days on market
3GTUUCED3PG101221
$44,125
Fair Deal
Bighorn Toyota
Glenwood Springs, CO
4.5
2023 GMC Sierra 4WD Crew Cab Short Box Denali
27,700 mi.
32 days on market
3GTUUGE81PG343354
$53,336
Fair DealSingle owner
Transwest Gmc
Henderson, CO
4.3
2016 GMC Sierra 4WD Crew Cab Standard Box Denali
102,015 mi.
32 days on market
1GT12UEG3GF127618
$35,464
Fair Deal
Mike Maroone Chevrolet North
Colorado Springs, CO
4.4
2021 GMC Sierra 4WD Crew Cab Standard Box SLT
54,504 mi.
32 days on market
1GT49NEY6MF204095
$50,593
Fair Deal
Weld County Garage
Greeley, CO
4.6
2017 GMC Sierra 4WD Crew Cab Short Box SLT
91,315 mi.
32 days on market
3GTU2NEC9HG239517
$30,789
Fair DealClean title
Mike Ward Infiniti
Highlands Ranch, CO
4.7
2020 GMC Sierra 4WD Crew Cab Standard Box AT4
127,044 mi.
32 days on market
1GT49PE73LF294470
$42,398
Good Deal
Autonation Subaru Arapahoe
Centennial, CO
4.3
2024 GMC Sierra 4WD Crew Cab Short Box AT4X
41,314 mi.
32 days on market
3GTUUFEL8RG208860
$60,500
Good Deal
Audi Parker
Parker, CO
4.4
2020 GMC Sierra 4WD Crew Cab Standard Box AT4
55,226 mi.
32 days on market
1GT19PEY1LF120280
$56,999
Fair Deal
Fremont Cdjr Casper
Casper, WY
4.4
2026 GMC Sierra 4WD Crew Cab Short Box AT4X
5,079 mi.
32 days on market
3GTUUFEL0TG231055
$73,495
Good Deal
Phil Long Ford Of Chapel Hills
Colorado Springs, CO
4.2
2023 GMC Sierra Denali 4WD Crew Cab Short Box
42,482 mi.
32 days on market
1GTUUGEL0PZ134434
$52,889
Good Deal
Omeara Gmc
Denver, CO
4.2
2024 GMC Sierra 4WD Crew Cab Short Box Denali
36,728 mi.
32 days on market
1GTUUGEL1RZ208236
$58,187
Good Deal
Omeara Gmc
Denver, 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.