1,292 Used Gmc Sierra for Sale Near Thornton, CO
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Sponsored
2017 GMC Sierra 4WD Double Cab Standard Box SLE
86,053 mi.
549 days on market
1GTV2MECXHZ152207
$17,989
The Internet Car Lot Omaha
Omaha, NE
Sponsored
2015 GMC Sierra 4WD Crew Cab SLT SWB
1 mi.
300 days on market
3GTU2VEC1FG438249
$16,900
Great Deal
Red Point Auto Sales
Mission, TX
Sponsored
2025 GMC Sierra 4WD Crew Cab Standard Box AT4
45,972 mi.
12 days on market
1GT4UPEY0SF329374
$72,265
Good Deal
Utah Truck Country
Lehi, UT
2019 GMC Sierra 4WD Crew Cab Short Box SLE
73,119 mi.
3 days on market
1GTU9BED6KZ397128
$32,234
Fair DealSingle owner
Loveland Buick Gmc
Loveland, CO
4.4
2022 GMC Sierra 4WD Crew Cab Short Box Elevation
60,142 mi.
3 days on market
3GTUUCED9NG600523
$41,999
Fair Deal
Autonation Usa Colorado Springs
Colorado Springs, CO
4.6
2014 GMC Sierra 4WD Regular Cab Work Truck 8ft
117,177 mi.
3 days on market
1GT02ZCG1EF166278
$16,599
Good Deal
Autonation Usa Denver 104
Northglenn, CO
4.6
2022 GMC Sierra 4WD Crew Cab Short Box Denali
45,243 mi.
4 days on market
3GTUUGEL1NG675067
$49,488
Fair Deal
Johnson Auto Plaza
Brighton, CO
4.2
2023 GMC Sierra 4WD Crew Cab Short Box SLT
52,941 mi.
4 days on market
3GTUUDED7PG147432
$44,697
Good DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2025 GMC Sierra 4WD Crew Cab Standard Box AT4
11,887 mi.
4 days on market
1GT4UPEY3SF136877
$78,510
Fair DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
Photos coming soon
2017 GMC Sierra 4WD Double Cab Standard Box SLE
85,639 mi.
4 days on market
1GTV2MECXHZ385715
Contact Dealer
Car Choice
Denver, CO
4.3
2020 GMC Sierra SLT 4WD Crew Cab Short Box
110,772 mi.
4 days on market
1GTU9DEL4LZ153546
$33,199
Fair Deal
Phil Long Ford Motor City
Colorado Springs, CO
4.3
2022 GMC Sierra 4WD Crew Cab Short Box Denali Ultimate
75,881 mi.
4 days on market
1GTUUHET7NZ620676
$49,998
Great DealSingle ownerClean title
Transwest Gmc
Henderson, CO
4.3
2023 GMC Sierra 4WD Crew Cab Short Box Denali
47,247 mi.
4 days on market
1GTUUGE80PZ112798
$51,995
Fair Deal
Vinces Gm Center
Burlington, CO
4.3
2022 GMC Sierra 4WD Regular Cab Standard Box Pro
59,539 mi.
4 days on market
3GTNUAEK4NG508145
$27,994
Fair Deal
Discount Motors
Pueblo, CO
3.8
1994 GMC Sierra
229,252 mi.
4 days on market
2GTEK19K7R1535368
Contact Dealer
Lashley Auto Sales
Mitchell, NE
3.9
2017 GMC Sierra 4WD Crew Cab Chassis
113,246 mi.
4 days on market
1GD42VCY2HF216849
Contact Dealer
John Elway Chevrolet
Englewood, CO
4.3
2022 GMC Sierra Denali 4WD Crew Cab Short Box
60,796 mi.
4 days on market
3GTUUGED9NG629057
$47,512
Fair Deal
Larry H Miller Chrysler Dodge Ram Fiat Denver
Denver, CO
4.0
2026 GMC Sierra 4WD Crew Cab Standard Box AT4X
3,049 mi.
4 days on market
1GT4UZEY4TF166161
Contact Dealer
Bozarth Chevrolet
Lone Tree, CO
4.5
2024 GMC Sierra SLE 4WD Crew Cab Short Box
23,471 mi.
4 days on market
1GTUUBED4RZ370969
$40,587
Good Deal
Omeara Gmc
Denver, CO
4.2
2025 GMC Sierra 4WD Crew Cab Short Box SLT
45,717 mi.
4 days on market
1GTUUDED2SZ226421
$45,180
Good Deal
Omeara Gmc
Denver, CO
4.2
2025 GMC Sierra 4WD Crew Cab Short Box AT4X
7,352 mi.
4 days on market
3GTUUFEL6SG234539
$74,999
Fair Deal
Casper Gmc Cadillac
Casper, WY
4.6
2025 GMC Sierra 4WD Crew Cab Short Box SLT
6,426 mi.
4 days on market
3GTUUDED1SG282446
$53,798
Fair Deal
Autonation Toyota Arapahoe
Centennial, CO
4.5
2020 GMC Sierra 4WD Crew Cab Short Box Elevation
140,408 mi.
4 days on market
3GTU9CED3LG411364
$25,995
Good Deal
Berkenkotter Motors
Castle Rock, CO
4.1
2019 GMC Sierra 4WD Crew Cab Standard Box Denali
154,944 mi.
4 days on market
1GT42WEY3KF206314
Contact Dealer
Red Rock Gmc
Grand Junction, CO
4.5
2021 GMC Sierra 4WD Crew Cab Standard Box Denali
89,492 mi.
4 days on market
1GT49WEY1MF154373
Contact Dealer
Red Rock Gmc
Grand Junction, CO
4.5
2025 GMC Sierra 4WD Regular Cab Standard Box Pro
8,617 mi.
4 days on market
3GTNUAEK2SG165265
Contact Dealer
Platinum Motors Co
Denver, CO
5.0
2024 GMC Sierra 4WD Crew Cab Short Box SLT
35,100 mi.
4 days on market
3GTUUDED3RG286721
$48,687
Fair Deal
Larry H Miller Colorado Jeep
Aurora, CO
4.0
2021 GMC Sierra 4WD Crew Cab Short Box SLT
81,816 mi.
4 days on market
3GTU9DED9MG370763
$44,999
Fair Deal
Team Chevrolet Gmc
Scottsbluff, NE
4.4
2018 GMC Sierra 4WD Crew Cab Standard Box Denali
99,681 mi.
4 days on market
1GT12UEY2JF209727
$47,793
Fair Deal
Springs Automotive Group Platte Ave
Colorado Springs, CO
4.6
2021 GMC Sierra 4WD Crew Cab Short Box AT4
108,405 mi.
4 days on market
3GTP9EED1MG237529
$36,000
Good Deal
Weld County Garage
Greeley, CO
4.6
2025 GMC Sierra 4WD Crew Cab Standard Box SLT
44,500 mi.
4 days on market
1GT4UNEY3SF235283
$65,000
Good Deal
Weld County Garage
Greeley, CO
4.6
Sponsored
2017 GMC Sierra 4WD Double Cab Standard Box SLE
86,053 mi.
549 days on market
1GTV2MECXHZ152207
$17,989
The Internet Car Lot Omaha
Omaha, NE
2019 GMC Sierra 4WD Crew Cab Short Box SLE
73,119 mi.
3 days on market
1GTU9BED6KZ397128
$32,234
Fair DealSingle owner
Loveland Buick Gmc
Loveland, CO
4.4
2022 GMC Sierra 4WD Crew Cab Short Box Elevation
60,142 mi.
3 days on market
3GTUUCED9NG600523
$41,999
Fair Deal
Autonation Usa Colorado Springs
Colorado Springs, CO
4.6
2014 GMC Sierra 4WD Regular Cab Work Truck 8ft
117,177 mi.
3 days on market
1GT02ZCG1EF166278
$16,599
Good Deal
Autonation Usa Denver 104
Northglenn, CO
4.6
2022 GMC Sierra 4WD Crew Cab Short Box Denali
45,243 mi.
4 days on market
3GTUUGEL1NG675067
$49,488
Fair Deal
Johnson Auto Plaza
Brighton, CO
4.2
2023 GMC Sierra 4WD Crew Cab Short Box SLT
52,941 mi.
4 days on market
3GTUUDED7PG147432
$44,697
Good DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
2025 GMC Sierra 4WD Crew Cab Standard Box AT4
11,887 mi.
4 days on market
1GT4UPEY3SF136877
$78,510
Fair DealSingle owner
Alpine Buick Gmc
Highlands Ranch, CO
4.3
Photos coming soon
2017 GMC Sierra 4WD Double Cab Standard Box SLE
85,639 mi.
4 days on market
1GTV2MECXHZ385715
Contact Dealer
Car Choice
Denver, CO
4.3
2020 GMC Sierra SLT 4WD Crew Cab Short Box
110,772 mi.
4 days on market
1GTU9DEL4LZ153546
$33,199
Fair Deal
Phil Long Ford Motor City
Colorado Springs, CO
4.3
2022 GMC Sierra 4WD Crew Cab Short Box Denali Ultimate
75,881 mi.
4 days on market
1GTUUHET7NZ620676
$49,998
Great DealSingle ownerClean title
Transwest Gmc
Henderson, CO
4.3
2023 GMC Sierra 4WD Crew Cab Short Box Denali
47,247 mi.
4 days on market
1GTUUGE80PZ112798
$51,995
Fair Deal
Vinces Gm Center
Burlington, CO
4.3
2022 GMC Sierra 4WD Regular Cab Standard Box Pro
59,539 mi.
4 days on market
3GTNUAEK4NG508145
$27,994
Fair Deal
Discount Motors
Pueblo, CO
3.8
1994 GMC Sierra
229,252 mi.
4 days on market
2GTEK19K7R1535368
Contact Dealer
Lashley Auto Sales
Mitchell, NE
3.9
2017 GMC Sierra 4WD Crew Cab Chassis
113,246 mi.
4 days on market
1GD42VCY2HF216849
Contact Dealer
John Elway Chevrolet
Englewood, CO
4.3
2022 GMC Sierra Denali 4WD Crew Cab Short Box
60,796 mi.
4 days on market
3GTUUGED9NG629057
$47,512
Fair Deal
Larry H Miller Chrysler Dodge Ram Fiat Denver
Denver, CO
4.0
2026 GMC Sierra 4WD Crew Cab Standard Box AT4X
3,049 mi.
4 days on market
1GT4UZEY4TF166161
Contact Dealer
Bozarth Chevrolet
Lone Tree, CO
4.5
2024 GMC Sierra SLE 4WD Crew Cab Short Box
23,471 mi.
4 days on market
1GTUUBED4RZ370969
$40,587
Good Deal
Omeara Gmc
Denver, CO
4.2
2025 GMC Sierra 4WD Crew Cab Short Box SLT
45,717 mi.
4 days on market
1GTUUDED2SZ226421
$45,180
Good Deal
Omeara Gmc
Denver, CO
4.2
2025 GMC Sierra 4WD Crew Cab Short Box AT4X
7,352 mi.
4 days on market
3GTUUFEL6SG234539
$74,999
Fair Deal
Casper Gmc Cadillac
Casper, WY
4.6
2025 GMC Sierra 4WD Crew Cab Short Box SLT
6,426 mi.
4 days on market
3GTUUDED1SG282446
$53,798
Fair Deal
Autonation Toyota Arapahoe
Centennial, CO
4.5
2020 GMC Sierra 4WD Crew Cab Short Box Elevation
140,408 mi.
4 days on market
3GTU9CED3LG411364
$25,995
Good Deal
Berkenkotter Motors
Castle Rock, CO
4.1
2019 GMC Sierra 4WD Crew Cab Standard Box Denali
154,944 mi.
4 days on market
1GT42WEY3KF206314
Contact Dealer
Red Rock Gmc
Grand Junction, CO
4.5
2021 GMC Sierra 4WD Crew Cab Standard Box Denali
89,492 mi.
4 days on market
1GT49WEY1MF154373
Contact Dealer
Red Rock Gmc
Grand Junction, CO
4.5
2025 GMC Sierra 4WD Regular Cab Standard Box Pro
8,617 mi.
4 days on market
3GTNUAEK2SG165265
Contact Dealer
Platinum Motors Co
Denver, CO
5.0
2024 GMC Sierra 4WD Crew Cab Short Box SLT
35,100 mi.
4 days on market
3GTUUDED3RG286721
$48,687
Fair Deal
Larry H Miller Colorado Jeep
Aurora, CO
4.0
2021 GMC Sierra 4WD Crew Cab Short Box SLT
81,816 mi.
4 days on market
3GTU9DED9MG370763
$44,999
Fair Deal
Team Chevrolet Gmc
Scottsbluff, NE
4.4
2018 GMC Sierra 4WD Crew Cab Standard Box Denali
99,681 mi.
4 days on market
1GT12UEY2JF209727
$47,793
Fair Deal
Springs Automotive Group Platte Ave
Colorado Springs, CO
4.6
2021 GMC Sierra 4WD Crew Cab Short Box AT4
108,405 mi.
4 days on market
3GTP9EED1MG237529
$36,000
Good Deal
Weld County Garage
Greeley, CO
4.6
2025 GMC Sierra 4WD Crew Cab Standard Box SLT
44,500 mi.
4 days on market
1GT4UNEY3SF235283
$65,000
Good Deal
Weld County Garage
Greeley, 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.