Used Gray GMC for Sale inLongmont, CO
524 vehicles found
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- Thunderstorm Gray
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 10-Speed Automatic
- Mileage:
- 20,805
- Stock #:
- KM142525
- VIN:
- 1GT4UTE72SF142525
Sponsored by ClearShift
2025 GMC Sierra 3500HD
SLE Crew Cab 4WD
20,805 mi
Highlands Ranch, CO
42 mi away
Fair Deal
$56,640
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 2500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 470 hp 6.6L V8 Biodiesel
- Exterior color:
- Gray
- Fuel type:
- Biodiesel
- Transmission:
- Automatic
- Mileage:
- 40,937
- Stock #:
- 26T1103B
- VIN:
- 1GT49REYXRF138701
Sponsored Listing
2024 GMC Sierra 2500HD
Denali Crew Cab 4WD
40,937 mi
Lone Tree, CO
43 mi away
Fair Deal
$69,998
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Gray (Dark Sky Metallic)
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 59,968
- Stock #:
- P183486
- VIN:
- 1GT49WEY7LF183486
Sponsored Listing
2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
59,968 mi
Longmont, CO
3 mi away
Fair Deal
$58,620
- Year:
- 2019
- Make:
- GMC
- Model:
- Acadia
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 310 hp 3.6L V6
- Exterior color:
- Gray (Iridium Metallic)
- Combined gas mileage:
- 21 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 89,465
- Stock #:
- KZ100738
- VIN:
- 1GKKNXLSXKZ100738
Price drop
-$1,355
2019 GMC Acadia
Denali AWD
89,465 mi
Englewood, CO
38 mi away
Good Deal
$20,346
$19,690
- Year:
- 2019
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Cocoa/Dune
- Transmission:
- 6-Speed Automatic
- Mileage:
- 76,838
- Stock #:
- KR243962
- VIN:
- 1GKS2GKC2KR243962
New arrival
2019 GMC Yukon XL
SLT 4WD
76,838 mi
Lone Tree, CO
43 mi away
Good Deal
$29,999
- Year:
- 2020
- Make:
- GMC
- Model:
- Acadia
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 310 hp 3.6L V6
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 21 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 116,489
- Stock #:
- 16337A
- VIN:
- 1GKKNXLS3LZ209950
Price drop
-$505
2020 GMC Acadia
Denali AWD
116,489 mi
Brighton, CO
21 mi away
Great Deal
$19,230
$18,725
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Thunderstorm Gray
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Diesel
- Interior color:
- Black (Obsidian Rush)
- Transmission:
- Automatic
- Mileage:
- 34,402
- Stock #:
- TG216910A
- VIN:
- 3GTUUFE84RG148832
2024 GMC Sierra 1500
AT4X Crew Cab 4WD
34,402 mi
Thornton, CO
20 mi away
Good Deal
$59,776
- Year:
- 2020
- Make:
- GMC
- Model:
- Yukon
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (TAN)
- Transmission:
- Automatic
- Mileage:
- 85,007
- Stock #:
- 265906
- VIN:
- 1GKS1DKCXLR265906
2020 GMC Yukon
SLT Standard Edition RWD
85,007 mi
Home delivery from Tampa, FL
Price includes $1,536 shipping
Good Deal
$28,316
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 1500 Limited
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 91,075
- Stock #:
- NG104158
- VIN:
- 3GTP9EEL6NG104158
2022 GMC Sierra 1500 Limited
AT4 Crew Cab 4WD
91,075 mi
Lone Tree, CO
43 mi away
Great Deal
$34,327
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 142,945
- Stock #:
- L175203
- VIN:
- 1GTP9EEL1MZ175203
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
142,945 mi
Longmont, CO
3 mi away
Great Deal
$30,025
- Year:
- 2020
- Make:
- GMC
- Model:
- Yukon
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Gray (Dark Sky Metallic)
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 104,411
- Stock #:
- MP7511
- VIN:
- 1GKS1CKJ1LR138275
New arrival
2020 GMC Yukon
Denali RWD
104,411 mi
Northglenn, CO
20 mi away
Fair Deal
$30,789
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Thunderstorm Gray
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black (Obsidian Rush)
- Transmission:
- Automatic
- Mileage:
- 37,086
- Stock #:
- G319331
- VIN:
- 3GTUUFELXRG319331
2024 GMC Sierra 1500
AT4X Crew Cab 4WD
37,086 mi
Boulder, CO
12 mi away
Great Deal
$54,350
- Year:
- 2022
- Make:
- GMC
- Model:
- Canyon
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 308 hp 3.6L V6
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 20 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black/Kalahari
- Transmission:
- 8-Speed Automatic
- Mileage:
- 25,881
- Stock #:
- 260169
- VIN:
- 1GTG6FEN9N1304868
2022 GMC Canyon
AT4 Crew Cab 4WD with Leather
25,881 mi
Parker, CO
34 mi away
Fair Deal
$35,168
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 133,019
- Stock #:
- 334979
- VIN:
- 1GTU9BED4KZ334979
2019 GMC Sierra 1500
SLE Crew Cab 4WD
133,019 mi
Aurora, CO
31 mi away
Great Deal
$22,294
- Year:
- 2017
- Make:
- GMC
- Model:
- Yukon
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Gray
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 87,110
- Stock #:
- T27049
- VIN:
- 1GKS2CKJ2HR250457
2017 GMC Yukon
Denali 4WD
87,110 mi
Longmont, CO
1 mi away
Good Deal
$26,999
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior color:
- Gray (Dark Sky Metallic)
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 98,996
- Stock #:
- U16967
- VIN:
- 3GTU9CED7MG173732
2021 GMC Sierra 1500
Elevation Crew Cab 4WD
98,996 mi
Henderson, CO
23 mi away
Fair Deal
$33,093
- Year:
- 2017
- Make:
- GMC
- Model:
- Yukon
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Gray (Iridium Metallic)
- Fuel type:
- Gasoline
- Interior color:
- Cocoa/Shale
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 117,372
- Stock #:
- G398963
- VIN:
- 1GKS2CKJ0HR398963
Price drop
-$1,725
2017 GMC Yukon
Denali 4WD
117,372 mi
Boulder, CO
12 mi away
Good Deal
$25,020
$24,190
- Year:
- 2019
- Make:
- GMC
- Model:
- Acadia
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 310 hp 3.6L V6
- Exterior color:
- Gray (Dark Sky Metallic)
- Combined gas mileage:
- 21 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 135,854
- Stock #:
- U16947
- VIN:
- 1GKKNULS7KZ243256
Price drop
-$399
2019 GMC Acadia
SLT-1 AWD
135,854 mi
Henderson, CO
23 mi away
Fair Deal
$14,593
$14,194
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Thunderstorm Gray
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 39,747
- Stock #:
- 730294
- VIN:
- 1GTUUCED1RZ248026
New arrival
2024 GMC Sierra 1500
Elevation Crew Cab 4WD
39,747 mi
Englewood, CO
42 mi away
Great Deal
$42,990
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- Thunderstorm Gray
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 10-Speed Automatic
- Mileage:
- 20,805
- Stock #:
- KM142525
- VIN:
- 1GT4UTE72SF142525
2025 GMC Sierra 3500HD
SLE Crew Cab 4WD
20,805 mi
Highlands Ranch, CO
42 mi away
Fair Deal
$56,640
- Year:
- 2023
- Make:
- GMC
- Model:
- Acadia
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 228 hp 2L I4
- Exterior color:
- Gray
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- Automatic
- Mileage:
- 22,373
- Stock #:
- 28518065
- VIN:
- 1GKKNUL45PZ101240
2023 GMC Acadia
SLT AWD
22,373 mi
Loveland, CO
19 mi away
Good Deal
$30,998
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 1.5L I4
- Exterior color:
- Gray
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 120,151
- Stock #:
- 244232
- VIN:
- 3GKALVEV3JL244232
2018 GMC Terrain
SLT AWD
120,151 mi
Denver, CO
35 mi away
Great Deal
$11,699
- Year:
- 2016
- Make:
- GMC
- Model:
- Yukon
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Gray (Iridium Metallic)
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Cocoa/Shale
- Transmission:
- 8-Speed Automatic
- Mileage:
- 157,565
- Stock #:
- GR399245
- VIN:
- 1GKS2CKJXGR399245
2016 GMC Yukon
Denali 4WD
157,565 mi
Parker, CO
47 mi away
Fair Deal
$18,990
- Year:
- 2022
- Make:
- GMC
- Model:
- Yukon
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray (Satin Steel Metallic)
- Fuel type:
- Gasoline
- Interior color:
- Black
- Mileage:
- 44,910
- Stock #:
- NR289932C
- VIN:
- 1GKS2BKD3NR289932
Sponsored Listing
2022 GMC Yukon
SLT 4WD
44,910 mi
Parker, CO
47 mi away
Fair Deal
$50,599
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