Used Gray GMC for Sale inCastle Rock, CO
277 vehicles found
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2025
- 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:
- Thunderstorm Gray
- Fuel type:
- Biodiesel
- Interior color:
- Black (Obsidian Rush)
- Transmission:
- Automatic
- Mileage:
- 68,209
- Stock #:
- SF142830
- VIN:
- 1GT4UZEY2SF142830
Sponsored by AutoNation Chrysler Dodge Jeep RAM Southwest
2025 GMC Sierra 2500HD
AT4X Crew Cab 4WD
68,209 mi
Littleton, CO
21 mi away
Great Deal
$64,299
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 252 hp 2L I4
- Exterior color:
- Graphite Gray Metallic
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 101,305
- Stock #:
- U17039
- VIN:
- 3GKALXEX3JL138554
Sponsored Listing
2018 GMC Terrain
Denali AWD
101,305 mi
Henderson, CO
35 mi away
Fair Deal
$17,393
- 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
- Combined gas mileage:
- 21 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 106,192
- Stock #:
- 184759
- VIN:
- 1GKKNULS9LZ184759
Sponsored Listing
2020 GMC Acadia
SLT AWD
106,192 mi
Aurora, CO
23 mi away
Fair Deal
$18,698
- 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
- Combined gas mileage:
- 21 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 57,944
- Stock #:
- 26T1146B
- VIN:
- 1GKKNULS1KZ176587
2019 GMC Acadia
SLT-1 AWD
57,944 mi
Lone Tree, CO
14 mi away
Fair Deal
$21,631
- 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:
- Gray
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 41,894
- Stock #:
- C216995A
- VIN:
- 3GTUUCED4RG277469
Price drop
-$1,088
2024 GMC Sierra 1500
Elevation Crew Cab 4WD
41,894 mi
Colorado Springs, CO
31 mi away
Great Deal
$42,784
$41,696
- 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
35 mi away
Good Deal
$30,093
- 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:
- Automatic
- Mileage:
- 27,964
- Stock #:
- U16957
- VIN:
- 1GTG6FEN8N1289845
2022 GMC Canyon
AT4 Crew Cab 4WD with Leather
27,964 mi
Henderson, CO
35 mi away
Fair Deal
$34,593
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Gray (Satin Steel)
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 83,660
- Stock #:
- RM16991
- VIN:
- 3GTU9CET7MG455800
Price drop
-$1,001
2021 GMC Sierra 1500
Elevation Crew Cab 4WD
83,660 mi
Colorado Springs, CO
31 mi away
Good Deal
$32,998
$31,997
- Year:
- 2018
- 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:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 127,660
- Stock #:
- 1898D
- VIN:
- 1GKKNULS1JZ192190
New arrival
2018 GMC Acadia
SLT-1 AWD
127,660 mi
Englewood, CO
21 mi away
Fair Deal
$11,999
- 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/Dark Atmosphere
- Transmission:
- 8-Speed Automatic
- Mileage:
- 209,161
- Stock #:
- TB260069A
- VIN:
- 1GKS2CKJ2GR420797
Price drop
-$1,799
2016 GMC Yukon
Denali 4WD
209,161 mi
Broomfield, CO
39 mi away
Great Deal
$12,899
$11,799
- Year:
- 2018
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 137 hp 1.6L I4 Diesel
- Exterior color:
- Gray
- Combined gas mileage:
- 33 MPG
- Fuel type:
- Diesel
- Interior color:
- Gray
- Transmission:
- 6-Speed Automatic
- Mileage:
- 81,972
- Stock #:
- 326004
- VIN:
- 3GKALWEUXJL326004
2018 GMC Terrain
SLT Diesel AWD
81,972 mi
Denver, CO
27 mi away
Fair Deal
$15,323
- Year:
- 2017
- Make:
- GMC
- Model:
- Yukon
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8 Flex Fuel Vehicle
- Exterior color:
- Gray
- Fuel type:
- Flex Fuel Vehicle
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic Overdrive
- Mileage:
- 125,984
- Stock #:
- 1832
- VIN:
- 1GKS2BKC7HR312608
2017 GMC Yukon
SLT 4WD
125,984 mi
Englewood, CO
19 mi away
Fair Deal
$21,898
- 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 (Dark Sky Metallic)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate
- Transmission:
- Automatic
- Mileage:
- 13,668
- Stock #:
- DL9050D
- VIN:
- 1GTU9DELXMZ380838
2021 GMC Sierra 1500
SLT Crew Cab 4WD
13,668 mi
Denver, CO
22 mi away
Fair Deal
$43,500
- 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
- Transmission:
- Automatic
- Mileage:
- 94,143
- Stock #:
- NZ209993
- VIN:
- 1GTU9FEL5NZ209993
2022 GMC Sierra 1500 Limited
Denali Crew Cab 4WD
94,143 mi
Littleton, CO
18 mi away
Great Deal
$32,990
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 310 hp 2.7L I4
- Exterior color:
- Gray (Dark Sky Metallic)
- Combined gas mileage:
- 20 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 129,158
- Stock #:
- KZ339517
- VIN:
- 1GTP9BEK8KZ339517
New arrival
2019 GMC Sierra 1500
SLE Crew Cab 4WD
129,158 mi
Littleton, CO
18 mi away
Fair Deal
$23,222
- Year:
- 2022
- 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)
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate
- Mileage:
- 53,627
- Stock #:
- G187967
- VIN:
- 1GKS2GKD9NR187967
2022 GMC Yukon XL
SLT 4WD
53,627 mi
Boulder, CO
49 mi away
Great Deal
$46,750
- Year:
- 2023
- 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
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate, Perforated Leather-Appointed Fr
- Transmission:
- Automatic
- Mileage:
- 52,886
- Stock #:
- TPG147432
- VIN:
- 3GTUUDED7PG147432
2023 GMC Sierra 1500
SLT Crew Cab 4WD
52,886 mi
Highlands Ranch, CO
15 mi away
Good Deal
$43,540
- Year:
- 2013
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 315 hp 5.3L V8 Flex Fuel Vehicle
- Exterior color:
- Stealth Gray Metallic
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Flex Fuel Vehicle
- Interior color:
- Dark Titanium/Light Titanium
- Transmission:
- 6-Speed Automatic
- Mileage:
- 121,377
- Stock #:
- DG317812
- VIN:
- 3GTP2WE77DG317812
Price drop
-$1,010
2013 GMC Sierra 1500
SLT Crew Cab 4WD
121,377 mi
Lone Tree, CO
14 mi away
Fair Deal
$17,999
$16,989
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray (Dark Sky Metallic)
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 42,012
- Stock #:
- 435670A
- VIN:
- 1GKS2BKD5MR481531
New arrival
2021 GMC Yukon
SLT 4WD
42,012 mi
Highlands Ranch, CO
15 mi away
Good Deal
$45,789
- Year:
- 2024
- Make:
- GMC
- Model:
- Acadia
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 328 hp 2.5L I4
- Exterior color:
- Gray
- Combined gas mileage:
- 21 MPG
- Fuel type:
- Gasoline
- Interior color:
- After Dark, Perforated Leather-Appointed Seat Trim
- Transmission:
- Automatic
- Mileage:
- 42,190
- Stock #:
- ARJ180778
- VIN:
- 1GKENRKS0RJ180778
2024 GMC Acadia
Denali AWD
42,190 mi
Highlands Ranch, CO
15 mi away
Good Deal
$45,689
- Year:
- 2025
- 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
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black, Leather-Appointed Front Seat Trim
- Transmission:
- Automatic
- Mileage:
- 14,671
- Stock #:
- PSZ259116
- VIN:
- 1GTUUCED5SZ259116
New arrival
2025 GMC Sierra 1500
Elevation Crew Cab 4WD
14,671 mi
Highlands Ranch, CO
15 mi away
Fair Deal
$51,281
- Year:
- 2016
- Make:
- GMC
- Model:
- Yukon XL
- 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:
- Automatic
- Mileage:
- 150,804
- Stock #:
- U16573A
- VIN:
- 1GKS2HKJ3GR100028
2016 GMC Yukon XL
Denali 4WD
150,804 mi
Centennial, CO
16 mi away
Fair Deal
$18,497
- Year:
- 2021
- 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:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black/Kalahari
- Transmission:
- 8-Speed Automatic
- Mileage:
- 51,804
- Stock #:
- G279384
- VIN:
- 1GTG6FEN5M1279384
2021 GMC Canyon
AT4 Crew Cab 4WD with Cloth
51,804 mi
Boulder, CO
49 mi away
Good Deal
$29,110
- Year:
- 2024
- Make:
- GMC
- Model:
- Terrain
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 175 hp 1.5L I4
- Exterior color:
- Gray
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 9-Speed Automatic
- Mileage:
- 37,901
- Stock #:
- SH 367899
- VIN:
- 3GKALTEG3RL367899
New arrival
Sponsored Listing
2024 GMC Terrain
SLE AWD
37,901 mi
Littleton, CO
15 mi away
Fair Deal
$23,990
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