Used Gray GMC for Sale in Boone, CO

409 results

Sort by:

2024 GMC Sierra 2500HD

AT4 Crew Cab 4WD

45,825 miles

$62,899

Year:: 2024
Make:: GMC
Model:: Sierra 2500HD
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 With Kalahari Accents
Transmission:: Automatic
Mileage:: 45,825
Stock #:: RF277602
VIN:: 1GT49PE77RF277602

Sponsored by AutoNation Dodge RAM Arapahoe

2023 GMC Yukon

Denali 4WD

37,453 miles

$62,971

Year:: 2023
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:: 16 MPG
Fuel type:: Gasoline
Interior color:: Brown (Beige)
Transmission:: Automatic
Mileage:: 37,453
Stock #:: B260947A
VIN:: 1GKS2DKL7PR164356

2022 GMC Sierra 1500 Limited

SLT Crew Cab 4WD

71,585 miles

$35,397

Year:: 2022
Make:: GMC
Model:: Sierra 1500 Limited
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Gray (Satin Steel Metallic)
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black
Transmission:: Automatic
Mileage:: 71,585
Stock #:: P10214
VIN:: 1GTU9DET3NZ208068

2021 GMC Terrain

SLT AWD

87,385 miles

$17,499

Year:: 2021
Make:: GMC
Model:: Terrain
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 170 hp 1.5L I4
Exterior color:: Graphite Gray Metallic
Combined gas mileage:: 26 MPG
Fuel type:: Gasoline
Interior color:: Jet Black
Transmission:: 9-Speed Automatic
Mileage:: 87,385
Stock #:: ML354546
VIN:: 3GKALVEV0ML354546

Home delivery

2024 GMC Sierra 1500

Elevation Crew Cab 4WD

37,318 miles

$43,451

Great Deal

$820/mo est.

Home delivery from Snyder, TX

Price includes $3,456 shipping

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:: Black
Transmission:: Automatic
Mileage:: 37,318
Stock #:: R260118A
VIN:: 3GTUUCED9RG193891

Home delivery

2011 GMC Acadia

SLE-1 AWD

78,975 miles

$8,134

Good Deal

$160/mo est.

Home delivery from Burr Ridge, IL

Price includes $1,344 shipping

Year:: 2011
Make:: GMC
Model:: Acadia
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: All-Wheel Drive
Engine:: 288 hp 3.6L V6
Exterior color:: Cyber Gray Metallic
Fuel type:: Gasoline
Interior color:: Black (Ebony)
Transmission:: 6-Speed Automatic Overdrive
Mileage:: 78,975
Stock #:: P3515
VIN:: 1GKKVPED1BJ129946

2015 GMC Sierra 1500

Denali Crew Cab 4WD

90,036 miles

$24,987

Year:: 2015
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:: 19 MPG
Fuel type:: Gasoline
Interior color:: Brown (Tan)
Transmission:: Automatic
Mileage:: 90,036
Stock #:: YFG249397
VIN:: 3GTU2WEC5FG249397

Home delivery

2019 GMC Yukon XL

SLT 4WD

147,087 miles

$22,537

Fair Deal

$441/mo est.

Home delivery from Lubbock, TX

Price includes $546 shipping

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)
Fuel type:: Gasoline
Interior color:: Jet Black
Transmission:: 6-Speed Automatic Overdrive
Mileage:: 147,087
Stock #:: KR171040
VIN:: 1GKS2GKC1KR171040

2024 GMC Sierra 2500HD

AT4 Crew Cab 4WD

45,825 miles

$62,899

Year:: 2024
Make:: GMC
Model:: Sierra 2500HD
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 With Kalahari Accents
Transmission:: Automatic
Mileage:: 45,825
Stock #:: RF277602
VIN:: 1GT49PE77RF277602

2021 GMC Sierra 1500

AT4 Crew Cab 4WD

107,734 miles

$32,987

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 Metallic)
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black With Kalahari Accents
Transmission:: Automatic
Mileage:: 107,734
Stock #:: MG339451
VIN:: 3GTU9EET4MG339451

Preparing for a close up...

Photos coming soon

Home delivery

2017 GMC Yukon XL

SLT RWD

117,999 miles

$18,341

Great Deal

$359/mo est.

Home delivery from Bosque Farms, NM

Price includes $346 shipping

Year:: 2017
Make:: GMC
Model:: Yukon XL
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: 4X2
Engine:: 355 hp 5.3L V8 Flex Fuel Vehicle
Exterior color:: Gray
Combined gas mileage:: 19 MPG
Fuel type:: Flex Fuel Vehicle
Interior color:: Gray
Transmission:: Automatic
Mileage:: 117,999
Stock #:: 371516PU
VIN:: 1GKS1GKC0HR371516

Preparing for a close up...

Photos coming soon

Home delivery

2021 GMC Sierra 1500

Denali Crew Cab 4WD

52,196 miles

$44,047

Fair Deal

$854/mo est.

Home delivery from Thornton, CO

Price includes $159 shipping

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:: 17 MPG
Fuel type:: Gasoline
Interior color:: Jet Black
Transmission:: Automatic
Mileage:: 52,196
Stock #:: 8172GP
VIN:: 3GTU9FEL4MG264952

Preparing for a close up...

Photos coming soon

2020 GMC Terrain

SLT AWD

101,895 miles

$12,998

Year:: 2020
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:: 101,895
Stock #:: 15013
VIN:: 3GKALVEV2LL204937

Preparing for a close up...

Photos coming soon

2016 GMC Sierra 1500

Denali Crew Cab 4WD

107,718 miles

$25,999

Year:: 2016
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
Combined gas mileage:: 18 MPG
Fuel type:: Gasoline
Interior color:: Black
Transmission:: 8-Speed Automatic
Mileage:: 107,718
Stock #:: 100042
VIN:: 3GTU2PEJ5GG100042

Preparing for a close up...

Photos coming soon

2021 GMC Yukon

Denali 4WD

66,535 miles

$48,658

Year:: 2021
Make:: GMC
Model:: Yukon
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 420 hp 6.2L V8
Exterior color:: Gray (Dark Sky Metallic)
Combined gas mileage:: 16 MPG
Fuel type:: Gasoline
Interior color:: Dark Walnut/Very Dark Ash Gray
Transmission:: Automatic
Mileage:: 66,535
Stock #:: MR164864
VIN:: 1GKS2DKLXMR164864

Preparing for a close up...

Photos coming soon

Home delivery

2020 GMC Terrain

SLT AWD

63,493 miles

$18,288

Good Deal

$358/mo est.

Home delivery from Denver, CO

Price includes $89 shipping

Year:: 2020
Make:: GMC
Model:: Terrain
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 1.5L I4
Exterior color:: Gray
Fuel type:: Gasoline
Interior color:: Gray
Transmission:: 9-Speed Automatic Overdrive
Mileage:: 63,493
Stock #:: 3889G
VIN:: 3GKALVEVXLL336411

Preparing for a close up...

Photos coming soon

2025 GMC Sierra 1500

AT4 Crew Cab 4WD

23,839 miles

$56,929

Year:: 2025
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
Fuel type:: Gasoline
Interior color:: Jet Black
Transmission:: 10-Speed Automatic
Mileage:: 23,839
Stock #:: KM134565
VIN:: 1GTUUEEL8SZ134565

Preparing for a close up...

Photos coming soon

2022 GMC Sierra 1500 Limited

Elevation Crew Cab 4WD

39,233 miles

$38,471

Year:: 2022
Make:: GMC
Model:: Sierra 1500 Limited
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Gray
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 39,233
Stock #:: 2H60941A
VIN:: 1GTU9CET7NZ219679

Preparing for a close up...

Photos coming soon

Home delivery

2020 GMC Yukon XL

Denali 4WD

96,933 miles

$33,534

Good Deal

$656/mo est.

Home delivery from Bradenton, FL

Price includes $1,834 shipping

Year:: 2020
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 (Dark Sky Metallic)
Combined gas mileage:: 17 MPG
Fuel type:: Gasoline
Interior color:: Cocoa/Shale
Transmission:: Automatic
Mileage:: 96,933
Stock #:: T104019
VIN:: 1GKS2HKJ8LR104019

Preparing for a close up...

Photos coming soon

2023 GMC Yukon

Denali 4WD

37,453 miles

$62,971

Year:: 2023
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:: 16 MPG
Fuel type:: Gasoline
Interior color:: Brown (Beige)
Transmission:: Automatic
Mileage:: 37,453
Stock #:: B260947A
VIN:: 1GKS2DKL7PR164356

Preparing for a close up...

Photos coming soon

Home delivery

2025 GMC Sierra 1500

Pro Crew Cab 4WD

32,982 miles

$37,737

Good Deal

$707/mo est.

Home delivery from Tampa, FL

Price includes $1,740 shipping

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:: Thunderstorm Gray
Combined gas mileage:: 12 MPG
Fuel type:: Gasoline
Interior color:: Black
Transmission:: Automatic
Mileage:: 32,982
Stock #:: 22558
VIN:: 1GTUUAED1SZ106334

Preparing for a close up...

Photos coming soon

Home delivery

2016 GMC Acadia

Denali AWD

115,923 miles

$12,101

Good Deal

$237/mo est.

Home delivery from Edmonds, WA

Price includes $1,110 shipping

Year:: 2016
Make:: GMC
Model:: Acadia
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: All-Wheel Drive
Engine:: 288 hp 3.6L V6
Exterior color:: Gray (Iridium Metallic)
Combined gas mileage:: 18 MPG
Fuel type:: Gasoline
Interior color:: Cocoa Dune
Transmission:: 6-Speed Automatic
Mileage:: 115,923
Stock #:: 158326
VIN:: 1GKKVTKD0GJ158326

Preparing for a close up...

Photos coming soon

Home delivery

2015 GMC Yukon XL

SLT 4WD

195,694 miles

$14,094

Fair Deal

$276/mo est.

Home delivery from Rigby, ID

Price includes $1,599 shipping

Year:: 2015
Make:: GMC
Model:: Yukon XL
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 355 hp 5.3L V8 Flex Fuel Vehicle
Exterior color:: Gray (Iridium Metallic)
Combined gas mileage:: 18 MPG
Fuel type:: Flex Fuel Vehicle
Interior color:: Jet Black, Perforated Leather-Appointed Seat Trim
Transmission:: Automatic
Mileage:: 195,694
Stock #:: 1528323T
VIN:: 1GKS2HKC8FR528323

Preparing for a close up...

Photos coming soon

2025 GMC Sierra 1500

Denali Crew Cab 4WD

24,516 miles

$52,646

Year:: 2025
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:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black
Transmission:: Automatic
Mileage:: 24,516
Stock #:: SG176960
VIN:: 3GTUUGE85SG176960

A better way to discover your best deal

Let us help you find a car you’ll love.

Used Gray GMC for Sale in Boone, CO

2024 GMC Sierra 2500HD

$62,899

2023 GMC Yukon

$62,971

2022 GMC Sierra 1500 Limited

$35,397

2021 GMC Terrain

$17,499

2024 GMC Sierra 1500

$43,451

2011 GMC Acadia

$8,134

2015 GMC Sierra 1500

$24,987

2019 GMC Yukon XL

$22,537

2024 GMC Sierra 2500HD

$62,899

2021 GMC Sierra 1500

$32,987

2017 GMC Yukon XL

$18,341

2021 GMC Sierra 1500

$44,047

2020 GMC Terrain

$12,998

2016 GMC Sierra 1500

$25,999

2021 GMC Yukon

$48,658

2020 GMC Terrain

$18,288

2025 GMC Sierra 1500

$56,929

2022 GMC Sierra 1500 Limited

$38,471

2020 GMC Yukon XL

$33,534

2023 GMC Yukon

$62,971

2025 GMC Sierra 1500

$37,737

2016 GMC Acadia

$12,101

2015 GMC Yukon XL

$14,094

2025 GMC Sierra 1500

$52,646

Shop by Color

A better way to discover your best deal