Mike Maroone Cadillac

Gebhardt BMW

EchoPark Automotive Denver (Thornton)

O'Meara Volkswagen of Thornton

Emich Volkswagen of Boulder

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Mike Maroone Chevrolet GMC Longmont

Stevinson Hyundai of Frederick

AutoNation Buick GMC West

Foundation Chevrolet CADILLAC

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O'Meara Ford

Fowler Kia of Longmont

Crossroads Hyundai

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AutoNation Subaru West

Prestige Chrysler Dodge Jeep Inc

Victory Motors of Colorado

Shortline Buick GMC

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6-Cylinder

Gasoline

Used

Acadia

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Used 2019 GMC Acadia SLT

Used 2019 GMC Acadia SLT Boulder CO 80301

Automatic

Fullsize Crew Cab

Truck

6-Cylinder Turbo

Diesel

Sierra 1500

Used 2021 GMC Sierra 1500 AT4

Used 2021 GMC Sierra 1500 AT4 Littleton CO 80129

Certified

AT4X AEV Edition

Certified 2024 GMC Sierra 1500 AT4X w/ AT4X AEV Edition

Certified 2024 GMC Sierra 1500 AT4X w/ AT4X AEV Edition Loveland CO 80538

AT4X

Midsize

4-Cylinder Turbo

Terrain

Used 2023 GMC Terrain Denali

Used 2023 GMC Terrain Denali Boulder CO 80301

Denali

8-Cylinder

Flexible Fuel

Yukon

Premium Edition

Open Road Package

HD Trailering Package

Used 2018 GMC Yukon SLT w/ Premium Edition

Used 2018 GMC Yukon SLT w/ Premium Edition Centennial CO 80112

Denali Reserve Package

New 2025 GMC Sierra 1500 Denali w/ Denali Reserve Package

New 2025 GMC Sierra 1500 Denali w/ Denali Reserve Package Loveland CO 80538

AT4 Value Package

Technology Package

Driver Alert Package II

Used 2021 GMC Sierra 1500 AT4 w/ AT4 Value Package

Used 2021 GMC Sierra 1500 AT4 w/ AT4 Value Package Boulder CO 80301

Denali Premium Package

License Plate Front Mounting Package

Used 2020 GMC Terrain Denali w/ Denali Premium Package

Used 2020 GMC Terrain Denali w/ Denali Premium Package Boulder CO 80301

Sierra 2500

Used 2022 GMC Sierra 2500 SLE

Used 2022 GMC Sierra 2500 SLE Denver CO 80234

8-Cylinder Turbo

Sierra 3500

Gooseneck/5TH Wheel Prep Package

LPO, Hitch Package

New 2025 GMC Sierra 3500 Denali w/ Denali Reserve Package

New 2025 GMC Sierra 3500 Denali w/ Denali Reserve Package Castle Rock CO 80104

Used 2020 GMC Terrain SLT

Used 2020 GMC Terrain SLT Denver CO 80234

Used 2023 GMC Sierra 1500 Elevation

Used 2023 GMC Sierra 1500 Elevation Boulder CO 80301

Elevation

Trailering Package

LPO, Floor Liner Package

Certified 2024 GMC Acadia Elevation w/ Trailering Package

Certified 2024 GMC Acadia Elevation w/ Trailering Package Aurora CO 80012

Texas Edition SLT Premium Package

X31 Off-Road and Protection Package

Driver Alert Package I

Used 2021 GMC Sierra 1500 SLT

Used 2021 GMC Sierra 1500 SLT Thornton CO 80233

Luxury Package

Used 2024 GMC Acadia AT4 w/ Luxury Package

Used 2024 GMC Acadia AT4 w/ Luxury Package Longmont CO 80504

Used 2018 GMC Sierra 1500 4x4 Double Cab

Used 2018 GMC Sierra 1500 4x4 Double Cab Denver CO 80234

4x4 Double Cab

Denali Ultimate Package

Gooseneck/5th Wheel Prep Package

Used 2021 GMC Sierra 2500 Denali w/ Denali Ultimate Package

Used 2021 GMC Sierra 2500 Denali w/ Denali Ultimate Package Littleton CO 80129

Used 2025 GMC Sierra 1500 Elevation

Used 2025 GMC Sierra 1500 Elevation Denver CO 80234

SLE Convenience Package

Preferred Package

X31 Off-Road Package

Used 2023 GMC Sierra 2500 SLE w/ SLE Convenience Package

Used 2023 GMC Sierra 2500 SLE w/ SLE Convenience Package Denver CO 80234

Yukon XL

Used 2022 GMC Yukon XL AT4

Used 2022 GMC Yukon XL AT4 Littleton CO 80129

Used 2021 GMC Yukon Denali

Used 2021 GMC Yukon Denali Boulder CO 80301

Used 2022 GMC Terrain SLT

Used 2022 GMC Terrain SLT Denver CO 80234

Used 2024 GMC Terrain SLT

Used 2024 GMC Terrain SLT Denver CO 80234

AT4 Premium Package

Gooseneck/5TH Wheel Package

Used 2020 GMC Sierra 3500 AT4 w/ AT4 Premium Package

Used 2020 GMC Sierra 3500 AT4 w/ AT4 Premium Package Boulder CO 80301

Compact Extended Cab

Canyon

Driver Alert Package

Used 2015 GMC Canyon SLE w/ SLE Convenience Package

Used 2015 GMC Canyon SLE w/ SLE Convenience Package Frederick CO 80504

Used 2023 GMC Sierra 1500 Denali w/ Denali Reserve Package

Used 2023 GMC Sierra 1500 Denali w/ Denali Reserve Package Denver CO 80234

Compact Crew Cab

Elevation Premium Package

Convenience Package

Used 2024 GMC Canyon Elevation w/ Elevation Premium Package

Used 2024 GMC Canyon Elevation w/ Elevation Premium Package Denver CO 80234

Max Trailering Package

Certified 2024 GMC Yukon AT4 w/ Technology Package

Certified 2024 GMC Yukon AT4 w/ Technology Package Brighton CO 80601

Snow Plow Prep/Camper Package

Used 2021 GMC Sierra 2500 SLT w/ Gooseneck/5TH Wheel Package

Used 2021 GMC Sierra 2500 SLT w/ Gooseneck/5TH Wheel Package Denver CO 80221

Used 2021 GMC Sierra 2500 Denali w/ Denali Ultimate Package Denver CO 80234

Used 2021 GMC Sierra 3500 Denali w/ Denali Ultimate Package

Used 2021 GMC Sierra 3500 Denali w/ Denali Ultimate Package Wheat Ridge CO 80033

Used 2022 GMC Sierra 1500 AT4X

Used 2022 GMC Sierra 1500 AT4X Parker CO 80134

LPO, Performance Skid Plate Package

Used 2021 GMC Canyon AT4 w/ Driver Alert Package

Used 2021 GMC Canyon AT4 w/ Driver Alert Package Boulder CO 80301

AT4 Premium Plus Package

LPO, Cargo Convenience Package

Heavy Duty Front Spring/Camper Package

Used 2023 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package

Used 2023 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package Denver CO 80234

Used 2021 GMC Sierra 2500 Denali w/ Denali Ultimate Package Wheat Ridge CO 80033

Used 2022 GMC Yukon SLT

Used 2022 GMC Yukon SLT Denver CO 80234

Edition 1

Used 2023 GMC Canyon AT4X w/ Edition 1

Used 2023 GMC Canyon AT4X w/ Edition 1 Broomfield CO 80020

Used 2024 GMC Terrain SLT Thornton CO 80233

Infotainment Package II

Tech Package

Used 2023 GMC Terrain AT4 w/ Infotainment Package II

Used 2023 GMC Terrain AT4 w/ Infotainment Package II Longmont CO 80504

Used 2022 GMC Canyon Denali

Used 2022 GMC Canyon Denali Loveland CO 80538

Used 2023 GMC Yukon XL Denali Ultimate

Used 2023 GMC Yukon XL Denali Ultimate Parker CO 80134

Denali Ultimate

New 2026 GMC Canyon AT4

New 2026 GMC Canyon AT4 Denver CO 80234

Sierra Convenience Package

Used 2018 GMC Sierra 1500 4x4 Crew Cab w/ Sierra Convenience Package

Used 2018 GMC Sierra 1500 4x4 Crew Cab w/ Sierra Convenience Package Thornton CO 80233

4x4 Crew Cab

Used 2021 GMC Sierra 2500 Denali w/ Denali Ultimate Package Golden CO 80401

Used 2021 GMC Sierra 2500 Denali w/ Denali Ultimate Package Thornton CO 80233

AT4 Preferred Package

Used 2023 GMC Sierra 1500 AT4 w/ Technology Package

Used 2023 GMC Sierra 1500 AT4 w/ Technology Package Denver CO 80234

Alpine Buick GMC

Arapahoe KIA

Greenwood Automotive

JOHNSON AUTO PLAZA

Castle Rock Chevrolet GMC

Loveland Buick GMC

Denver

Used Cars for Sale

Shop, watch video walkarounds and compare prices on Used GMC Cars listings in Boulder, CO. See Kelley Blue Book pricing to get the best deal. Search from 936 Used GMC cars for sale, including a  2015 GMC Canyon SLE, a  2017 GMC Yukon Denali, and a  2018 GMC Sierra 1500 4x4 Crew Cab ranging in price from $3,300 to $93,999.

Used GMC Cars for Sale in Boulder, CO - Kelley Blue Book

Search from 936 GMC for sale, including a Used 2015 GMC Canyon SLE w/ SLE Convenience Package, a Used 2018 GMC Sierra 1500 4x4 Crew Cab w/ Sierra Convenience Package, and a Used 2018 GMC Sierra 1500 4x4 Double Cab ranging in price from $3,300 to $93,999.

Autotrader has 936 GMC for sale near Boulder, CO, including a Used 2015 GMC Canyon SLE w/ SLE Convenience Package, a Used 2018 GMC Sierra 1500 4x4 Crew Cab w/ Sierra Convenience Package, and a Used 2018 GMC Sierra 1500 4x4 Double Cab ranging in price from $3,300 to $93,999.

Frankie Rogers is a senior editor for Kelley Blue Book and focuses on the production of content. She edits and formats content, creates monthly deals lists, is a media asset curator, and photographs cars for various articles and inclusion in KBB’s image library. Her 16+ years at Kelley Blue Book have included roles as a Blue Book copy editor, press vehicle wrangler, and VIN analyst. In her spare time, she can be found tinkering with her 1970 Chevrolet Camaro, trying out new recipes in her cast iron pans, and spoiling her two cats, Grayson and Thaddeus.

Frankie Rogers

Matt Degen, Author at Kelley Blue Book

Matt Degen is an author specializing in reviewing cars with the goal of helping you find the best one for your needs. Prior to joining Kelley Blue Book in 2012, he was a writer and editor for over a decade at The Orange County Register newspaper. There he covered automobiles, music and food -- all things Matt is passionate about. He holds degrees in Communications and Culinary Arts. When not evaluating vehicles, he is cooking on his YouTube channel.

Matt Degen

Midsize SUV Crossover

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Used GMC Cars for Sale in Boulder, CO

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Used 2018 GMC Sierra 1500 4x4 Double Cab

936 Matches

2024 GMC Acadia

2022 GMC Sierra 2500

2021 GMC Sierra 1500