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Spider

Fullsize Extended Cab

Truck

AWD4WD

8-Cylinder Turbo

Diesel

Used

Sierra 2500

Get AutoCheck Vehicle History

Used 1994 GMC Sierra 2500 4x4 Extended Cab

Used 1994 GMC Sierra 2500 4x4 Extended Cab Lakewood CO 80227

Automatic

4x4 Extended Cab

Fullsize Crew Cab

Sierra 3500

Used 2011 GMC Sierra 3500 Denali

Used 2011 GMC Sierra 3500 Denali Longmont CO 80504

Denali

AT4 Premium Plus Package

Gooseneck/5th Wheel Prep Package

Used 2024 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package

Used 2024 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package Denver CO 80234

Denali Reserve Package

LPO, Cargo Convenience Package

Gooseneck/5TH Wheel Prep Package

LPO, Hitch Package

Used 2024 GMC Sierra 3500 Denali w/ Denali Reserve Package

Used 2024 GMC Sierra 3500 Denali w/ Denali Reserve Package Centennial CO 80112

4-Cylinder Turbo

Gasoline

Sierra 1500

Pro Value Package

Used 2024 GMC Sierra 1500 Pro w/ Pro Value Package

Used 2024 GMC Sierra 1500 Pro w/ Pro Value Package Littleton CO 80129

SLE Preferred Package

Convenience Package

Suspension Package, Off-Road

Used 2013 GMC Sierra 3500 SLE w/ SLE Preferred Package

Used 2013 GMC Sierra 3500 SLE w/ SLE Preferred Package Denver CO 80210

8-Cylinder

Used 2024 GMC Sierra 1500 Denali

Used 2024 GMC Sierra 1500 Denali Littleton CO 80129

Compact Extended Cab

6-Cylinder

Canyon

Used 2021 GMC Canyon Elevation Standard

Used 2021 GMC Canyon Elevation Standard Centennial CO 80112

Elevation Standard

6-Cylinder Turbo

Used 2021 GMC Sierra 1500 AT4

Used 2021 GMC Sierra 1500 AT4 Littleton CO 80129

SLE Convenience Package

Used 2022 GMC Sierra 2500 SLE w/ SLE Convenience Package

Used 2022 GMC Sierra 2500 SLE w/ SLE Convenience Package Denver CO 80234

Certified

Certified 2025 GMC Sierra 3500 Denali w/ Denali Reserve Package

Certified 2025 GMC Sierra 3500 Denali w/ Denali Reserve Package Wheat Ridge CO 80033

SLE Value Package;

Used 2024 GMC Sierra 2500 SLE w/ SLE Value Package;

Used 2024 GMC Sierra 2500 SLE w/ SLE Value Package; Boulder CO 80301

Technology Package

Heavy Duty Front Spring/Camper Package

Used 2021 GMC Sierra 2500 Denali w/ Technology Package

Used 2021 GMC Sierra 2500 Denali w/ Technology Package Denver CO 80221

LPO, Interior Protection Package

Used 2022 GMC Canyon Elevation Standard w/ Convenience Package

Used 2022 GMC Canyon Elevation Standard w/ Convenience Package Aurora CO 80012

AT4 Premium Package

Used 2024 GMC Sierra 1500 AT4 w/ Technology Package

Used 2024 GMC Sierra 1500 AT4 w/ Technology Package Littleton CO 80129

Third-Party Certified

<div class="text-bold text-default margin-top-3 col-xs-12 margin-bottom-5">Confidence at Every Turn.</div><div class="col-xs-12"><ul><li>139-Point Inspection by Factory-Trained Technicians</li><li>90-Day/4,000-Mile (whichever comes first) Comprehensive Warranty¹</li><li>Nationwide Dealer Network for Service and Accessories</li><li>Complimentary 24/7 Roadside Assistance²</li><li>CARFAX® Vehicle History Report³</li><li>11,000 FordPass™ Rewards Points⁴ to Use Toward Your First Maintenance Visit</li></ul><p>Exceptional Coverage Comes Standard.</p></div><div class="margin-top-4 text-size-200 text-subdued col-xs-12"><div class="padding-bottom-4">Disclaimer</div><div class="text-size-100"><sup>1</sup> See your dealer for warranty coverage details.</br><sup>2</sup> See your dealer for coverage details. Roadside Assistance is included for certain owners and available to everyone for a per-service fee. Ford reserves the right to change program details without obligations.</br><sup>3</sup> CARFAX® is a registered trademark of CARFAX® Inc.<br/><sup>4</sup> FordPass App, compatible with select smartphone platforms, is available via a download. Message and data rates may apply.</div></div>

Ford Blue Advantage - Blue Certified

Used 2023 GMC Sierra 3500 Pro w/ Convenience Package

Used 2023 GMC Sierra 3500 Pro w/ Convenience Package Lakewood CO 80215

Gooseneck/5TH Wheel Package

Used 2022 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package

Used 2022 GMC Sierra 2500 AT4 w/ AT4 Premium Plus Package Aurora CO 80012

Used 2022 GMC Sierra 1500 Denali w/ Technology Package

Used 2022 GMC Sierra 1500 Denali w/ Technology Package Littleton CO 80129

Used 2024 GMC Sierra 1500 Denali w/ Denali Reserve Package

Used 2024 GMC Sierra 1500 Denali w/ Denali Reserve Package Littleton CO 80129

Duramax Plus Package

Used 2018 GMC Sierra 3500 Denali w/ Duramax Plus Package

Used 2018 GMC Sierra 3500 Denali w/ Duramax Plus Package Denver CO 80234

X31 Off-Road Package

New 2026 GMC Sierra 1500 Elevation w/ X31 Off-Road Package

New 2026 GMC Sierra 1500 Elevation w/ X31 Off-Road Package Loveland CO 80538

Elevation

Flexible Fuel

Used 2013 GMC Sierra 2500 SLE w/ SLE Preferred Package

Used 2013 GMC Sierra 2500 SLE w/ SLE Preferred Package Broomfield CO 80020

New 2025 GMC Sierra 3500 Denali w/ Denali Reserve Package

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

Denali Black Diamond Edition

Denali Ultimate Package

Used 2022 GMC Sierra 3500 Denali w/ Denali Black Diamond Edition

Used 2022 GMC Sierra 3500 Denali w/ Denali Black Diamond Edition Denver CO 80221

Used 2022 GMC Sierra 2500 Denali w/ Technology Package

Used 2022 GMC Sierra 2500 Denali w/ Technology Package Brighton CO 80601

SLT Crew Cab Premium Plus Package

Used 2018 GMC Sierra 1500 SLT

Used 2018 GMC Sierra 1500 SLT Littleton CO 80129

Used 2023 GMC Sierra 1500 Denali Ultimate

Used 2023 GMC Sierra 1500 Denali Ultimate Littleton CO 80129

Denali Ultimate

AT4X AEV Edition

Used 2023 GMC Sierra 1500 AT4X w/ AT4X AEV Edition

Used 2023 GMC Sierra 1500 AT4X w/ AT4X AEV Edition Littleton CO 80129

AT4X

Fullsize Regular Cab

Fleet Convenience Package

Trailering Package

Used 2021 GMC Sierra 1500 4x4 Regular Cab w/ Fleet Convenience Package

Used 2021 GMC Sierra 1500 4x4 Regular Cab w/ Fleet Convenience Package Henderson CO 80640

4x4 Regular Cab

Used 2024 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package

Used 2024 GMC Sierra 3500 AT4 w/ AT4 Premium Plus Package Littleton CO 80122

Used 2017 GMC Sierra 3500 Denali w/ Duramax Plus Package

Used 2017 GMC Sierra 3500 Denali w/ Duramax Plus Package Golden CO 80401

Max Trailering Package

Used 2024 GMC Sierra 2500 Denali w/ Denali Reserve Package

Used 2024 GMC Sierra 2500 Denali w/ Denali Reserve Package Littleton CO 80129

Compact Crew Cab

Nightfall Edition

Driver Alert Package

Used 2016 GMC Canyon SLE w/ Nightfall Edition

Used 2016 GMC Canyon SLE w/ Nightfall Edition Denver CO 80234

Used 2020 GMC Sierra 3500 Denali w/ Denali Ultimate Package

Used 2020 GMC Sierra 3500 Denali w/ Denali Ultimate Package Boulder CO 80301

Used 2015 GMC Sierra 3500 Denali w/ Duramax Plus Package

Used 2015 GMC Sierra 3500 Denali w/ Duramax Plus Package Littleton CO 80123

SLT Convenience Package

Driver Alert Package II

SLT Preferred Package

Driver Alert Package I

Used 2021 GMC Sierra 1500 SLT w/ SLT Convenience Package

Used 2021 GMC Sierra 1500 SLT w/ SLT Convenience Package Littleton CO 80129

Skid Plate Package, Frame-Mounted Shields

Used 2008 GMC Sierra 3500 SLT w/ Convenience Package

Used 2008 GMC Sierra 3500 SLT w/ Convenience Package Longmont CO 80501

Used 2009 GMC Sierra 3500 SLT w/ SLT Convenience Package

Used 2009 GMC Sierra 3500 SLT w/ SLT Convenience Package Brighton CO 80601

Castle Rock Chevrolet GMC

Loveland Buick GMC

Denver

Used Cars for Sale

Test drive Used GMC Trucks at home from the top dealers in your area. Search from 69 Used GMC Trucks for sale, including a  1994 GMC Sierra 2500 4x4 Extended Cab, a  2008 GMC Sierra 3500 SLT, and a  2009 GMC Sierra 3500 SLT ranging in price from $8,575 to $88,995.

Used GMC Long Bed Trucks for Sale - Autotrader

Search from 69 GMC Trucks for sale, including a Certified 2025 GMC Sierra 3500 Denali w/ Denali Reserve Package, a Used 1994 GMC Sierra 2500 4x4 Extended Cab, and a Used 2008 GMC Sierra 3500 SLT w/ Convenience Package ranging in price from $8,575 to $88,995.

Autotrader has 69 GMC Trucks for sale near Denver, CO, including a Certified 2025 GMC Sierra 3500 Denali w/ Denali Reserve Package, a Used 1994 GMC Sierra 2500 4x4 Extended Cab, and a Used 2008 GMC Sierra 3500 SLT w/ Convenience Package ranging in price from $8,575 to $88,995.

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Used GMC Long Bed Trucks for Sale

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Used 2018 GMC Sierra 1500 SLT

69 Matches

Used 2022 GMC Sierra 3500 Denali

Used 2013 GMC Sierra 2500 SLE

Used 2022 GMC Sierra 2500 Denali