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5 used GMC trucks for sale in Longmont, CO

White 2021 GMC Sierra 2500HD 4WD Crew Cab Long Bed SLE for sale in Longmont, COPhotos of 2021 GMC Sierra 2500HD 4WD Crew Cab Long Bed SLE for sale in Longmont, CO at Red's Auto & TruckAnother view of 2021 GMC Sierra 2500HD 4WD Crew Cab Long Bed SLE for sale in Longmont, CO at Red's Auto & TruckMore photos of 2021 GMC Sierra 2500HD 4WD Crew Cab Long Bed SLE at Red's Auto & Truck, COMore photos of 2021 GMC Sierra 2500HD 4WD Crew Cab Long Bed SLE at Red's Auto & Truck, CO
Stock # 2025-526

2021 GMC Sierra 2500HD

4WD Crew Cab Long Bed SLE
97,493 miles
was $34,999
$33,863
Est. Payment
$500/mo
White 2023 GMC Sierra 3500HD 4WD Crew Cab Long Bed Pro for sale in Longmont, COPhotos of 2023 GMC Sierra 3500HD 4WD Crew Cab Long Bed Pro for sale in Longmont, CO at Red's Auto & TruckAnother view of 2023 GMC Sierra 3500HD 4WD Crew Cab Long Bed Pro for sale in Longmont, CO at Red's Auto & TruckMore photos of 2023 GMC Sierra 3500HD 4WD Crew Cab Long Bed Pro at Red's Auto & Truck, COMore photos of 2023 GMC Sierra 3500HD 4WD Crew Cab Long Bed Pro at Red's Auto & Truck, CO
Stock # 2025-607

2023 GMC Sierra 3500HD

4WD Crew Cab Long Bed Pro
73,045 miles
was $46,999
$46,763
Est. Payment
$690/mo
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Black 2019 GMC Sierra 3500HD Denali for sale in Longmont, COPhotos of 2019 GMC Sierra 3500HD Denali for sale in Longmont, CO at Red's Auto & TruckAnother view of 2019 GMC Sierra 3500HD Denali for sale in Longmont, CO at Red's Auto & TruckMore photos of 2019 GMC Sierra 3500HD Denali at Red's Auto & Truck, COMore photos of 2019 GMC Sierra 3500HD Denali at Red's Auto & Truck, CO
Stock # 2026-364

2019 GMC Sierra 3500HD

Denali
149,625 miles
$44,999
Est. Payment
$664/mo
White 2022 GMC Sierra 2500HD 4WD Crew Cab Long Bed Pro for sale in Longmont, COPhotos of 2022 GMC Sierra 2500HD 4WD Crew Cab Long Bed Pro for sale in Longmont, CO at Red's Auto & TruckAnother view of 2022 GMC Sierra 2500HD 4WD Crew Cab Long Bed Pro for sale in Longmont, CO at Red's Auto & TruckMore photos of 2022 GMC Sierra 2500HD 4WD Crew Cab Long Bed Pro at Red's Auto & Truck, COMore photos of 2022 GMC Sierra 2500HD 4WD Crew Cab Long Bed Pro at Red's Auto & Truck, CO
Stock # 2026-115

2022 GMC Sierra 2500HD

4WD Crew Cab Long Bed Pro
139,864 miles
was $37,799
$36,963
Est. Payment
$546/mo
Blue 2022 GMC Sierra 1500 2WD Crew Cab Short Box Elevation for sale in Longmont, COPhotos of 2022 GMC Sierra 1500 2WD Crew Cab Short Box Elevation for sale in Longmont, CO at Red's Auto & TruckAnother view of 2022 GMC Sierra 1500 2WD Crew Cab Short Box Elevation for sale in Longmont, CO at Red's Auto & TruckMore photos of 2022 GMC Sierra 1500 2WD Crew Cab Short Box Elevation at Red's Auto & Truck, COMore photos of 2022 GMC Sierra 1500 2WD Crew Cab Short Box Elevation at Red's Auto & Truck, CO
Stock # 2026-305

2022 GMC Sierra 1500

2WD Crew Cab Short Box Elevation
30,996 miles
was $37,963
$37,763
Est. Payment
$557/mo
Showing 5 of 5 results

Disclaimer:

Prices do not include government fees and taxes, any finance charges, any electronic filing charge and any emission testing charge. We update our website inventory frequently, but our inventory changes with recent sales. Mileage may change slightly due to test drives. We are not responsible for any errors or omissions on this page. Please feel free to call us before you visit.