Used Diesel Gmc in Longmont, CO For Sale (23 results)
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2024 gmc sierra 1500 denali ultimate
This stunning 2024 GMC Sierra 1500 Denali Ultimate offers remarkable luxury with features like a Bose 12-Speaker System and a High-Def Surround Vision camera. Perfect for family adventures with its spacious interior and advanced trailer guidance systems
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Crew cab
Longmont, CO
3,791 mi.
Metallic
Crew cab
automatic
diesel
Longmont, CO
$74,717
2022 gmc sierra 2500 at4
This 2022 GMC Sierra 2500HD AT4 in Summit White features a powerful Duramax 6.6L V8 Turbodiesel engine and 10-speed automatic transmission, ensuring a robust performance on and off the road
Longmont, CO
82,427 mi.
White
automatic
diesel
Longmont, CO
2023 gmc sierra 1500 at4
This 2023 GMC Sierra 1500 AT4 boasts a powerful diesel engine, four-wheel drive capability, and a striking Volcanic Red Tintcoat exterior. It's well-maintained with a clean CARFAX and ready for your next adventure!
Longmont, CO
32,532 mi.
Volcanic red tintcoat
automatic
diesel
Longmont, CO
$59,775
2023 gmc sierra 1500 elevation
This 2023 GMC Sierra 1500 Elevation features a powerful diesel engine and an advanced 10-Speed Automatic transmission, ensuring a smooth ride. With only 28,260 miles, this one-owner truck is equipped for adventure with an off-road suspension and a navigation system
Longmont, CO
28,260 mi.
Silver
automatic
diesel
Longmont, CO
$47,666
2024 GMC Sierra 1500
Introducing the 2024 GMC Sierra 1500, a rugged pickup that's crafted for both work and play. With 4WD and an automatic transmission, it's ready for any terrain
Longmont, CO
automatic
diesel
Longmont, CO
$74,717
2022 gmc sierra 1500 at4
This stunning 2022 GMC Sierra 1500 AT4 in Dynamic Blue Metallic offers a clean CARFAX and comes with a powerful diesel engine and advanced automatic transmission. It's a rugged truck equipped for all terrains!
Longmont, CO
26,000 mi.
Dynamic blue metallic
automatic
diesel
Longmont, CO
$54,775
2024 gmc sierra 3500 denali
This 2024 GMC Sierra 3500 Denali in Onyx Black packs a robust diesel engine and features a luxurious interior with Alpine Umber accents, perfect for both a rugged and refined driving experience
Longmont, CO
24,584 mi.
Black
automatic
diesel
Longmont, CO
$81,775
2022 gmc sierra 1500 elevation
This 2022 GMC Sierra 1500 Elevation comes with a powerful 3.0L I6 engine and a responsive 10-speed automatic transmission. A one-owner vehicle with a sleek Quicksilver Metallic exterior and Jet Black cloth interior shows impressive mileage
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4d crew cab
Longmont, CO
67,643 mi.
Quicksilver metallic
4d crew cab
automatic
diesel
Longmont, CO
$30,888
2024 gmc sierra 2500 denali
Discover the luxurious 2024 GMC Sierra 2500 Denali with only 502 miles, featuring a powerful Duramax Diesel engine, four-wheel drive, and a Reserve Package. This stunning truck combines style and capability for your next adventure
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Truck
Longmont, CO
502 mi.
Onyx black
Truck
automatic
diesel
Longmont, CO
$82,999
2024 gmc sierra 3500 denali
Experience luxury and power with the 2024 GMC Sierra 3500 Denali. This robust pickup features a four-wheel drive system and a comfortable Alpine Umber interior, perfect for work or play
Longmont, CO
23,324 mi.
Black
automatic
diesel
Longmont, CO
$83,275
2024 gmc sierra 3500 denali
Catch this luxurious 2024 GMC Sierra 3500HD Denali Ultimate, featuring a powerful Duramax 6.6L V8 Turbodiesel engine with a 10-speed automatic transmission, perfect for both work and play in the Colorado terrain
Longmont, CO
33,010 mi.
Black
automatic
diesel
Longmont, CO
$79,275
2024 GMC Sierra 2500hd slt
This 2024 GMC Sierra 2500HD SLT is equipped for performance with a 4X4 drive, a luxury Bose audio system, and a variety of convenience features ideal for your next adventure. Enjoy the power and reliability of this pickup with only 21,898 miles!
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Pickup truck
Longmont, CO
21,898 mi.
Pickup truck
diesel
Longmont, CO
$70,298
2021 gmc sierra 1500 elevation
Discover the 2021 GMC Sierra 1500 Elevation, a hard-to-find turbo diesel truck featuring four-wheel drive and striking 20-inch gloss black wheels. This mechanically inspected vehicle promises quality and performance
Longmont, CO
48,257 mi.
Satin steel metallic
automatic
diesel
Longmont, CO
$39,389
2018 gmc sierra 3500 denali
The 2018 GMC Sierra 3500HD Denali is a luxurious yet powerful pickup equipped with a 6.6L Duramax turbo-diesel engine, offering 445 hp and 910 lb-ft torque, perfect for towing. Enjoy leather seating, an 8-inch touchscreen, and a premium Bose sound system
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Pickup truck
Longmont, CO
241,151 mi.
Gray
Pickup truck
automatic
diesel
Longmont, CO
$29,999
2020 gmc sierra 2500 slt
Experience the power of the 2020 GMC Sierra 2500 SLT 4X4 Duramax Diesel! With new tires, leather heated seats, and a Surround View Camera, this truck is in top condition and ready for the road
Longmont, CO
130,479 mi.
Black
automatic
diesel
Longmont, CO
$46,999
2019 gmc sierra 2500 denali
Discover this clean 2019 GMC Sierra 2500 Denali in Quicksilver Metallic, featuring a powerful Duramax 6.6L V8 Turbodiesel engine and a smooth automatic transmission. Ready for any terrain with its four-wheel drive!
Longmont, CO
80,325 mi.
Quicksilver metallic
automatic
diesel
Longmont, CO
$50,275
2021 gmc sierra 1500 at4
This 2021 GMC Sierra 1500 AT4 features powerful diesel fuel, an automatic transmission, and four-wheel drive, coupled with a stylish Jet Black interior accented with Kalahari colors. It has low mileage and is ready for any adventure
Longmont, CO
25,801 mi.
Notdoor
automatic
diesel
Longmont, CO
$48,275
2016 gmc canyon sle
This 2016 GMC Canyon SLE comes with a powerful Duramax Diesel engine and a rugged all-terrain package, perfect for adventure seekers. With 135,908 miles and four-wheel drive, it's ready for any challenge
Longmont, CO
135,908 mi.
Black
automatic
diesel
Longmont, CO
$19,998
2018 GMC Sierra 2500hd
This 2018 GMC Sierra 2500HD is equipped with 4WD for enhanced traction and stability, featuring an automatic transmission for a smooth driving experience
Longmont, CO
automatic
diesel
Longmont, CO
$34,999
2018 gmc sierra 2500 slt
The 2018 GMC Sierra 2500 SLT is a powerful truck equipped with a 6.6-liter Duramax turbo-diesel engine delivering 445 hp and 910 lb-ft torque, ideal for serious towing and hauling tasks with a blend of luxury and comfort features
Longmont, CO
186,354 mi.
Black
automatic
diesel
Longmont, CO
$34,999
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