GMC Sierra 2500 Trucks for Sale near Longmont, Colorado
Sort
Filters
4,393 results
Location
Body Type
Popular Body Types
Other Body Types
Price
Mileage
Make, Model, and Trim
Make
Popular Makes
Model
Year
Chassis Options
Cab Style
Chassis Type
Drivetrain
Rear Wheels
Engine Manufacturer
Engine Cylinders
Transmission
GVWR
Cab to Axle
Body Options
Add-Ons
State
New 2026 GMC Sierra 2500 AT4X Crew Cab
$98,779 MSRP
$93,779
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
New 2026 GMC Sierra 2500 SLT Crew Cab
$80,505 MSRP
$77,005
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
New 2026 GMC Sierra 2500 AT4X Crew Cab
$99,374 MSRP
$93,374
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
New 2026 GMC Sierra 2500 AT4X Crew Cab
$99,374 MSRP
$93,374
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
New 2026 GMC Sierra 2500 AT4 Crew Cab
$92,199 MSRP
$85,199
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
New 2026 GMC Sierra 2500 AT4 Crew Cab
$90,204 MSRP
$83,204
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
Used 2024 GMC Sierra 2500 AT4X Crew Cab
$80,250 List Price
$79,696
speed 28,739 mi
sell
Key features
- Diesel
- Turbocharged Diesel V8 6.6L/
- 4WD
location_on
Ken Garff St. George Ford
St. George, UT (502.6 mi)
(435) 523-5684
Used 2026 GMC Sierra 2500 AT4 Crew Cab
$70,530
speed 3,724 mi
sell
Key features
- Gasoline
- 6.6L V8 Gas engine
- 4WD
location_on
Cable Dahmer Chevrolet of Topeka
Topeka, KS (502.8 mi)
(785) 246-7481
Used 2021 GMC Sierra 2500 Denali Crew Cab
$51,045
speed 99,772 mi
sell
Key features
- Diesel
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- 4WD
location_on
Cable Dahmer GMC of Topeka
Topeka, KS (502.8 mi)
(785) 384-5927
Used 2023 GMC Sierra 2500 Pro Regular Cab
$46,210
speed 31,915 mi
sell
Key features
- Gasoline
- 6.6L V8 Gas engine
- 4WD
location_on
Cable Dahmer GMC of Topeka
Topeka, KS (502.8 mi)
(785) 384-5927
Used 2022 GMC Sierra 2500 AT4 Crew Cab
$49,697
speed 104,125 mi
sell
Key features
- Diesel
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- 4WD
location_on
Cable Dahmer GMC of Topeka
Topeka, KS (502.8 mi)
(785) 384-5927
Used 2021 GMC Sierra 2500 Denali Crew Cab
$51,045
speed 99,772 mi
sell
Key features
- Diesel
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- 4WD
location_on
Cable Dahmer Chevrolet of Topeka
Topeka, KS (502.8 mi)
(785) 246-7481
Used 2026 GMC Sierra 2500 AT4 Crew Cab
$70,530
speed 3,724 mi
sell
Key features
- Gasoline
- 6.6L V8 Gas engine
- 4WD
location_on
Cable Dahmer GMC of Topeka
Topeka, KS (502.8 mi)
(785) 384-5927
Used 2022 GMC Sierra 2500 AT4 Crew Cab
$49,697
speed 104,125 mi
sell
Key features
- Diesel
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- 4WD
location_on
Cable Dahmer Chevrolet of Topeka
Topeka, KS (502.8 mi)
(785) 246-7481
Used 2023 GMC Sierra 2500 Pro Regular Cab
$46,210
speed 31,915 mi
sell
Key features
- Gasoline
- 6.6L V8 Gas engine
- 4WD
location_on
Cable Dahmer Chevrolet of Topeka
Topeka, KS (502.8 mi)
(785) 246-7481
Used 2002 GMC Sierra 2500 Extended Cab Service Truck
$5,000
speed 205,303 mi
sell
Key features
- Gasoline
- RWD
- GAS, 8 CYL, 6.0L, MFI, IRON, GM
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
Used 2024 GMC Sierra 2500 AT4 Crew Cab
$57,495
speed 87,367 mi
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
Used 2022 GMC Sierra 2500 AT4 Crew Cab
$55,995
speed 55,627 mi
sell
Key features
- Diesel
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
Used 2022 GMC Sierra 2500 Denali Crew Cab
$51,995
speed 84,738 mi
sell
Key features
- Diesel
- Engine: 6.6L V8 DuraMax Diesel, Turbo
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
Used 2024 GMC Sierra 2500 AT4 Crew Cab
contact for price
speed 62,924 mi
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Newby Buick GMC
Saint George, UT (503.3 mi)
(435) 412-2916
Used 2024 GMC Sierra 2500 AT4 Crew Cab
$72,699
speed 33,458 mi
sell
Key features
- Diesel
- 4WD
- AT4
location_on
Noller Ford Topeka
Topeka, KS (506.9 mi)
(785) 347-8336
Used 2020 GMC Sierra 2500 Denali Crew Cab
$52,995
speed 123,974 mi
sell
Key features
- Diesel
- 4WD
- Denali
location_on
Joe Cooper Ford of Yukon
Yukon, OK (512.5 mi)
(572) 212-7324
Used 2024 GMC Sierra 2500 Denali Ultimate Crew Cab
$78,540
speed 49,146 mi
sell
Key features
- Diesel
- 4WD
- Denali Ultimate
location_on
Joe Cooper Ford of Yukon
Yukon, OK (512.5 mi)
(572) 212-7324
Used 2017 GMC Sierra 2500 Denali Crew Cab
contact for price
speed 127,594 mi
sell
Key features
- Diesel
- 4WD
- SRW
location_on
Mercedes-Benz of Oklahoma City
Edmond, OK (520.4 mi)
(405) 489-8082
Used 2024 GMC Sierra 2500 Denali Ultimate Crew Cab
contact for price
speed 52,500 mi
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Permian Chevrolet
Hobbs, NM (523.2 mi)
(505) 391-4392
Used 2025 GMC Sierra 2500 Denali Ultimate Crew Cab
contact for price
speed 6,560 mi
sell
Key features
- Diesel
- 6.6L Duramax Turbo-Diesel V8 engine
- 4WD
location_on
Permian Chevrolet
Hobbs, NM (523.2 mi)
(505) 391-4392
Used 2026 GMC Sierra 2500 Denali Crew Cab
$77,991
speed 6,742 mi
sell
Key features
- Diesel
- 4WD
- Denali
location_on
Bob Moore Ford
Oklahoma City, OK (530.8 mi)
(405) 497-7406
Used 2020 GMC Sierra 2500 SLT Crew Cab
$46,275 List Price
$40,595
speed 66,070 mi
sell
Key features
- Gasoline
- 4WD
- SLT
location_on
Red Rock Auto of Watford City
Watford City, ND (535.5 mi)
(701) 892-2138
Used 2024 GMC Sierra 2500 SLE Crew Cab
$48,000 List Price
$46,795
speed 72,661 mi
sell
Key features
- Gasoline
- 4WD
- SLE
location_on
Red Rock Auto of Watford City
Watford City, ND (535.5 mi)
(701) 892-2138
Used 2020 GMC Sierra 2500 SLT Crew Cab
$50,275 List Price
$47,995
speed 77,248 mi
sell
Key features
- Diesel
- 4WD
- SLT
location_on
Red Rock Auto of Watford City
Watford City, ND (535.5 mi)
(701) 892-2138
