Diesel Trucks for Sale in Frederick, CO

2,492 results

Sort by:

2007 Dodge RAM 3500

SLT Quad Cab 4WD

77,981 miles

$29,999

Year:: 2007
Make:: Dodge
Model:: RAM 3500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 350 hp 6.7L I6 Diesel
Exterior color:: Gold
Fuel type:: Diesel
Interior color:: Gray
Transmission:: 6-Speed Automatic
Mileage:: 77,981
Stock #:: 7G784405
VIN:: 3D7MX38AX7G784405

Sponsored by AutoNation Dodge RAM Arapahoe

2026 GMC Sierra 1500

SLE Crew Cab 4WD

518 miles

$53,344

Year:: 2026
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 3L I6 Diesel
Exterior color:: Onyx Black
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 518
Stock #:: 8230GA
VIN:: 3GTUUBE81TG109289

2025 Chevrolet Silverado 2500HD

LT Crew Cab 4WD

13,169 miles

$64,991

Year:: 2025
Make:: Chevrolet
Model:: Silverado 2500HD
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 470 hp 6.6L V8 Biodiesel
Exterior color:: Black
Fuel type:: Biodiesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 13,169
Stock #:: P9958A
VIN:: 1GC4KNEY0SF208404

2018 RAM 3500

Tradesman Crew Cab LB 4WD

151,942 miles

$24,795

Year:: 2018
Make:: RAM
Model:: 3500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 350 hp 6.7L I6 Diesel
Exterior color:: Bright Silver Metallic Clearcoat
Fuel type:: Diesel
Interior color:: Black
Transmission:: 6-Speed Automatic
Mileage:: 151,942
Stock #:: 11064VB
VIN:: 3C63R3GL4JG412933

2025 RAM 2500

Big Horn Crew Cab 4WD

31,766 miles

$50,000

Great Deal

$937/mo est.

Manufacturer certified

Greeley, CO

23 mi away

Year:: 2025
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 6.7L I6 Diesel
Exterior color:: Bright White Clearcoat
Fuel type:: Diesel
Interior color:: Black
Transmission:: 8-Speed Automatic
Mileage:: 31,766
Stock #:: SG530873U
VIN:: 3C63R5DL8SG530873

2022 Chevrolet Silverado 3500HD Chassis

LT Crew Cab 4WD

84,464 miles

$43,990

Year:: 2022
Make:: Chevrolet
Model:: Silverado 3500HD Chassis
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 6.6L V8 Biodiesel
Exterior color:: Summit White
Fuel type:: Biodiesel
Interior color:: Jet Black
Transmission:: Automatic
Mileage:: 84,464
Stock #:: RS314404
VIN:: 1GB4YTEYXNF314404

2021 GMC Sierra 1500

AT4 Crew Cab 4WD

83,619 miles

$36,898

Year:: 2021
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 277 hp 3L I6 Diesel
Exterior color:: Gray (Satin Steel Metallic)
Combined gas mileage:: 24 MPG
Fuel type:: Diesel
Interior color:: Jet Black With Kalahari Accents
Transmission:: Automatic
Mileage:: 83,619
Stock #:: P136079
VIN:: 3GTU9EET3MG136079

2023 RAM 2500

Big Horn Crew Cab 4WD

80,108 miles

$41,415

Year:: 2023
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 370 hp 6.7L I6 Diesel
Exterior color:: Delmonico Red Pearlcoat
Fuel type:: Diesel
Interior color:: Black
Transmission:: 6-Speed Automatic
Mileage:: 80,108
Stock #:: PG512150
VIN:: 3C6UR5DL5PG512150

2014 RAM 2500

Tradesman Crew Cab 4WD

61,776 miles

$29,900

Year:: 2014
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 350 hp 6.7L I6 Diesel
Exterior color:: Black Clearcoat
Fuel type:: Diesel
Interior color:: Black
Transmission:: 6-Speed Automatic
Mileage:: 61,776
Stock #:: U1028
VIN:: 3C6UR5CL9EG156557

2023 RAM 2500

Limited Crew Cab 4WD

38,866 miles

$58,990

Year:: 2023
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 370 hp 6.7L I6 Diesel
Exterior color:: Gray (Granite Crystal Metallic Clearcoat)
Fuel type:: Diesel
Interior color:: Black
Transmission:: 6-Speed Automatic
Mileage:: 38,866
Stock #:: SWG31177A
VIN:: 3C6UR5SL4PG597730

Preparing for a close up...

Photos coming soon

2019 Ford F-250 Super Duty

XLT Crew Cab LB 4WD

142,784 miles

$29,995

Year:: 2019
Make:: Ford
Model:: F-250 Super Duty
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 450 hp 6.7L V8 Biodiesel
Exterior color:: White
Fuel type:: Biodiesel
Interior color:: Gray
Transmission:: 6-Speed Automatic
Mileage:: 142,784
Stock #:: E66895
VIN:: 1FD7W2BT5KEE66895

Preparing for a close up...

Photos coming soon

2025 Chevrolet Silverado 3500HD

LT Crew Cab 4WD

28,564 miles

$59,862

Year:: 2025
Make:: Chevrolet
Model:: Silverado 3500HD
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 470 hp 6.6L V8 Biodiesel
Exterior color:: Sterling Gray Metallic
Fuel type:: Biodiesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 28,564
Stock #:: 6651AW-1
VIN:: 1GC4KTEY8SF297188

Preparing for a close up...

Photos coming soon

2017 RAM 2500

Big Horn Crew Cab LB 4WD

135,708 miles

$29,998

Year:: 2017
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 350 hp 6.7L I6 Diesel
Exterior color:: Bright Silver Metallic Clearcoat
Fuel type:: Diesel
Interior color:: Diesel Gray/Black
Transmission:: 6-Speed Automatic
Mileage:: 135,708
Stock #:: 10800VB
VIN:: 3C6UR5JL1HG695360

Preparing for a close up...

Photos coming soon

2013 RAM 2500

Big Horn Crew Cab 4WD

113,358 miles

$29,244

Year:: 2013
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 350 hp 6.7L I6 Diesel
Exterior color:: True Blue Pearlcoat
Fuel type:: Diesel
Interior color:: Diesel Gray/Black
Transmission:: 6-Speed Automatic
Mileage:: 113,358
Stock #:: P9213B
VIN:: 3C6UR5DLXDG571660

Preparing for a close up...

Photos coming soon

2024 RAM 2500

Tradesman Crew Cab LB 4WD

55,106 miles

$42,995

Year:: 2024
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 370 hp 6.7L I6 Diesel
Exterior color:: White
Fuel type:: Diesel
Interior color:: Gray
Transmission:: 8-Speed Automatic
Mileage:: 55,106
Stock #:: 156218
VIN:: 3C6UR5HL0RG156218

Preparing for a close up...

Photos coming soon

2020 GMC Sierra 3500HD

Denali Crew Cab 4WD

52,973 miles

$53,999

Great Deal

$1,056/mo est.

Third-party certified

Denver, CO

34 mi away

Year:: 2020
Make:: GMC
Model:: Sierra 3500HD
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 6.6L V8 Biodiesel
Exterior color:: Pacific Blue Metallic
Fuel type:: Biodiesel
Interior color:: Gray (Dark Walnut/Dark Ash Grey)
Transmission:: Automatic
Mileage:: 52,973
Stock #:: C56937A
VIN:: 1GT49WEY3LF336705

Preparing for a close up...

Photos coming soon

2020 RAM 2500

Laramie Crew Cab 4WD

52,490 miles

$50,990

Year:: 2020
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 370 hp 6.7L I6 Diesel
Exterior color:: White
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 52,490
Stock #:: 2686099A
VIN:: 3C6UR5FL7LG288340

Preparing for a close up...

Photos coming soon

2023 RAM 2500

Big Horn Crew Cab 4WD

73,203 miles

$38,790

Year:: 2023
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 370 hp 6.7L I6 Diesel
Exterior color:: Bright White Clearcoat
Fuel type:: Diesel
Interior color:: Diesel Gray/Black
Transmission:: Automatic
Mileage:: 73,203
Stock #:: RS514515
VIN:: 3C6UR5DL7PG514515

Preparing for a close up...

Photos coming soon

2024 RAM 3500

Tradesman Crew Cab LB DRW 4WD

85,349 miles

$46,077

Year:: 2024
Make:: RAM
Model:: 3500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 370 hp 6.7L I6 Diesel
Exterior color:: Bright White Clearcoat
Fuel type:: Diesel
Interior color:: Black
Transmission:: 6-Speed Automatic
Mileage:: 85,349
Stock #:: 6737AW-1
VIN:: 3C63RRGL7RG394068

Preparing for a close up...

Photos coming soon

2021 RAM 2500

Laramie Crew Cab 4WD

90,053 miles

$46,999

Year:: 2021
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 370 hp 6.7L I6 Diesel
Exterior color:: Silver
Fuel type:: Diesel
Interior color:: Black
Transmission:: Automatic
Mileage:: 90,053
Stock #:: 34495
VIN:: 3C6UR5FL6MG525546

Preparing for a close up...

Photos coming soon

2021 RAM 2500

Laramie Crew Cab 4WD

47,097 miles

$51,499

Year:: 2021
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 370 hp 6.7L I6 Diesel
Exterior color:: Gray (Maximum Steel Metallic Clearcoat)
Fuel type:: Diesel
Interior color:: Black
Transmission:: 6-Speed Automatic
Mileage:: 47,097
Stock #:: MG512378
VIN:: 3C6UR5FL1MG512378

Preparing for a close up...

Photos coming soon

2021 RAM 2500

Laramie Crew Cab 4WD

23,780 miles

$54,999

Fair Deal

$1,067/mo est.

Third-party certified

Denver, CO

34 mi away

Year:: 2021
Make:: RAM
Model:: 2500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 370 hp 6.7L I6 Diesel
Exterior color:: Diamond Black Crystal Pearlcoat
Fuel type:: Diesel
Interior color:: Black
Transmission:: 6-Speed Automatic
Mileage:: 23,780
Stock #:: B72802A
VIN:: 3C6UR5FL2MG639222

Preparing for a close up...

Photos coming soon

2018 Ford F-150

Lariat SuperCrew 4WD

65,671 miles

$30,497

Year:: 2018
Make:: Ford
Model:: F-150
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 250 hp 3L V6 Biodiesel
Exterior color:: Oxford White
Combined gas mileage:: 22 MPG
Fuel type:: Biodiesel
Interior color:: Medium Light Camel
Transmission:: Automatic
Mileage:: 65,671
Stock #:: JFD51973
VIN:: 1FTFW1E19JFD51973

Preparing for a close up...

Photos coming soon

2022 Chevrolet Silverado 2500HD

High Country Crew Cab 4WD

72,876 miles

$54,698

Year:: 2022
Make:: Chevrolet
Model:: Silverado 2500HD
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 6.6L V8 Biodiesel
Exterior color:: Summit White
Fuel type:: Biodiesel
Interior color:: Jet Black/Umber
Transmission:: Automatic
Mileage:: 72,876
Stock #:: L218939
VIN:: 2GC4YREYXN1218939

A better way to discover your best deal

Let us help you find a car you’ll love.

Diesel Trucks for Sale in Frederick, CO

2007 Dodge RAM 3500

$29,999

2026 GMC Sierra 1500

$53,344

2025 Chevrolet Silverado 2500HD

$64,991

2018 RAM 3500

$24,795

2025 RAM 2500

$50,000

2022 Chevrolet Silverado 3500HD Chassis

$43,990

2021 GMC Sierra 1500

$36,898

2023 RAM 2500

$41,415

2014 RAM 2500

$29,900

2023 RAM 2500

$58,990

2019 Ford F-250 Super Duty

$29,995

2025 Chevrolet Silverado 3500HD

$59,862

2017 RAM 2500

$29,998

2013 RAM 2500

$29,244

2024 RAM 2500

$42,995

2020 GMC Sierra 3500HD

$53,999

2020 RAM 2500

$50,990

2023 RAM 2500

$38,790

2024 RAM 3500

$46,077

2021 RAM 2500

$46,999

2021 RAM 2500

$51,499

2021 RAM 2500

$54,999

2018 Ford F-150

$30,497

2022 Chevrolet Silverado 2500HD

$54,698

Broader Searches

Shop By City

Popular Searches

Used car dealers near Frederick

A better way to discover your best deal