Used GMC Sedans for Sale inLongmont, CO

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3,172 vehicles found

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Year:
2026
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Glacier White Tricoat
Fuel type:
Biodiesel
Interior color:
Alpine Umber
Transmission:
10-Speed Automatic
Mileage:
16,232
Stock #:
KM130582
VIN:
1GT4UYEYXTF130582
Glacier White Tricoat 2026 GMC Sierra 3500HD Pickup Truck Four-Wheel Drive 10-Speed Automatic
ClearShift

Sponsored by ClearShift

2026 GMC Sierra 3500HD

Denali Ultimate Crew Cab 4WD

16,232 mi

Highlands Ranch, CO
42 mi away
Good Deal

$83,722

Year:
2023
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
White
Combined gas mileage:
18 MPG
Fuel type:
Gasoline
Transmission:
Automatic
Mileage:
46,486
Stock #:
TED24583B
VIN:
1GTUUBED1PZ136396
White 2023 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic

Sponsored Listing

2023 GMC Sierra 1500

SLE Crew Cab 4WD

46,486 mi

Northglenn, CO
20 mi away
Fair Deal

$37,846

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
310 hp 2.7L I4
Exterior color:
Onyx Black
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
5
Stock #:
G260641
VIN:
1GTPUCEK4TZ388199
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic

 

2026 GMC Sierra 1500

Elevation Crew Cab 4WD

Henderson, CO
23 mi away

New car

MSRP $57,045

$47,795

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
310 hp 2.7L I4
Exterior color:
Summit White
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
5
Stock #:
G260659
VIN:
1GTPUCEK5TZ396649
Summit White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic

 

2026 GMC Sierra 1500

Elevation Crew Cab 4WD

Henderson, CO
23 mi away

New car

MSRP $56,550

$47,360

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
Fuel type:
Diesel
Interior color:
Black (Obsidian Rush)
Transmission:
Automatic
Mileage:
120
Stock #:
L284613
VIN:
3GTUUFE84TG284613
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,895

 

2026 GMC Sierra 1500

AT4X Crew Cab 4WD

Longmont, CO
3 mi away

New car

MSRP $84,980

$72,026

$70,026

Year:
2025
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Summit White
Fuel type:
Biodiesel
Interior color:
Jet Black with Kalahari accents
Transmission:
Automatic
Mileage:
35,681
Stock #:
WP8597
VIN:
1GT4UPEY9SF369470
Summit White 2025 GMC Sierra 2500HD Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,790

 

2025 GMC Sierra 2500HD

AT4 Crew Cab 4WD

35,681 mi

Thornton, CO
20 mi away
Good Deal

$67,974

$65,983

Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Interior color:
Gray
Transmission:
Automatic
Mileage:
21,827
Stock #:
29260187
VIN:
3GKALMEG4TL333094
Black 2026 GMC Terrain SUV / Crossover Front-Wheel Drive Automatic
Price drop

-$1,000

 

2026 GMC Terrain

Elevation FWD

21,827 mi

Store transfer to Loveland, CO
Price includes $1,099 shipping
Fair Deal

$26,097

$25,097

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
Fuel type:
Diesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
5
Stock #:
TZ114794
VIN:
1GTUUGE8XTZ114794
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

Denali Crew Cab 4WD

Golden, CO
31 mi away

New car

MSRP $80,340

$65,999

$63,999

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Glacier White Tricoat
Fuel type:
Diesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
10
Stock #:
G260703
VIN:
3GTUUGE81TG298460
Glacier White Tricoat 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$1,505

 

2026 GMC Sierra 1500

Denali Crew Cab 4WD

Henderson, CO
23 mi away

New car

MSRP $75,279

$64,841

$63,336

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Sterling Metallic
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
2,552
Stock #:
G330164
VIN:
3GTUUDE87TG330164
Sterling Metallic 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,895

 

2026 GMC Sierra 1500

SLT Crew Cab 4WD

Boulder, CO
12 mi away

New car

MSRP $69,430

$56,763

$54,763

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Onyx Black
Combined gas mileage:
15 MPG
Fuel type:
Gasoline
Interior color:
Alpine Umber
Transmission:
Automatic
Mileage:
6
Stock #:
G260603
VIN:
1GTUUHEL8TZ374816
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic

 

2026 GMC Sierra 1500

Denali Ultimate Crew Cab 4WD

Henderson, CO
23 mi away

New car

MSRP $88,930

$75,854

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Sterling Metallic
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
14
Stock #:
G642487
VIN:
3GTUUGE88TG442487
Sterling Metallic 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

Denali Crew Cab 4WD

Brighton, CO
21 mi away

New car

MSRP $74,480

$62,585

$60,585

Year:
2025
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Sterling Metallic
Fuel type:
Biodiesel
Interior color:
Jet Black with Kalahari accents
Transmission:
Automatic
Mileage:
32,138
Stock #:
MP8660
VIN:
1GT4UPEYXSF369994
Sterling Metallic 2025 GMC Sierra 2500HD Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,961

 

2025 GMC Sierra 2500HD

AT4 Crew Cab 4WD

32,138 mi

Thornton, CO
20 mi away
Good Deal

$67,658

$65,496

Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Onyx Black
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
8-Speed Automatic
Mileage:
77,030
Stock #:
MZ355246
VIN:
1GTR9CED2MZ355246
Onyx Black 2021 GMC Sierra 1500 Pickup Truck Four-Wheel Drive 8-Speed Automatic
New arrival

Sponsored Listing

2021 GMC Sierra 1500

Elevation Double Cab 4WD

77,030 mi

Golden, CO
31 mi away
Fair Deal

$31,722

Year:
2026
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Glacier White Tricoat
Fuel type:
Biodiesel
Interior color:
Alpine Umber
Transmission:
10-Speed Automatic
Mileage:
16,232
Stock #:
KM130582
VIN:
1GT4UYEYXTF130582
Glacier White Tricoat 2026 GMC Sierra 3500HD Pickup Truck Four-Wheel Drive 10-Speed Automatic
ClearShift

Sponsored by ClearShift

2026 GMC Sierra 3500HD

Denali Ultimate Crew Cab 4WD

16,232 mi

Highlands Ranch, CO
42 mi away
Good Deal

$83,722

Year:
2023
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
White
Combined gas mileage:
18 MPG
Fuel type:
Gasoline
Transmission:
Automatic
Mileage:
46,486
Stock #:
TED24583B
VIN:
1GTUUBED1PZ136396
White 2023 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic

Sponsored Listing

2023 GMC Sierra 1500

SLE Crew Cab 4WD

46,486 mi

Northglenn, CO
20 mi away
Fair Deal

$37,846

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
310 hp 2.7L I4
Exterior color:
Onyx Black
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
5
Stock #:
G260641
VIN:
1GTPUCEK4TZ388199
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic

 

2026 GMC Sierra 1500

Elevation Crew Cab 4WD

Henderson, CO
23 mi away

New car

MSRP $57,045

$47,795

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
310 hp 2.7L I4
Exterior color:
Summit White
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
5
Stock #:
G260659
VIN:
1GTPUCEK5TZ396649
Summit White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic

 

2026 GMC Sierra 1500

Elevation Crew Cab 4WD

Henderson, CO
23 mi away

New car

MSRP $56,550

$47,360

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
Fuel type:
Diesel
Interior color:
Black (Obsidian Rush)
Transmission:
Automatic
Mileage:
120
Stock #:
L284613
VIN:
3GTUUFE84TG284613
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,895

 

2026 GMC Sierra 1500

AT4X Crew Cab 4WD

Longmont, CO
3 mi away

New car

MSRP $84,980

$72,026

$70,026

Year:
2025
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Summit White
Fuel type:
Biodiesel
Interior color:
Jet Black with Kalahari accents
Transmission:
Automatic
Mileage:
35,681
Stock #:
WP8597
VIN:
1GT4UPEY9SF369470
Summit White 2025 GMC Sierra 2500HD Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,790

 

2025 GMC Sierra 2500HD

AT4 Crew Cab 4WD

35,681 mi

Thornton, CO
20 mi away
Good Deal

$67,974

$65,983

Year:
2026
Make:
GMC
Model:
Terrain
Body type:
SUV / Crossover
Doors:
4 doors
Drivetrain:
Front-Wheel Drive
Engine:
175 hp 1.5L I4
Exterior color:
Black
Combined gas mileage:
27 MPG
Fuel type:
Gasoline
Interior color:
Gray
Transmission:
Automatic
Mileage:
21,827
Stock #:
29260187
VIN:
3GKALMEG4TL333094
Black 2026 GMC Terrain SUV / Crossover Front-Wheel Drive Automatic
Price drop

-$1,000

 

2026 GMC Terrain

Elevation FWD

21,827 mi

Store transfer to Loveland, CO
Price includes $1,099 shipping
Fair Deal

$26,097

$25,097

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
Fuel type:
Diesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
5
Stock #:
TZ114794
VIN:
1GTUUGE8XTZ114794
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

Denali Crew Cab 4WD

Golden, CO
31 mi away

New car

MSRP $80,340

$65,999

$63,999

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Glacier White Tricoat
Fuel type:
Diesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
10
Stock #:
G260703
VIN:
3GTUUGE81TG298460
Glacier White Tricoat 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$1,505

 

2026 GMC Sierra 1500

Denali Crew Cab 4WD

Henderson, CO
23 mi away

New car

MSRP $75,279

$64,841

$63,336

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Sterling Metallic
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
2,552
Stock #:
G330164
VIN:
3GTUUDE87TG330164
Sterling Metallic 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,895

 

2026 GMC Sierra 1500

SLT Crew Cab 4WD

Boulder, CO
12 mi away

New car

MSRP $69,430

$56,763

$54,763

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Onyx Black
Combined gas mileage:
15 MPG
Fuel type:
Gasoline
Interior color:
Alpine Umber
Transmission:
Automatic
Mileage:
6
Stock #:
G260603
VIN:
1GTUUHEL8TZ374816
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic

 

2026 GMC Sierra 1500

Denali Ultimate Crew Cab 4WD

Henderson, CO
23 mi away

New car

MSRP $88,930

$75,854

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Sterling Metallic
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
14
Stock #:
G642487
VIN:
3GTUUGE88TG442487
Sterling Metallic 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

Denali Crew Cab 4WD

Brighton, CO
21 mi away

New car

MSRP $74,480

$62,585

$60,585

Year:
2025
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Sterling Metallic
Fuel type:
Biodiesel
Interior color:
Jet Black with Kalahari accents
Transmission:
Automatic
Mileage:
32,138
Stock #:
MP8660
VIN:
1GT4UPEYXSF369994
Sterling Metallic 2025 GMC Sierra 2500HD Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,961

 

2025 GMC Sierra 2500HD

AT4 Crew Cab 4WD

32,138 mi

Thornton, CO
20 mi away
Good Deal

$67,658

$65,496

Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Onyx Black
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
8-Speed Automatic
Mileage:
77,030
Stock #:
MZ355246
VIN:
1GTR9CED2MZ355246
Onyx Black 2021 GMC Sierra 1500 Pickup Truck Four-Wheel Drive 8-Speed Automatic
New arrival

Sponsored Listing

2021 GMC Sierra 1500

Elevation Double Cab 4WD

77,030 mi

Golden, CO
31 mi away
Fair Deal

$31,722

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