2025 GMC Sierra 3500

new

Automatic

Summit White exterior

$67,588

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$67,588

MSRP: $66,993

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

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2025 GMC Sierra 3500

new

Automatic

Summit White exterior

$67,588

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$67,588

MSRP: $66,993

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

Summit White exterior

$67,588

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$67,588

MSRP: $66,993

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

View Details

2025 GMC Sierra 3500

new

Automatic

Summit White exterior

$67,588

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$67,588

MSRP: $66,993

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

View Details

2025 GMC Sierra 3500

new

Automatic

Summit White exterior

$67,588

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$67,588

MSRP: $66,993

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

View Details

2025 GMC Sierra 3500

new

Automatic

White exterior

$67,814

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$67,814

MSRP: $67,215

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

Red exterior

$68,382

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$68,382

MSRP: $67,783

red exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

Summit White exterior

$68,495

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$68,495

MSRP: $67,900

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

View Details

2025 GMC Sierra 3500

new

Automatic

Summit White exterior

$69,135

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$69,135

MSRP: $68,540

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

View Details

2025 GMC Sierra 3500

new

Automatic

White exterior

$69,199

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$69,199

MSRP: $68,600

white exterior, jet black, vinyl seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

White exterior

$69,619

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$69,619

MSRP: $69,020

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

White exterior

$69,619

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$69,619

MSRP: $69,020

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

White exterior

$71,877

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$71,877

MSRP: $71,278

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2024 GMC Sierra 3500

new

Automatic

White exterior

$72,099

Weld County Garage Buick GMC

4.6

2024 GMC Sierra 3500 | new

$72,099

MSRP: $71,500

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2024 GMC Sierra 3500

used

Automatic

Summit White exterior

$74,470

Transwest GMC Isuzu

4.6

2024 GMC Sierra 3500 | used

$74,470

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

View Details

2025 GMC Sierra 3500

new

Automatic

Gray exterior

$74,999

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$74,999

MSRP: $74,400

gray exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

Gray exterior

$74,999

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$74,999

MSRP: $74,400

gray exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

Gray exterior

$74,999

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$74,999

MSRP: $74,400

gray exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

Summit White exterior

$82,495

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$82,495

MSRP: $84,900

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

White exterior

$86,970

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$86,970

MSRP: $86,375

white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

Thunderstorm Gray exterior

$87,810

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$87,810

MSRP: $89,215

thunderstorm gray exterior, jet black w/kalahari accents interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

White exterior

$88,544

Weld County Garage Buick GMC

4.6

2025 GMC Sierra 3500 | new

$88,544

MSRP: $91,945

white exterior, jet black, forge perforated leather seating surfaces interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Summit White exterior

$89,315

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$89,315

MSRP: $88,720

summit white exterior, jet black w/kalahari accents interior

Four Wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

View Details

2024 GMC Sierra 3500

new

Automatic

Black exterior

$89,419

Weld County Garage Buick GMC

4.6

2024 GMC Sierra 3500 | new

$89,419

MSRP: $92,820

black exterior, jet black, forge perforated leather seating surfaces interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

View Details

2024 GMC Sierra 3500

used

Automatic

White exterior

$89,999

Weld County Garage Buick GMC

4.6

2024 GMC Sierra 3500 | used

$89,999

white exterior, jet black, forge perforated leather seating surfaces interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

Sterling Metallic exterior

$90,170

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$90,170

MSRP: $89,575

sterling metallic exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

View Details

2025 GMC Sierra 3500

new

Automatic

White exterior

$90,545

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$90,545

MSRP: $89,950

white exterior, jet black interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

View Details

2025 GMC Sierra 3500

new

Automatic

Sterling Metallic exterior

$90,610

Transwest GMC Isuzu

4.6

2025 GMC Sierra 3500 | new

$90,610

MSRP: $90,015

sterling metallic exterior, jet black w/kalahari accents interior

Automatic

Four-wheel Drive

Transwest GMC Isuzu

4.6

Contact Seller

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2024 GMC Sierra 3500

new

Automatic

White Frost Tri-Coat exterior

$95,750

Castle Rock Chevrolet GMC

4.6

2024 GMC Sierra 3500 | new

$95,750

MSRP: $100,750

white frost tri-coat exterior, alpine umber interior

Automatic

Four-wheel Drive

Castle Rock Chevrolet GMC

4.6

Contact Seller

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2024 GMC Sierra 3500

new

Automatic

Gray exterior

$96,334

Weld County Garage Buick GMC

4.6

2024 GMC Sierra 3500 | new

$96,334

MSRP: $99,735

gray exterior, alpine umber, full grain leather seating surfaces interior

Automatic

Four-wheel Drive

Weld County Garage Buick GMC

4.6

Contact Seller

View Details

GMC Sierra 3500 vehicles for Sale in Colorado

179 Results

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2024 GMC Sierra 3500 | new

2024 GMC Sierra 3500 | used

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2024 GMC Sierra 3500 | new

2024 GMC Sierra 3500 | used

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2024 GMC Sierra 3500 | new

2024 GMC Sierra 3500 | new