2026 GMC Sierra 3500

new

Automatic

White exterior

$68,912

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$68,912

MSRP: $69,313

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

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2026 GMC Sierra 3500

new

Automatic

White exterior

$68,912

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$68,912

MSRP: $69,313

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

Contact Seller

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2026 GMC Sierra 3500

new

Automatic

White exterior

$69,729

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$69,729

MSRP: $70,130

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

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2026 GMC Sierra 3500

new

Automatic

White exterior

$69,729

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$69,729

MSRP: $70,130

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

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2026 GMC Sierra 3500

new

Automatic

White exterior

$70,586

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$70,586

MSRP: $58,718

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

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2025 GMC Sierra 3500

new

Automatic

White exterior

$74,884

Weld County Garage GMC Hummer

4.4

2025 GMC Sierra 3500 | new

$74,884

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

Contact Seller

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2026 GMC Sierra 3500

new

Automatic

White exterior

$76,565

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$76,565

MSRP: $68,508

white exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

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2026 GMC Sierra 3500

used

Automatic

Sterling exterior

$77,397

Castle Rock Chevrolet GMC

4.4

2026 GMC Sierra 3500 | used

$77,397

sterling exterior, jet black interior

Automatic

Four-wheel Drive

Castle Rock Chevrolet GMC

4.4

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2026 GMC Sierra 3500

new

Automatic

Tan exterior

$77,599

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$77,599

MSRP: $80,350

tan exterior, jet black, cloth seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

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2025 GMC Sierra 3500

used

Automatic

Metallic exterior

$77,997

Castle Rock Chevrolet GMC

4.4

2025 GMC Sierra 3500 | used

$77,997

metallic exterior, jet black interior

Automatic

Four-wheel Drive

Castle Rock Chevrolet GMC

4.4

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

White exterior

$78,199

Weld County Garage GMC Hummer

4.4

2025 GMC Sierra 3500 | new

$78,199

MSRP: $68,088

white exterior, jet black, vinyl seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

White exterior

$78,199

Weld County Garage GMC Hummer

4.4

2025 GMC Sierra 3500 | new

$78,199

MSRP: $68,088

white exterior, jet black, vinyl seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

White exterior

$78,199

Weld County Garage GMC Hummer

4.4

2025 GMC Sierra 3500 | new

$78,199

MSRP: $68,088

white exterior, jet black, vinyl seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

Contact Seller

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2025 GMC Sierra 3500

new

Automatic

White exterior

$78,199

Weld County Garage GMC Hummer

4.4

2025 GMC Sierra 3500 | new

$78,199

MSRP: $68,088

white exterior, jet black, vinyl seat trim interior

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

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2025 GMC Sierra 3500

used

Automatic

White Frost Tricoat exterior

$80,536

Alpine Buick GMC, Littleton/Denver/Highlands Ranch

4.4

2025 GMC Sierra 3500 | used

$80,536

white frost tricoat exterior, jet black interior

Automatic

Four-wheel Drive

Alpine Buick GMC, Littleton/Denver/Highlands Ranch

4.4

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2026 GMC Sierra 3500

used

Automatic

Summit White exterior

$80,698

Castle Rock Chevrolet GMC

4.4

2026 GMC Sierra 3500 | used

$80,698

summit white exterior, black interior

Automatic

Four-wheel Drive

Castle Rock Chevrolet GMC

4.4

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2026 GMC Sierra 3500

new

Automatic

Summit White exterior

$85,816

Castle Rock Chevrolet GMC

4.4

2026 GMC Sierra 3500 | new

$85,816

MSRP: $91,045

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Castle Rock Chevrolet GMC

4.4

Contact Seller

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2026 GMC Sierra 3500

new

Automatic

Metallic exterior

$86,016

Castle Rock Chevrolet GMC

4.4

2026 GMC Sierra 3500 | new

$86,016

MSRP: $91,719

metallic exterior, atmosphere interior

Automatic

Four-wheel Drive

Castle Rock Chevrolet GMC

4.4

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2026 GMC Sierra 3500

new

Automatic

Coastal Dune exterior

$87,609

Alpine Buick GMC, Littleton/Denver/Highlands Ranch

4.4

2026 GMC Sierra 3500 | new

$87,609

MSRP: $92,609

coastal dune exterior, jet black w/kalahari accents interior

Automatic

Four-wheel Drive

Alpine Buick GMC, Littleton/Denver/Highlands Ranch

4.4

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2026 GMC Sierra 3500

new

Automatic

Volcanic Red Tintcoat exterior

$87,850

Alpine Buick GMC, Littleton/Denver/Highlands Ranch

4.4

2026 GMC Sierra 3500 | new

$87,850

MSRP: $92,850

volcanic red tintcoat exterior, jet black w/kalahari accents interior

Automatic

Four-wheel Drive

Alpine Buick GMC, Littleton/Denver/Highlands Ranch

4.4

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2026 GMC Sierra 3500

new

Automatic

Black exterior

$88,849

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$88,849

MSRP: $94,165

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

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

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2026 GMC Sierra 3500

new

Automatic

Sterling Metallic exterior

$90,959

Alpine Buick GMC, Littleton/Denver/Highlands Ranch

4.4

2026 GMC Sierra 3500 | new

$90,959

MSRP: $91,959

sterling metallic exterior, jet black w/kalahari accents interior

Automatic

Four-wheel Drive

Alpine Buick GMC, Littleton/Denver/Highlands Ranch

4.4

Contact Seller

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2026 GMC Sierra 3500

new

Automatic

White exterior

$93,269

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$93,269

MSRP: $96,670

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

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

Contact Seller

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2026 GMC Sierra 3500

new

Automatic

White exterior

$100,539

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$100,539

MSRP: $100,940

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

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

Contact Seller

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2026 GMC Sierra 3500

new

Automatic

White exterior

$106,574

Weld County Garage GMC Hummer

4.4

2026 GMC Sierra 3500 | new

$106,574

MSRP: $106,975

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

Automatic

Four-wheel Drive

Weld County Garage GMC Hummer

4.4

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2018 GMC Sierra 3500

used

Automatic

Onyx Black exterior

$43,728

Mountain Hyundai

4.3

2018 GMC Sierra 3500 | used

$43,728

onyx black exterior, jet black interior

Automatic

Four-wheel Drive

Mountain Hyundai

4.3

Contact Seller

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2023 GMC Sierra 3500

used

Automatic

White exterior

$43,797

Springs Automotive Group - Platte Ave

4.3

2023 GMC Sierra 3500 | used

$43,797

white exterior, jet black interior

Automatic

Four-wheel Drive

Springs Automotive Group - Platte Ave

4.3

Contact Seller

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2024 GMC Sierra 3500

used

Automatic

Summit White exterior

$62,797

Springs Automotive Group - Platte Ave

4.3

2024 GMC Sierra 3500 | used

$62,797

summit white exterior, jet black interior

Automatic

Four-wheel Drive

Springs Automotive Group - Platte Ave

4.3

Contact Seller

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2024 GMC Sierra 3500

used

Automatic

Titanium exterior

$74,793

Springs Automotive Group - Platte Ave

4.3

2024 GMC Sierra 3500 | used

$74,793

titanium exterior, jet black interior

Automatic

Four-wheel Drive

Springs Automotive Group - Platte Ave

4.3

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2019 GMC Sierra 3500

used

Automatic

Summit White exterior

$43,999

AutoNation Buick GMC West

4.2

2019 GMC Sierra 3500 | used

$43,999

summit white exterior, black interior

Automatic

Four-wheel Drive

AutoNation Buick GMC West

4.2

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GMC Sierra 3500 vehicles for Sale in Colorado

155 Results

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2025 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | used

2026 GMC Sierra 3500 | new

2025 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 | used

2026 GMC Sierra 3500 | used

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2026 GMC Sierra 3500 | new

2018 GMC Sierra 3500 | used

2023 GMC Sierra 3500 | used

2024 GMC Sierra 3500 | used

2024 GMC Sierra 3500 | used

2019 GMC Sierra 3500 | used