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Used 2020 GMC Sierra 1500 for Sale near Denver, CO

468 results
Denver, CO
2021 GMC Sierra 1500 Elevation Crew Cab 4WD Alpine Buick GMC

2021 GMC Sierra 1500

Elevation Crew Cab 4WD

48,361 miles

$36,761

Good Deal
Highlands Ranch, CO
13 mi away
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:
Summit White
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Jet Black, Cloth Seat Trim
Transmission:
Automatic
Mileage:
48,361
Stock number:
AMG297344
VIN:
3GTU9CET5MG297344

Sponsored

2021 GMC Sierra 1500 SLT Crew Cab 4WD

2021 GMC Sierra 1500

SLT Crew Cab 4WD

103,379 miles

$32,988

Good Deal
Denver, CO
5 mi away
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:
White
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
8-Speed Automatic
Mileage:
103,379
Stock number:
B51488
VIN:
3GTU9DED3MG308159

Sponsored

2019 GMC Sierra 1500 Double Cab 4WD

2019 GMC Sierra 1500

Double Cab 4WD

61,753 miles

$27,597

Good Deal
Loveland, CO
46 mi away
Year:
2019
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
4.3L V6 Flex Fuel Vehicle
Exterior color:
Summit White
Fuel type:
Flex Fuel Vehicle
Interior color:
Jet Black
Transmission:
6-Speed Automatic
Mileage:
61,753
Stock number:
KM297045
VIN:
1GTR9AEH2KZ297045

Sponsored

2021 GMC Sierra 1500 Elevation Crew Cab 4WD

2021 GMC Sierra 1500

Elevation Crew Cab 4WD

120,355 miles

$28,202

Great Deal
Boulder, CO
23 mi away
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:
Summit White
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
120,355
Stock number:
G125192
VIN:
3GTU9CET4MG125192

2021 GMC Sierra 1500 AT4 Crew Cab 4WD

2021 GMC Sierra 1500

AT4 Crew Cab 4WD

81,605 miles

$39,797

Fair Deal
Store transfer to Denver, CO
800 mi away • Price includes $799 shipping Price includes $799 shipping
Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Black
Combined gas mileage:
16 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Mileage:
81,605
Stock number:
26095437
VIN:
3GTP9EEL6MG413823

2020 GMC Sierra 1500 Denali Crew Cab 4WD

2020 GMC Sierra 1500

Denali Crew Cab 4WD

37,891 miles

$42,400

Good Deal
Highlands Ranch, CO
13 mi away
Year:
2020
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Pacific Blue Metallic
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Gray (Dark Walnut/Dark Ash Grey)
Transmission:
Automatic
Mileage:
37,891
Stock number:
DPLZ225419
VIN:
1GTU9FEL2LZ225419

Preparing for a close up...

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2020 GMC Sierra 1500

Denali Crew Cab 4WD

64,409 miles

$37,897

Great Deal
Parker, CO
7 mi away
Year:
2020
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
277 hp 3L I6 Diesel
Exterior color:
Onyx Black
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
64,409
Stock number:
250927
VIN:
3GTU9FET2LG368659

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2021 GMC Sierra 1500

Elevation Crew Cab 4WD

84,105 miles

$32,988

Good Deal
Dacono, CO
23 mi away
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:
Pacific Blue Metallic
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
84,105
Stock number:
P9208A
VIN:
1GTU9CET6MZ294291

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2021 GMC Sierra 1500

Elevation Crew Cab 4WD

85,564 miles

$31,302

Great Deal
Brighton, CO
18 mi away
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:
Onyx Black
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
85,564
Stock number:
S5986A
VIN:
3GTU9CET5MG162347

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2019 GMC Sierra 1500

AT4 Crew Cab 4WD

105,958 miles

$31,600

Great Deal
Denver, CO
6 mi away
Year:
2019
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
Fuel type:
Gasoline
Interior color:
Jet Black With Kalahari Accents
Transmission:
Automatic
Mileage:
105,958
Stock number:
KG164392
VIN:
3GTP9EEL1KG164392

Preparing for a close up...

Photos coming soon

2019 GMC Sierra 1500

Double Cab 4WD

61,753 miles

$27,597

Good Deal
Loveland, CO
46 mi away
Year:
2019
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
4.3L V6 Flex Fuel Vehicle
Exterior color:
Summit White
Fuel type:
Flex Fuel Vehicle
Interior color:
Jet Black
Transmission:
6-Speed Automatic
Mileage:
61,753
Stock number:
KM297045
VIN:
1GTR9AEH2KZ297045

Preparing for a close up...

Photos coming soon

2019 GMC Sierra 1500

Denali Crew Cab 4WD

46,764 miles

$39,999

Good Deal
Golden, CO
11 mi away
Year:
2019
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
White Frost Tricoat
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Gray (Dark Walnut/Dark Ash Grey)
Transmission:
Automatic
Mileage:
46,764
Stock number:
KZ309964
VIN:
1GTU9FEL0KZ309964

Preparing for a close up...

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2020 GMC Sierra 1500

Denali Crew Cab 4WD

59,581 miles

$39,997

Fair Deal
Highlands Ranch, CO
13 mi away
Year:
2020
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Summit White
Combined gas mileage:
19 MPG
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
10-Speed Automatic
Mileage:
59,581
Stock number:
KM111036
VIN:
1GTU9FED7LZ111036

Preparing for a close up...

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2019 GMC Sierra 1500

Denali Crew Cab 4WD

133,515 miles

$31,888

Fair Deal
Greeley, CO
48 mi away
Year:
2019
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
White
Fuel type:
Gasoline
Interior color:
Brown (Tan)
Transmission:
8-Speed Automatic
Mileage:
133,515
Stock number:
376512
VIN:
1GTU9FEL3KZ376512

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2021 GMC Sierra 1500

Denali Crew Cab 4WD

135,211 miles

$30,995

Fair Deal
Longmont, CO
28 mi away
Year:
2021
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Black
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Mileage:
135,211
Stock number:
17245
VIN:
1GTU9FEL9MZ225841

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2021 GMC Sierra 1500

SLT Crew Cab 4WD

121,386 miles

$29,900

Good Deal
Littleton, CO
13 mi away
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:
Black
Combined gas mileage:
24 MPG
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
121,386
Stock number:
CJ 281301
VIN:
1GTU9DET9MZ281301

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Photos coming soon

2019 GMC Sierra 1500

AT4 Crew Cab 4WD

71,751 miles

$38,498

Fair Deal
Parker, CO
19 mi away
Year:
2019
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Pacific Blue Metallic
Fuel type:
Gasoline
Interior color:
Jet Black With Kalahari Accents
Transmission:
Automatic
Mileage:
71,751
Stock number:
KG136412
VIN:
3GTP9EEL6KG136412

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  1. Home
  2. / Used Cars
  3. / GMC Sierra 1500
  4. / 2020
  5. / Colorado
  6. / Denver
Overview
Reviews
FAQs
Picture of 2020 GMC Sierra 1500

The new Sierra 1500 AT4 is far too nice to be a work truck, but it represents what modern pickup shoppers seek.

It’s no surprise that trucks have improved and evolved over the years. After all, think about an average sedan from the early 1980s compared with a modern 2020 vehicle. Yet because pickup trucks are largely confined to a common shape, many shoppers are still surprised to see how nice they have become. This is especially true if your memory of trucks includes a vinyl bench seat.

Modern trucks heavily incorporate utility-minded innovations. Cargo-management tools, side steps, and bed steps make for a more useful vehicle. Under the hood, turbocharging has made V6 and even 4-cylinder engines usable, delivering the power of the larger engines they aim to supplant. And finally, cabins have become nicer and more comfortable than previously imagined for a pickup.

This evolution speaks to how trucks get used as family vehicles that can also do work. There are the work trucks, but there are also trucks like the 2020 GMC Sierra 1500, which has many of the creature comforts of SUVs and crossovers. It says “I want a truck, but I could probably be used as a minivan.”

But somewhere in the middle sits Sierra's AT4 trim. It’s comfortable, sure, but it’s also capable. Does that make it a good fit for both the worksite and the daily commute?

4.7 Overall rating

(49 reviews)
Jeremy S
5.0
Reviewed a 2020 GMC Denali Crew Cab 4WD on Nov 23, 2024

Great truck, great value, awesome vehicle accessories package. Highly recommend this truck.

Heriberto M
5.0
Reviewed a 2020 GMC Sierra 1500 on Jun 24, 2024

It’s a reliable truck great engine and just a great choice for pickup truck

Robert B
5.0
Reviewed a 2020 GMC Sierra 1500 on Mar 17, 2024

The truck has everything I wanted in a truck. It’s comparable to a Chevy Silverado 1500

Deborah E
5.0
Reviewed a 2020 GMC Sierra 1500 on Aug 07, 2022

Absolutely stunning vehicle. Pure luxury pick-up truck. Serious power, w/a 6.2L V8 engine; smooth, wonderful ride, lots of driver convenience & safety features; comfortable seating, roomy cab interior....I could go on. GMC has left nothing out of their Sierra Denali line. Beautiful truck - everyone Ive talked to feels the same. Commanding presence on the road. Tops Dodge Ram & Ford models, in my opinion. I have a 2020 model. The 2023 model tops even THAT!!!

Garry R
5.0
Reviewed a 2020 GMC Sierra 1500 on Feb 12, 2022

Great design and tecnology. Spacious and smooth ride. Comfortable for passengers and driver. The Denali leaves nothing to be desired.

2020 GMC Sierra 1500 FAQs

How much does the 2020 GMC Sierra 1500 cost in Denver, CO?

The average 2020 GMC Sierra 1500 costs about $35,215.88. The average price has decreased by -6.8% since last year. The 468 for sale near Denver, CO on CarGurus, range from $16,397 to $63,934 in price.

Is the 2020 GMC Sierra 1500 a good car?

CarGurus experts gave the 2020 GMC Sierra 1500 an overall rating of 8.3/10 and 2020 GMC Sierra 1500 owners have rated the vehicle a 4.7/5 stars on average. If a vehicle has both strong expert and owner reviews, you can feel confident in its quality. If either expert reviews, owner reviews, or both are spotty, you might want to do some research to figure out where the car falls short.

How many 2020 GMC Sierra 1500 vehicles in Denver, CO have no reported accidents or damage?

396 out of 468 for sale near Denver, CO have no reported accidents or damage.

Is the 2020 GMC Sierra 1500 safe?

CarGurus experts gave the 2020 GMC Sierra 1500 a safety rating of 8/10.

What is the fuel economy of the 2020 GMC Sierra 1500?

Depending on the engine and options, the 2020 GMC Sierra 1500 gets between 16 and 26 MPG (or MPGe).

What fuel types are available?

Diesel, Flex Fuel Vehicle, Gasoline engines are available.

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