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Used 2021 GMC Sierra 2500 AT4 trucks for sale near me

Filters 6 Year Trim Model Price & payment Make Mileage All filters
1 match 30 miles from 20149
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Est. $400 /mo*
Down Payment
$0
Net trade-in value
$0
Months
72
APR
7.0%
Sales tax
0.0%

*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.

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2021 GMC Sierra 2500 AT4
2021 GMC Sierra 2500 AT4
2021 GMC Sierra 2500 AT4
2021 GMC Sierra 2500 AT4
2021 GMC Sierra 2500 AT4
2021 GMC Sierra 2500 AT4 View all 47 photos

Used

2021 GMC Sierra 2500 AT4

44,669 mi.
$62,499
Est. $1,129/mo*
Get the AutoCheck Report
Leesburg Buick GMC
Not rated Dealerships need five reviews in the past 24 months before we can display a rating. (2 reviews)
Leesburg, VA (7 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Pacific Blue Metallic
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 40081A
VIN: 1GT49PEY8MF219547

Features

Convenience: Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat

Reviews

Leesburg Buick GMC review

I had a wonderful experience with Caleb Polen, both

February 3, 2025
By SUSAN HOUCK from Frederick, MD

I had a wonderful experience with Caleb Polen, both trading in my vehicle and purchasing the new one. I would highly recommend Leesburg Buick GMC and Caleb.

2021 GMC Sierra 2500 AT4 review

Beautiful truck

October 24, 2023
By T Jones from Oakland Ca
Owns this car

I love my 2021 GMC Denali 2500HD. I have gotten more complements on this truck than any other vehicle that I have owned. I get great highway fuel milage average 19-26mpg,which is great for a heavy duty truck!

There are 4 matching cars close to your year range.

2020 GMC Sierra 2500 AT4
2020 GMC Sierra 2500 AT4
2020 GMC Sierra 2500 AT4
2020 GMC Sierra 2500 AT4
2020 GMC Sierra 2500 AT4
2020 GMC Sierra 2500 AT4 View all 30 photos

Used

2020 GMC Sierra 2500 AT4

68,055 mi.
$55,000
Est. $994/mo*
Free CARFAX Report
Sheehy Ford Lincoln of Gaithersburg
Gaithersburg, MD (17 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Dark Sky Metallic
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: CEC6974A
VIN: 1GT49PEY1LF287588

Features

Convenience: Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4 View all 54 photos

Used

2023 GMC Sierra 2500 AT4

49,207 mi.
$68,850 $400 price drop
Est. $1,244/mo*
Get the AutoCheck Report
Country Diesels
Warrenton, VA (30 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Cayenne Red Tintcoat
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: S7287
VIN: 1GT49PEY2PF185383

Features

Convenience: Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Power Folding Mirrors, Power Liftgate, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, HomeLink, Premium Sound System, Satellite Radio, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4
2023 GMC Sierra 2500 AT4 View all 56 photos

Used

2023 GMC Sierra 2500 AT4

62,864 mi.
$62,777 $222 price drop
Est. $1,135/mo*
Free AutoCheck Report
Country Chevrolet, Inc. (Warrenton)
Warrenton, VA (28 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Forest Metallic
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: P8952
VIN: 1GT49PEY5PF102559

Features

Convenience: Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Stability Control
Seating: Leather Seats
2022 GMC Sierra 2500 AT4
2022 GMC Sierra 2500 AT4
2022 GMC Sierra 2500 AT4
2022 GMC Sierra 2500 AT4
2022 GMC Sierra 2500 AT4
2022 GMC Sierra 2500 AT4 View all 47 photos

Used

2022 GMC Sierra 2500 AT4

58,310 mi.
$57,777 $222 price drop
Est. $1,044/mo*
Free AutoCheck Report
Country Chevrolet, Inc. (Warrenton)
Warrenton, VA (28 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Summit White
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: P8826
VIN: 1GT49PEY6NF136166

Features

Convenience: Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Stability Control
Seating: Leather Seats, Memory Seat
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GMC Sierra 2500 prices by year

Model year Prices from Deals
2025 GMC Sierra 2500 AT4 $67,939 12 Great deals
2024 GMC Sierra 2500 AT4 $56,900 229 Good deals
2023 GMC Sierra 2500 AT4 $52,472 112 Good deals
2022 GMC Sierra 2500 AT4 $38,114 22 Great deals
2020 GMC Sierra 2500 AT4 $40,995 38 Good deals

About the 2021 GMC Sierra 2500 AT4

Basics

Base shown (base trim).

Seating
3
Door count
2
Drivetrain
Rear-wheel drive
Combined MPG
0
Transmission
6-Speed A/T
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
Side view of the 2021 GMC Sierra 2500 AT4
FAQs

How much does the 2021 GMC Sierra 2500 AT4 cost?

The 2021 GMC Sierra 2500 AT4 price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 2500 AT4 is $56,677, with pricing starting at $38,497.

What are some similar vehicles and competitors of the 2021 GMC Sierra 2500 AT4?

The 2021 GMC Sierra 2500 AT4 compares to and/or competes against the following vehicles:

Is the 2021 GMC Sierra 2500 AT4 reliable?

The 2021 GMC Sierra 2500 has an average reliability rating of 4.1 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 2500 owners.

Is the 2021 GMC Sierra 2500 AT4 a good truck?

Below are the Cars.com consumer ratings for the 2021 GMC Sierra 2500.

(28 reviews)
Rating breakdown (out of 5):
  • Comfort 4.8
  • Interior 4.6
  • Performance 4.4
  • Value 4.0
  • Exterior 4.6
  • Reliability 4.1
Ratings (28 reviews)

78% of drivers recommend this car

Rating breakdown (out of 5):
  • Comfort 4.8
  • Interior 4.6
  • Performance 4.4
  • Value 4.0
  • Exterior 4.6
  • Reliability 4.1

*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.

**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.

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Basics
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‡Monthly budget search results are estimated based on a 72-month loan term with $0 down payment, $0 trade-in value, 0.0 % sales tax and 7.0 % APR. Inputs can be personalized using the calculator.
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GMC Sierra 2500 trims
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