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*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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Used
2021 GMC Sierra 1500 AT4 trucks
for sale
near
Corinth, TX
- 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.
**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.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great service, smooth process.
Great service, smooth process. I found the vehicle I wanted at a great price. Everyone was very friendly. I will certainly consider Grand Prairie for future purchases.
This truck has a jerk when changing gears sometimes.
This truck has a jerk when changing gears sometimes. I enjoy the truck overall easy to handle and comfortable. Drive with ease sight is good when driving.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
This is an excelent dealership.
This is an excelent dealership. The Buying expserience was great and I have been treated very well. Everyone that I came in contact with said hello and wanted to know if they could help in any way. If your looking for a Jeep or Dodge I recommend that you give them a try.
Brake Pad Monitor
2021 GMC sierra 1500, 5.3, crew cab 4x4, 21000 miles. brakepad monitor lites up. dealership says needs brakes and rotors in back. one mo. on warranty. our rural roads dirty up the monitor. Needs new monitor. brakes look great to me. No noises. dealer says parts on order GM strike. Can't replace myself cause of computer...






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I really appreciate Jacob Blau at Five Star Chevrolet.
I really appreciate Jacob Blau at Five Star Chevrolet. He was a huge help in my purchase of my 2LT Corvette C8 in riptide, blue. Best, Calub
Nicest, best performing truck I've ever owned
My truck has a great appearance, inside and out. It is a pleasure to drive; and rides and performs great. It is the best truck I've ever owned.






Vehicle information
Features
Reviews
2021 GMC Sierra Denali
This is the nicest truck I have ever owned. Lots of features. Takes a while to learn what all it does but a really enjoyable vehicle.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Good service, good communication.
Good service, good communication. Enjoyed working with John and Chase. Got me in and out before I had time to finish my coffee and check my email!
Great Buy!
This truck is amazing. Turning heads all over as we tour the area. Those riding with is also enjoy the comforts and safety features. Great Buy!






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Easy process with no haggle pricing.
Easy process with no haggle pricing. The dealership had the price broken down, and did not throw in a bunch of add-ons. It made the experience much more pleasant.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Several sales personal where informative and
Several sales personal where informative and knowledgeable in customer service. I didn’t purchase a vehicle but will give Vanguard the first choice at sales.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Vary nice people, vary good at helping In explaining
Vary nice people, vary good at helping In explaining about the car,and the price. I was not able to go to get the car do to Family issues.






Vehicle information
Features
Reviews
First time customer in Dallas, Tx
For some reason Mark's name is not on the list where it says, "Choose their name," but Mark was so helpful, patient, explained the process clearly and was very professional. I highly recommend him and would work with him and his team again. I would hope for a promotion for him Hyundai. :)






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I had a great experience at Crest Nissan!
I had a great experience at Crest Nissan! From start to finish, everything went smoothly and in a timely manner. The staff was professional, friendly, and attentive, making sure all my questions were answered and that I felt comfortable throughout the entire process. It's clear they value customer satisfaction and work efficiently to get things done right. I highly recommend Crest Nissan to anyone looking for a hassle-free and positive car buying experience.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Todd is Great!!
Todd is great! He helped me all the way to buy a very nice Audi S8. Highly recommend this place, especially Todd. Thank you for making it happen.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
The salesman, Joe Rodriguez, was very helpful and
The salesman, Joe Rodriguez, was very helpful and informative. I had no problem with communication. Everything was handled very Well. Everybody there was very professional. financing was excellent And I would definitely recommend this dealership. to anybody that was looking for a vehicle. Keep up the good work






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Jacob Blau with Five Star Chevrolet gave me an amazing
Jacob Blau with Five Star Chevrolet gave me an amazing experience when delivering my Corvette two hours away. no other dealer would do that for me.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Nice sales people.
Nice sales people. Easy to work with, but would not move on the price of the car.
Vehicle information
Features
Reviews
I had a good experience at Eckert Hyundai, Chaz O'Connell
I had a good experience at Eckert Hyundai, Chaz O'Connell and Gavin Knighton were awesome to work with. They help me out without any pressure. I would go back to Eckert Hyundai in Denton again. Thank you.
Vehicle information
Features
Reviews
Very good and courteous staff.
Very good and courteous staff. Had difficulty locating my appointment but all went smoothly afterwards. Picked up my car in no time. It is always washed for me!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I have purchased cars from Sewell in the past and once
I have purchased cars from Sewell in the past and once again, their service and inventory is SUPERIOR! We are so happy with our vehicle and the overall experience!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
The best used car deal I have ever made.
The best used car deal I have ever made. First time buying with Sewell and had a great experience.
There are 20 matching cars close to your year range.






Used
2022 GMC Sierra 1500 AT4
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Used
2022 GMC Sierra 1500 AT4
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Used
2022 GMC Sierra 1500 AT4
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Used
2020 GMC Sierra 1500 AT4
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2020 GMC Sierra 1500 AT4
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GMC Certified
2023 GMC Sierra 1500 AT4
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Used
2023 GMC Sierra 1500 AT4
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Used
2023 GMC Sierra 1500 AT4
Vehicle information
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Used
2020 GMC Sierra 1500 AT4
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Used
2019 GMC Sierra 1500 AT4
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Used
2022 GMC Sierra 1500 AT4
Vehicle information
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Used
2023 GMC Sierra 1500 AT4
Vehicle information
Features

Used
2023 GMC Sierra 1500 AT4
Vehicle information
Features
Used
2019 GMC Sierra 1500 AT4
Vehicle information
Features
Used
2020 GMC Sierra 1500 AT4
Vehicle information
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Used
2022 GMC Sierra 1500 AT4
Vehicle information
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 AT4 | $67,184 |
About the 2021 GMC Sierra 1500 AT4
AT4 shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Four Wheel Drive
- Combined MPG
- 17
- Transmission
- 10-Speed A/T
- Engine
- 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)

How much does the 2021 GMC Sierra 1500 AT4 cost?
The 2021 GMC Sierra 1500 AT4 price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 1500 AT4 is $41,058, with pricing starting at $27,950.
What is the MPG of the 2021 GMC Sierra 1500 AT4?
The 2021 GMC Sierra 1500 AT4 offers up to 15 MPG in city driving and 21 MPG on the highway for a combined rating of 17 MPG.
These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle options, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2021 GMC Sierra 1500 AT4?
The 2021 GMC Sierra 1500 AT4 compares to and/or competes against the following vehicles:
Is the 2021 GMC Sierra 1500 AT4 reliable?
The 2021 GMC Sierra 1500 has an average reliability rating of 3.5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 1500 owners.
60% of drivers recommend this car
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 157" AT4 | 4WD Crew Cab 147" AT4 |
Inventory price | |
Starting at $55,900 | Starting at $54,700 |
Combined MPG | |
16 | 17 |
Engine | |
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
*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.
Used 2021 GMC Sierra 1500 AT4 by city
-
2021 GMC Sierra 1500 AT4 in Highland Village, TX
2 Great Deals out of 20 listings starting at $32,999
-
2021 GMC Sierra 1500 AT4 in Flower Mound, TX
2 Great Deals out of 20 listings starting at $32,999
-
2021 GMC Sierra 1500 AT4 in Lewisville, TX
2 Great Deals out of 20 listings starting at $32,999
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