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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
Hilshire Village, 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.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Mr. Josue made everything smooth and pleasant. He was
Mr. Josue made everything smooth and pleasant. He was great part of our experience. Thank you Josue. We are very happy with our new truck.
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
A diamond in the rough
Great service, wonderful environment and very reasonable prices. I recommend the dealership without reservation. Staff is amazingly friendly and the facility is comfortable and offers some recreational activities such as table tennis and a small basketball game.
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
Harry made our car buying experience hassle free and was
Harry made our car buying experience hassle free and was very courteous from talking to him upon arrival to helping us through the approval process
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.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Excellent no pressure sale.
Excellent no pressure sale. We went in with an idea of what vehicle we wanted. We test drive two modules and decided on the one we liked. The purchase process was seamless and easy. Delivery was excellent
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
Great overall experience purchasing my first EV.
Great overall experience purchasing my first EV. Keith Mack was extremely knowledgeable and answered all our questions. The entire staff was friendly and made the process easy.
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
Service advisor was very helpful and when the extra mile
Service advisor was very helpful and when the extra mile to make sure job was done fast and keeped constant communication on status of vehicle.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
AJ Cleveland dealership
AJ at the dealership in Cleveland Tx went above and beyond to make my car buying a great experience. AJ found the car I was looking for.Thank you.S Lawson






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Best hassle free buying experience ever for me.
Best hassle free buying experience ever for me. Great customer service. Our salesman was respectful and very knowledgeable. Definitely will buy there again. Thank you.

Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Very easy and professional.
Very easy and professional. We bought a used car and Luc was amazing from start to finish. Car was ready to go with a big red bow and a full tank of gas.

Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Every visit, whether maintenance or repair is a great
Every visit, whether maintenance or repair is a great experience. Service techs are friendly and very knowledgeable. My only suggestion is they return a repair that takes 3 days or longer, washed and vacuumed.
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 1500 AT4 | $62,435 |
About the 2021 GMC Sierra 1500 AT4
Base shown (base trim).
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 16
- Transmission
- 6-Speed A/T
- Engine
- 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)

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 $42,104, with pricing starting at $27,750.
What is the MPG of the 2021 GMC Sierra 1500 AT4?
The 2021 GMC Sierra 1500 AT4 offers up to 18 MPG in city driving and 21 MPG on the highway for a combined rating of 19 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.
Is the 2021 GMC Sierra 1500 AT4 a good truck?
Below are the Cars.com consumer ratings for the 2021 GMC Sierra 1500.
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
60% of drivers recommend this car
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
*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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Certified cars are manufacturer warrantied and typically go through a rigorous multi-point inspection.
This car is likely to sell soon based on the price, features, and condition.
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