Save your search and get notified when new inventory arrives.
Contact seller
Customize your budget
*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.
About your privacy: Cars.com is asking for your ZIP and credit rating because it helps us to make an educated guess at your sales tax and loan interest. These two factors can greatly change your monthly payment.
Used
2021 GMC Sierra 1500 trucks
for sale
near
Double Oak, 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 Denali
Vehicle information
Features
Used
2021 GMC Sierra 1500 AT4
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Stephen Underwood was my service advisor and he was
Stephen Underwood was my service advisor and he was great! He checked with me before performing anything extra on my car which I appreciated. Very professional
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 SLT
Vehicle information
Features
Reviews
Great experience!
Great experience! Robert McMillan was a wonderful service advisor. Had my car back in about 40 minutes!
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
Erik, was my sales consultant.
Erik, was my sales consultant. They worked with me and got the price I wanted, helping me out. I traveled from over 140 miles one way to purchase vehicle. I would travel again to do it!!!! Also I don't want to forget Derek a director at Clay C. it was late when I arrived they where still glad to see me. Worked with me past business hours. These Guys were 👍 great to me..
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 SLT
Vehicle information
Features
Reviews
Kadin was our salesman and he was so pleasant to work
Kadin was our salesman and he was so pleasant to work with! Great experience! He wasn’t pushy but very patient and so kind. Highly recommend Hiley!!! From the first step on the lot to driving our new Sante Fe home - we were impressed with every part of it!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Blessed by 5 Star Ford Lewisville tx
Hello 5Star Ford In Lewisville tx is great!! They greet you at the door with a smile!! Ready to help you!! Shout out to Tom and Ken yall number one!! I love my truck!! Y'all got busy and didn't stop until I was riding off in my new truck!! Thanks so very much!! I would send anyone y'all way!! Y'all are the best!! And thanks so very much I appreciate y'all!!!! 😊 what a clean peaceful place to shop at!!! If you need a car shop with them it's well worth every minute!! ✅
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Thank you Robert and Don for your professionalism in
Thank you Robert and Don for your professionalism in attending to my car services I appreciate your attention to my car?s needs Exceptional customer service
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
DeMeon Washington & Steve Williams were both friendly &
DeMeon Washington & Steve Williams were both friendly & professional. Process was easy & efficient, was prequalified online, in person interaction was great. Overall process was excellent we’re very pleased with this process, customer service and vehicle options. Highly recommend!
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Loved my whole experience at CARMAX, Fort Worth!
My brother-in-law recommended that I check out car max when needing to purchase a good used car. First I went on line to see what cars were available. I found exactly what I wanted, in my budget, at the Plano location. Luis Delatorre, my fabulous agent, at the Fort Worth, River Ranch Blvd., had the car transported to Fort Worth and I purchased it on sight! I Drove it around the block, and had all the paperwork efficiently delivered to me within 30 minutes! I've found my future dealership and will recommend Car Max to anyone who will listen to me!
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Best sales man Mr.
Best sales man Mr. Rawland Long was very dedicated, showed us many cars until we found the one . 100% will recommend to friends and family to come to him THANK YOU!
Vehicle information
Features
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Wonderful experience!
Wonderful experience! Our salesman Ricardo Magana was knowledgeable and easy to work with. He made sure everything was working on our car before we left the dealership. It’s our daughter’s first car and we feel she has a good reliable vehicle.
Vehicle information
Features
Reviews
Great Customer Service
Our sales person Samuel was accommodating, helpful, made sure we knew all of our options, and made the process so much easier. Sheryl in the back office where I signed all of the new owner paperwork and forms made it so much fun! Great staff. I came there to get a used car because my husband had such a great experience there last year getting his car.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Omar was great!
Omar was great! Easy to work with, very knowledgeable, up front and honest. Would recommend Omar.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Trae was outstanding in his customer service.
Trae was outstanding in his customer service. He listened to what we needed as well as wanted in a car and delivered. He made the buying experience one that normally is a stressful time into a relaxing one.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Truck battery weak, got new battery, truck stopped
Truck battery weak, got new battery, truck stopped afterwards, towed back to shop. Further checked, alternator tapped out, new alternator replaced and installed and repaired.
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
Their service department is simply first class, Trou Dunn
Their service department is simply first class, Trou Dunn was service consultant and he did a remarkable job getting our rather unusual problem with out Infinit solved.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Very Helpful
Went to this Carmax off of an advertised vehicle. Vehcile was as advertised with no hidden charges or add-ons. We wanted to look at others and the salesperson walked us through all available vehicles. We ended up wanting to see one at another Carmax They set up arrangeents and we went to the other Carmax and purchased that vehicle. Both dealerships were very helpful and courteous. Price was better than other dealerships and there was no haggling. Actually a very easy buying process. I have not found a better price at ay other dealership in the area.
Vehicle information
Features
Reviews
Zevar will make the process so easy
Two experiences selling a car here in the last few years and got a quick, VERY fair price for our used cars. Ask for Zevar. He is super fast, professional and personable. You won’t regret it.
GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $60,362 | |
| 2025 GMC Sierra 1500 | $55,590 | 12 Great deals |
| 2024 GMC Sierra 1500 | $51,401 | 19 Great deals |
| 2023 GMC Sierra 1500 | $47,812 | 16 Great deals |
| 2022 GMC Sierra 1500 | $42,821 | 10 Great deals |
| 2020 GMC Sierra 1500 | $35,734 | 5 Great deals |
| 2019 GMC Sierra 1500 | $32,101 | 5 Great deals |
About the 2021 GMC Sierra 1500
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 cost?
The 2021 GMC Sierra 1500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 1500 is $37,657, with pricing starting at $13,999.
What is the MPG of the 2021 GMC Sierra 1500?
The 2021 GMC Sierra 1500 offers up to 14 MPG in city driving and 19 MPG on the highway for a combined rating of 16 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 trim, driving conditions, driving habits, vehicle maintenance, and other factors.
Is the 2021 GMC Sierra 1500 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 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
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) |
Base (7 styles)
| Style | ||||||
|---|---|---|---|---|---|---|
| 4WD Double Cab 147" | 2WD Double Cab 147" | 2WD Crew Cab 147" | 4WD Crew Cab 147" | 4WD Crew Cab 157" | 4WD Reg Cab 140" | 2WD Reg Cab 140" |
| Inventory price | ||||||
| Starting at $37,300 | Starting at $34,000 | Starting at $36,400 | Starting at $39,700 | Starting at $40,000 | Starting at $34,700 | Starting at $30,100 |
| Combined MPG | ||||||
| 19 | 21 | 21 | 19 | 19 | 16 | 16 |
| Engine | ||||||
| 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) |
Denali (3 styles)
| Style | ||
|---|---|---|
| 2WD Crew Cab 147" Denali | 4WD Crew Cab 147" Denali | 4WD Crew Cab 157" Denali |
| Inventory price | ||
| Starting at $55,800 | Starting at $59,300 | Starting at $59,600 |
| Combined MPG | ||
| 17 | 18 | 18 |
| Engine | ||
| 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
Elevation (7 styles)
| Style | ||||||
|---|---|---|---|---|---|---|
| 4WD Double Cab 147" Elevation w/3VL | 4WD Crew Cab 147" Elevation w/3VL | 4WD Crew Cab 157" Elevation | 2WD Double Cab 147" Elevation | 4WD Double Cab 147" Elevation w/3SB | 4WD Crew Cab 147" Elevation w/3SB | 2WD Crew Cab 147" Elevation |
| Inventory price | ||||||
| Starting at $44,600 | Starting at $47,200 | Starting at $49,300 | Starting at $43,100 | Starting at $46,400 | Starting at $49,000 | Starting at $45,700 |
| Combined MPG | ||||||
| 19 | 19 | 19 | 21 | 19 | 19 | 21 |
| Engine | ||||||
| 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) |
SLE (5 styles)
| Style | ||||
|---|---|---|---|---|
| 4WD Crew Cab 147" SLE | 4WD Crew Cab 157" SLE | 2WD Double Cab 147" SLE | 2WD Crew Cab 147" SLE | 4WD Double Cab 147" SLE |
| Inventory price | ||||
| Starting at $47,100 | Starting at $47,400 | Starting at $41,400 | Starting at $43,800 | Starting at $44,700 |
| Combined MPG | ||||
| 19 | 19 | 21 | 21 | 19 |
| Engine | ||||
| 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) |
SLT (3 styles)
| Style | ||
|---|---|---|
| 4WD Crew Cab 147" SLT | 2WD Crew Cab 147" SLT | 4WD Crew Cab 157" SLT |
| Inventory price | ||
| Starting at $50,800 | Starting at $47,500 | Starting at $51,100 |
| Combined MPG | ||
| 18 | 17 | 18 |
| Engine | ||
| 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 355.0-hp, 5.3-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.
Research the 2021 GMC Sierra 1500
Compare the 2021 GMC Sierra 1500
2021 GMC Sierra 1500 Trucks by city
-
2021 GMC Sierra 1500 Trucks in Flower Mound, TX
8 Great Deals out of 49 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Lantana, TX
8 Great Deals out of 51 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Copper Canyon, TX
8 Great Deals out of 52 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Bartonville, TX
8 Great Deals out of 49 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Highland Village, TX
8 Great Deals out of 49 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Argyle, TX
6 Great Deals out of 41 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Hickory Creek, TX
7 Great Deals out of 43 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Corinth, TX
6 Great Deals out of 39 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Trophy Club, TX
9 Great Deals out of 54 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Lake Dallas, TX
6 Great Deals out of 39 listings starting at $26,999
-
2021 GMC Sierra 1500 Trucks in Roanoke, TX
9 Great Deals out of 52 listings starting at $27,900
-
2021 GMC Sierra 1500 Trucks in Lewisville, TX
9 Great Deals out of 51 listings starting at $26,999
GMC Sierra 1500 trims
-
GMC Sierra 1500 2021 AT4
4 Great Deals out of 21 listings starting at $30,281
- ${price_badge()}
- ${ami_badge()}
- ${battery_badge()}${ev_report_link()}
- ${hot_car_badge()}
- ${award_badge()}
- ${cpo_badge()}
${price_badge_description}
${ami_badge_description}
The EV Battery Rating is based on this vehicle's current expected range relative to the vehicles expected range when new. ${battery_badge_text}
This vehicle is certified pre-owned, backed by a manufacturer warranty, and typically undergoes a rigorous multi-point inspection to ensure quality and reliability.
This vehicle is currently in high demand given its competitive price, desirable features, and overall condition, and may have a higher chance of selling quickly.
