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Used
2021 GMC Sierra 1500 trucks
for sale
near
McKinney, 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
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Good experience in dealing with Kerron at dallas lease
Good experience in dealing with Kerron at dallas lease returns, would Definitely buy another vehicle from him !
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 Elevation
Vehicle information
Features
Reviews
Same old car dealer tricks
Update, I was quickly contacted by the GM who promised to make good on the car by either getting rid of the smell or take the car back.
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 Elevation
Vehicle information
Features
Reviews
Great Service!!!!!
I truly enjoyed my shopping experience yesterday on Friday. October 2, 2015. Mia was very patient, professional, and caring in listening to my needs and concerns. With God's and Mia's help I was able to purchase a 2015 Ford Focus. Thank you again Mia for being an excellent salesperson. I will definitely recommend CarMax to my friends.
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 Denali
Vehicle information
Features
Reviews
Traded my Sequoia had the best experience with Cristian
Traded my Sequoia had the best experience with Cristian will do business again in the future
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
It was great to work with Alfonso and Colby overall
It was great to work with Alfonso and Colby overall everything was great good team
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Purchased my car at another Kia location, however, I do
Purchased my car at another Kia location, however, I do my maintenance here because of the outstanding customer service received from Mario Aguirre.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Ask for Herbert!
Ask for Herbert! He is the best! He is very friendly, knowledgeable, and personable. He made trading and purchasing much easier! I would buy from Autonation again for sure!
Used
2021 GMC Sierra 1500 SLE
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
Purchased a 2025 Honda Pilot.
Purchased a 2025 Honda Pilot. Saul was my salesperson and did an excellent job of going through the Car Leasing process. Great Car and a Great sales experience.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
We purchased the car we wanted for what we thought was a
We purchased the car we wanted for what we thought was a very fair price for both us and the dealership. LaVaugh Andrews and Frankie Espinosa were excellent to work with.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Bought 2 Cars Here, Now Going Back
Bought a car here. After several years I traded it in and bought another. Values were fair on my trade-ins. Vehicles on the website are really the ones they have on the lot. No pressure, no negotiating, huge selection. Paperwork process like normal. I did have to refinance after I left there because the interest rates were steep and I got better deal from credit union. Overall recommend. Had a car accident, will return to Carmax.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Mike Scholz was very helpful as I was looking for a used
Mike Scholz was very helpful as I was looking for a used Mazda Miata RF.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
A very pleasant and help full service writer.
A very pleasant and help full service writer. They provided necessary repairs in a professional manner. I have been using McKinney Buick since purchase five years ago. I am very satisfied.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Vehicle information
Features
Reviews
Happy with the deal on my purchase and great service at
Happy with the deal on my purchase and great service at the service side as well.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Steve was phenomenal to work with, and was very
Steve was phenomenal to work with, and was very knowledgeable on what I bought. I would definitely buy from here again!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Phillip used king ranch
They will try and make it right, kith drake went out on a limb to change the Triton warranty to the correct 1, 5 star still gets 5 stars
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Nathan always gets us in and out with great service!
Nathan always gets us in and out with great service! Quick oil change, tire rotation, and air filter were done. This is the only place to go!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I was in and out what seem like an hour to hour and a
I was in and out what seem like an hour to hour and a half at most and no haggle pricing and with great discounts.
GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $58,283 | 1 Good deal |
| 2025 GMC Sierra 1500 | $51,388 | 20 Great deals |
| 2024 GMC Sierra 1500 | $54,407 | 7 Great deals |
| 2023 GMC Sierra 1500 | $43,327 | 8 Great deals |
| 2022 GMC Sierra 1500 | $41,930 | 9 Great deals |
| 2020 GMC Sierra 1500 | $33,580 | 9 Great deals |
| 2019 GMC Sierra 1500 | $31,606 | 15 Good deals |
| 2018 GMC Sierra 1500 | $23,545 | 6 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 $35,760, with pricing starting at $15,200.
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.
What are some similar vehicles and competitors of the 2021 GMC Sierra 1500?
The 2021 GMC Sierra 1500 compares to and/or competes against the following vehicles:
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.
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2021 GMC Sierra 1500 by body style
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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.
