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Used
2021 GMC Sierra 1500 trucks
for sale
near
Highlands, 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 dealership!
Top Notch all the way. Sales and service treat you right. Definitely worth the drive from wherever you live to see these guys next time you need a new car or service.
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 SLT
Vehicle information
Features
Reviews
The process of buying my truck was very smooth and quick.
The process of buying my truck was very smooth and quick. Great service from the staff and service manager. I highly recommend them to my family and friends
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 cannot recommend this location enough after the
I cannot recommend this location enough after the excellent service and very good experience I had with my first time financing a vehicle. Cesar Rodriguez and Raul Silva both worked with me to find a vehicle that suited my needs within my price range. These gentleman were extremely patient and professional when handling the sale. I would also like to thank Mark and Brandon in financial services. They both persisted through technical difficulties in order to deliver excellent customer service all the way to the end. I would absolutely recommend this location if you’re in the market for a used vehicle and I will be returning in the future!
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
I had a great time and experience at this ford dealer
I had a great time and experience at this ford dealer sold me on a amazing car and would recommend this dealership
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 SLT
Vehicle information
Features
Reviews
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 Elevation
Vehicle information
Features






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Everything went well.
Everything went well. I guess if I have to write 25 words I can go on and on about nothing. These reviews are not true reviews if you or the survey company are setting the boundaries.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I normally try to bring my Chevy vehicles here.
I normally try to bring my Chevy vehicles here. I like their customer service and I trust there workmanship. Up front and hassle free. No B.S whatsoever.






Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
It's where I go for a quick no hassle oil change and tire
It's where I go for a quick no hassle oil change and tire rotation. It's all I needed and all I got. It was great!






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Online shopping
Found the perfect used Grand Cherokee at River Oaks on online listings. As soon as I inquired, they were responsive and made sure that I was able to get the car. Straight talk, courteous and fair.






Vehicle information
Features
Reviews
Best car buying experience ever.
Best car buying experience ever. No haggle saves alot of YOUR time. Narrow you choices down, test drive, and do some paperwork. In an out in less than 2.5 hours.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
AWESOME CAR BUYING EXPERIENCE!
Awesome car buying experience with no run around ! Very straight forward easy experience. They do not pressure you or give you the run around at all. The customer service is beyond FANTASTIC! My salesman Mike was truly helpful & prompt on the the whole deal. Will definitely be referring family and friends & continue buying from CarMax (especially this particular location) !






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Loved it nice clean cars very happy with my purchase and
Loved it nice clean cars very happy with my purchase and car it’s beautiful






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features






GMC Certified
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
We purchased a new Yukon XL from Beck and Masten South.
We purchased a new Yukon XL from Beck and Masten South. Everyone we worked with at the dealer was helpful. Robert and Fernando were great salesman to work with and made the buying process smooth.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
First oil change.
I had a real good experience at Central Houston Cadillac. Kevin our Service Writer made everything a pleasant visit for my first oil change on my wife’s car. I went to the customer service waiting area and got a cup of coffee. Well, the cup of coffee was great. I had to wait for the coffee to cool down because it was extremely super hot. I had to use a second cup because I couldn’t hold the single cup of coffee, could have used a third cup. Finally when it did cooldown and was able to take a few sips, Kevin came in and said my car ready. It had been about an hour or so after I got there. I told him, that it was a quick service. Lol. I signed my receipt and was on my way back home. I just want to thank Kevin for a good pleasant service. But I didn’t get my free complimentary car washed, because it was raining the day I came in. Walter, my car salesman when I bought the car in January 2023, promised me we could get our car washed anytime, all I had to do was to drive in anytime and have the car washed. So, I’ll be in to have it washed sometime soon. Thanks.

Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Alex is great and he helped me through the process to get
Alex is great and he helped me through the process to get my truck fixed.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I recently purchased a used veh.
I recently purchased a used veh. from DeMontrond, and when I tell you! Super professional, and helpfull. These ladies and gentelmen have it together. Awesome below market pricees. And the forever warranty!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
GREAT SALES SERVICE
Bryon C. was amazing! We walked into the dealership looking for a Jeep that just happened to be sold the previous day. Bryon took the time to search all other dealerships to find one identical to the one we wanted. He was so helpful and had a great deal of patience with us during this entire process. Bryon continues to still answer our questions when we e-mail or call him. We have sent at least one other person to work with Bryon and we will definitely be sending more! We HIGHLY recommend Bryon C.! Thank you!
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $43,129 | |
2025 GMC Sierra 1500 | $32,595 | 1 Good deal |
2024 GMC Sierra 1500 | $37,492 | 13 Good deals |
2023 GMC Sierra 1500 | $34,900 | 14 Good deals |
2022 GMC Sierra 1500 | $28,000 | 3 Good deals |
2020 GMC Sierra 1500 | $18,391 | 12 Good deals |
2017 GMC Sierra 1500 | $18,199 | 3 Good 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 $38,872, with pricing starting at $15,480.
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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Compare the 2021 GMC Sierra 1500
2021 GMC Sierra 1500 by city
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2021 GMC Sierra 1500 in Highlands, TX
1 Great Deal out of 23 listings starting at $27,950
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1 Great Deal out of 20 listings starting at $29,999
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4 Great Deals out of 32 listings starting at $27,950
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3 Great Deals out of 26 listings starting at $27,950
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4 Great Deals out of 35 listings starting at $27,950
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4 Great Deals out of 34 listings starting at $27,950
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2021 GMC Sierra 1500 by body style
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