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Used
2021 GMC Sierra 1500 trucks
for sale
near
Lantana, 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 SLT
Vehicle information
Features
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Found the perfect car for my son, and it was an easy
Found the perfect car for my son, and it was an easy buying experience. Would recommend to family and friends.
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
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
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.
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
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Excellent service!
Excellent service! Got em exactly what I wanted and quick no xx. Nick J is awesome!
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Beautiful car as pictured.
Beautiful car as pictured. Needed a number of things addressed that you could not see in pictures. Manager was very persuasive about making sure all the things that needed attention would be addressed but I was concerned that there was more than I could see in a short drive and inspection. Would need some more time to make sure that the vehicle was as advertised. Just not comfortable completing purchase Still a beautiful vehicle, was very hard to not complete purchase.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
They were ready for me at the appointed time.
They were ready for me at the appointed time. Dylan offered me the opportunity for an oil change that was due, and I took advantage of that service also. My truck looked great when the ZakTex process was complete.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
The whole experience was quite quick and everyone was
The whole experience was quite quick and everyone was friendly. The Salesperson answered all my questions and also showed me a few things I did not know about the truck. Financing agent was friendly, it did take a couple of tries for us to come to an agreement on the amount, interest, and length. Great options for warrantee coverage! I only have a very minor comment. The detailing was a little light which is not too big of a deal for me since I go through and reclean everything to my standards. I will definitely buy from here again if the opportunity arises in the future! Thank you
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great communications from my service advisor while
Great communications from my service advisor while service was being performed. Plus they a nice waiting room for customers to use while waiting on service.
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Jeremy was incredible and made the process of buying a
Jeremy was incredible and made the process of buying a new car so easy. When it’s time for a new car, he will be my go to salesman.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Chris Filline walked us through each step of the buying
Chris Filline walked us through each step of the buying process. His is very professional and honest.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Wanted to purchase another car and they had one for a
Wanted to purchase another car and they had one for a great price. They were able to get me a lower APR than I expected and my salesman John stayed till after we signed which was about an hour after closing since I got there a little before.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Very easy to get appointment.
Very easy to get appointment. My Service Advisor was great, kept advised to my vehicle. When I picked up my vehicle it was washed and clean. They did a great job for me. This is a great dealership and I would higly reccommend this dealership.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
My service advisor had such a great attitude with
My service advisor had such a great attitude with welcoming me in and smiling as he assured he would make sure my experience was going to be great. And it was thx to him. It was refreshing to have a service employee appear to love his job, or he pretending really well. Either way it was appreciated. A great attitude goes a long way!
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I had an excellent experience working with Brian at
I had an excellent experience working with Brian at Reliable Chevrolet. From start to finish, he was knowledgeable, efficient, and incredibly easy to work with. Brian clearly knows the business and handled the process with a level of professionalism and expertise that made everything smooth and straightforward. What stood out most was his ability to read the room. I came in knowing the deal I wanted and wasn’t looking to spend hours going back and forth. Brian respected that immediately—he was direct, transparent, and kept the process moving without any unnecessary back-and-forth. At the same time, he made the experience enjoyable with his sense of humor and personable approach. It’s rare to find someone who is both highly knowledgeable and genuinely great to work with, but Brian delivered a best-in-class customer experience. I would absolutely recommend anyone looking for a vehicle to connect with him at Reliable Chevrolet.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Robbie, my salesman, was outstanding!
Robbie, my salesman, was outstanding!! He made it painless and is absolutely customer focused. Pricing was ultra-competitive. Dealership was clean. We will definitely go back.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Overall review
Ruben was very polite, helpful and professional. He went above and beyond to help me. He even washed my truck before I left. He made sure that everything was taken care of before I left.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
First time customer at this dealership.
First time customer at this dealership. I was met promptly by a service advisor and after the preliminary paperwork, was shown to the customer lounge. Bright and clean with comfortable seating and refreshment options. My car was ready on time, sparkling clean inside and out. This dealership does a great job. I left impressed and satisfied. I'll be back.
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $60,151 | 5 Great deals |
| 2025 GMC Sierra 1500 | $49,757 | 26 Great deals |
| 2024 GMC Sierra 1500 | $49,219 | 12 Great deals |
| 2023 GMC Sierra 1500 | $45,718 | 44 Good deals |
| 2022 GMC Sierra 1500 | $40,955 | 18 Good deals |
| 2020 GMC Sierra 1500 | $33,548 | 10 Great deals |
| 2019 GMC Sierra 1500 | $31,430 | 15 Good deals |
| 2018 GMC Sierra 1500 | $26,869 | 15 Good deals |
| 2017 GMC Sierra 1500 | $20,949 | 4 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 $35,860, with pricing starting at $13,900.
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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GMC Sierra 1500 trims
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GMC Sierra 1500 2021 SLT
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2021 GMC Sierra 1500 by cab 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.