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Used
2021 GMC Sierra 1500 trucks
for sale
near
Cockrell Hill, 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.
Certified
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
My experience at Autonation FORD was absolutely
My experience at Autonation FORD was absolutely wonderful, all thanks to Hillard ?Jay? Jones. From the warm check-in to a clear, no-surprise estimate, every part of the process was done with professionalism and genuine care. The use of authentic parts and prompt service kept my car looking spotless, and I appreciated the helpful summary after the service. The cozy lounge and Jay?s courteous follow-up made me feel truly appreciated. They treat their customers like family, and I highly recommend them!
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
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.
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 SLT
Vehicle information
Features
Reviews
Very professional and friendly.
Very professional and friendly. Car was waiting for me when I arrived. They went out of their way to help me with my leased truck. I would recommend their dealership to anyone,
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
I bought a new F250.
I bought a new F250. I told them exactly what I wanted and they made it happen. No pressure to look or buy anything else. Salesman Raul was awesome too. He definitely worked hard to make it happen.
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
I had an excellent experience purchasing my new truck,
I had an excellent experience purchasing my new truck, and a huge part of that was thanks to my salesperson, Pedro. From start to finish, Pedro was professional, knowledgeable, and genuinely focused on making sure I was comfortable and confident with my purchase. He took the time to answer all my questions, was transparent throughout the process, and never made me feel pressured. The entire experience was smooth, stress-free, and actually enjoyable—something you don’t always hear when it comes to buying a vehicle. If you’re in the market for a new truck and want someone who truly cares about customer service, ask for Pedro. I highly recommend this dealership and would absolutely come back again.
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
Fantastic experience at International Auto Sales in
Fantastic experience at International Auto Sales in Garland, TX! From start to finish, the team was professional, honest, and incredibly helpful. The GM and Finance Manager made the entire car-buying process smooth and stress-free. Selection was top-notch, and the pricing was fair and transparent. I felt valued as a customer and never pressured. If you're looking for quality cars and five-star service, this is the place to go. Highly recommended!
Used
2021 GMC Sierra 1500 Denali
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.
Vehicle information
Features
Reviews
Fast, Friendly, and Helpful
I saw a 2014 Silverado LTZ that had all the features I had been looking for. I set my mind to drive up and look at the truck (I opted not to transfer as I had family in the area I intended to visit). The hold process is GREAT. It's a quick click and I knew the vehicle was going to be there after I drove the 3 hours to look at it. I worked with Chris Biggs and he was great. We talked options on the truck and for financing (they beat my credit union's offer). He was incredibly friendly to be around and my wife and I thoroughly enjoyed talking to him as we waited on our financing offers. He was thorough in making sure we had all the facts and options. If I had anyone in the area looking to buy, I would send them to Chris in a heartbeat. Then I know they'd have a good experience and be completely taken care of.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Great Experience – Honest, Professional, and Smooth
Great Experience – Honest, Professional, and Smooth Process” I bought my car at Precision Autos and had an amazing experience. Karen helped me from start to finish and was incredibly transparent, kind, and professional the whole time. She explained everything clearly, answered all my questions, and made the entire process smooth and stress-free. The car I got is used but in excellent condition, I got extended warranty that I can use with them or any certified facility which it gave me peace of mind. If you’re looking for a reliable used car and great customer service, I highly recommend Precision Autos. Ask for Karen — she’s the best!
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Vehicle information
Features
Reviews
This place is fantastic!
This place is fantastic! I'm lucky to work with Tommy on trades. He's professional, caring, knowledgeable, and honest. I have complete confidence that he prioritizes the business's and customers' best interests. I'm grateful for his expertise and highly recommend him. If you need assistance, be sure to ask for Tommy.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
The transaction was smooth and the salesman was great.
The transaction was smooth and the salesman was great...very informative and truthful...overall a good experience, will go back if we want something else
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I look forward to buying here again
We were pressed for time & needed a good, reliable truck. Our young son was leaving for Illinois in a few days. We almost literally ran into Kevin on his way out of the gate-Lol! He stayed a little late & showed us a great F150 trade-in he had just gotten & made a great deal out of it for us. He had it detailed, inspected & mechanically checked out for Josh to get on his way. I believe Kevin was sincerely invested in our son’s well-being for this road trip. Of course, Josh made it without a hitch! Thanks again, Kevin & God’s blessings on you, your family & your great business! 👍🏻
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
My husband and I put off looking for a new car for a very
My husband and I put off looking for a new car for a very long time. We finally decided we would replace the car that we currently had with a newer model. We ended up with a 2024 Chrysler Town & Country that looks and drives brand new. Our salesman was Guillermo Villanueva and the manager was Juan Tapia. They didn’t pressure us. It was the easiest big purchase buy that we have ever made. These guys are 100% professional and 100% pleasant. We will definitely work with them again on our next car buy. Big thanks to Guillermo, Juan, and the folks at Classic Chevrolet in Grapevine! C & M Wilk
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I had an excellent experience working with Raul and
I had an excellent experience working with Raul and Brian. Customer service was truly 10/10 from start to finish. They were transparent throughout the entire process, communicated clearly, and made sure I understood every detail. Timeliness was also outstanding — everything moved efficiently without feeling rushed. What I appreciated most was that they met me where I was in the buying process. There was no pressure, just straightforward, honest communication and a willingness to work with me to find the right solution. I would gladly give them my business again and highly recommend working with Raul and Brian
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Excellent experience at Dallas Lease Returns.
Excellent experience at Dallas Lease Returns. Chris Mikell was great to work with. The entire process was quick and with none of the stress or pressure that often accompanies car buying. I would definitely buy from this dealer again!
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
It was outstanding!
It was outstanding! Art was super easy to work with and I was in and out of there (with the car and a great deal) in the fastest time ever!
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
The buying process was pretty good the make ready part
The buying process was pretty good the make ready part needed some work, we had to wait way to long
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Jaime was very helpful with the buying process along with
Jaime was very helpful with the buying process along with others that assisted us. Thank you so much for helping us with a smooth and quick process.
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $57,985 | 3 Good deals |
| 2025 GMC Sierra 1500 | $48,189 | 29 Great deals |
| 2024 GMC Sierra 1500 | $46,078 | 18 Great deals |
| 2023 GMC Sierra 1500 | $46,572 | 5 Great deals |
| 2022 GMC Sierra 1500 | $40,306 | 8 Great deals |
| 2020 GMC Sierra 1500 | $34,396 | 6 Great deals |
| 2019 GMC Sierra 1500 | $30,233 | 12 Good deals |
| 2018 GMC Sierra 1500 | $25,178 | 10 Good deals |
| 2017 GMC Sierra 1500 | $23,084 | 11 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 $35,680, with pricing starting at $14,400.
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.
