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Used
2021 GMC Sierra 1500 trucks
for sale
near
Deer Park, 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
Reviews
A great place to buy and get service make you
As always everyone treats me as if I am Family! Great people and great service They make the experience a good one Every time all the time.
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 AT4
Vehicle information
Features
Reviews
Thank you Michael for taking care of us
I great place with a great customer service, thank you Michael for helping me to purchase with my dream Jeep wrangler. You were amazing my friend and also my finance guy that don't remember his name, may God bless you guys.
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
Omar was great to work with.
Omar was great to work with. Felt that we got a good deal on the SUV we purchased.
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
I have been a loyal customer of Mercedes Greenway for
I have been a loyal customer of Mercedes Greenway for more than 20 years ? largely for the great customer service. Always highly recommend Mercedes to others!
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.
Certified
2021 GMC Sierra 1500 ELEVATION
Vehicle information
Reviews
Ford Bronco Sport- Wow
Friendly, efficient, got me a great interest rate. Car of my dreams was sitting on the lot! Took a test drive. Signed papers out with my keys in 2 hours.
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
Ask for Mikaila
I highly recommend Mikaila Morris. What a great experience. Thank You Mikaila. Can't wait till end of July when I can buy my new car from you.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
They are very professional and caring about the needs of
They are very professional and caring about the needs of the customer. They do a great job of following up on inquiries.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Una experiencia inolvidable, proceso rápido y muy buen
Una experiencia inolvidable, proceso rápido y muy buen servicio. Estoy muy contento con mi carro! 🥳
Certified
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Once we came together on my needs it was pleasant.
Once we came together on my needs it was pleasant. Sales manager and sales person were good to me after we got some details hammered out
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
My salesmen Joel Perez was very knowledgeable and
My salesmen Joel Perez was very knowledgeable and helpful. Your lot clean and easy to the car I wanted. The financing was also easy and quick.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Joseph Malbrough Was great whole process was easy.
Joseph Malbrough Was great whole process was easy. He answered every question I had perfectly
Certified
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Outstanding Experience with Amir at Helfman Ford!
Outstanding Experience with Amir at Helfman Ford! I recently purchased a 2024 Ford Expedition Max from Helfman Ford, and I have to give a huge shoutout to Amir for making the entire process seamless and enjoyable. From the moment I walked in, Amir was professional, knowledgeable, and genuinely invested in helping me find the right vehicle. He took the time to answer every question with clarity, and never once made me feel rushed or pressured. His attention to detail and commitment to customer satisfaction were truly impressive. What really stood out was Amir’s ability to make the experience feel personal. He listened to what I needed, offered thoughtful recommendations, and made sure I was comfortable every step of the way. The Expedition Max is an incredible vehicle, and Amir made sure I drove off the lot feeling confident and excited. If you're in the market for a new Ford, I highly recommend asking for Amir at Helfman Ford. You won’t just get a great car—you’ll get top-tier service from someone who genuinely cares.
Vehicle information
Features
Reviews
We had an amazing experience buying our truck thanks to
We had an amazing experience buying our truck thanks to Gelmer . He was super helpful and easy to work with . It was a smooth & stress free process. I highly recommend him when buying a vehicle.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I went in to get my car serviced and this particular
I went in to get my car serviced and this particular dealership Very Professional & proficient. this will be the only place I will be taking my car from now on.
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Awesome.
Awesome. Efrain was a joy. Matt was Very hospitable. Really good team. We will be back for future GMCs and who knows maybe a new truck!
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Gil always makes it so easy to schedule an oil change.
Gil always makes it so easy to schedule an oil change. Answers all of our questions on a timely manner. Our overall experience is always a pleasant one.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
In regardsto fixing a blown fuse on my 2024 sierra 2500.
In regardsto fixing a blown fuse on my 2024 sierra 2500. Diagnosis for $250 was applied to the bill for fixing the item which was basically a wash as the labort to remove a few exposed nuts on top of the battery cost about the same. But the repair allows me to keep my factory warranty, and for $600 after a generous $50 discount, I will sleep well knowing GM had my back.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I had a great experience at GMC Southwest on purchasing
I had a great experience at GMC Southwest on purchasing my new car. From start to finish, the process was smooth and stress-free. The salesperson Jonathan was extremely helpful, patient, and knowledgeable, taking the time to answer all my questions and make sure I felt comfortable with my decision. I truly appreciated the honesty and professionalism throughout the entire process. I am very happy with my purchase and would highly recommend this dealership and salesperson to anyone looking to buy a new car.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Professional and polite was greeted upfront from the
Professional and polite was greeted upfront from the beginning. Work was done quick. Great job
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $59,654 | |
| 2025 GMC Sierra 1500 | $59,678 | 3 Good deals |
| 2024 GMC Sierra 1500 | $47,870 | 10 Great deals |
| 2023 GMC Sierra 1500 | $47,213 | 10 Good deals |
| 2022 GMC Sierra 1500 | $41,598 | 13 Good deals |
| 2020 GMC Sierra 1500 | $30,384 | 9 Good deals |
| 2019 GMC Sierra 1500 | $32,436 | 4 Good deals |
| 2018 GMC Sierra 1500 | $25,672 | 7 Good deals |
| 2017 GMC Sierra 1500 | $23,780 | 6 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 $35,950, with pricing starting at $14,980.
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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Research the 2021 GMC Sierra 1500
Compare the 2021 GMC Sierra 1500
2021 GMC Sierra 1500 by city
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2021 GMC Sierra 1500 in Pasadena, TX
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13 Great Deals out of 53 listings starting at $22,933
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6 Great Deals out of 26 listings starting at $24,199
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2021 GMC Sierra 1500 in Cloverleaf, TX
13 Great Deals out of 51 listings starting at $22,933
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2021 GMC Sierra 1500 in Galena Park, TX
13 Great Deals out of 53 listings starting at $22,933
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2021 GMC Sierra 1500 in Taylor Lake Village, TX
6 Great Deals out of 26 listings starting at $24,199
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2021 GMC Sierra 1500 in El Lago, TX
6 Great Deals out of 24 listings starting at $24,199
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2021 GMC Sierra 1500 in Highlands, TX
8 Great Deals out of 33 listings starting at $24,199
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2021 GMC Sierra 1500 by body style
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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.
