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Used
2021 GMC Sierra 1500 trucks
for sale
near
Mission Bend, 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
My service advisor was very helpful and easy to deal
My service advisor was very helpful and easy to deal with. The whole process was smooth and painless and they kept me informed throughout the process.
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
My experience was really great.
My experience was really great. Chris was really helpful he made sure we were taken care of the whole time , I will recommend him to my family & friends. Also I will be back 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.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great staff.
Great staff. Great experience. Loved the vehicle selection and quality. They took great care of my family.
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
Had a great experience there would definitely recommend
Had a great experience there would definitely recommend to anybody looking to buy a new car serviced was quick and fast and they helped me with everything I needed help with
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
Una experiencia inolvidable, proceso rápido y muy buen
Una experiencia inolvidable, proceso rápido y muy buen servicio. Estoy muy contento con mi carro! 🥳
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Dulce is amazing highly recommend her.
Dulce is amazing highly recommend her. She is very professional and easy to work with.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Jessica was an amazing super friendly, nice responsive
Jessica was an amazing super friendly, nice responsive best Service tech I?ve ever experienced. Would highly recommend come to you for service again. So nice and friendly.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Had my vehicle repaired and my service advisor Syquoia
Had my vehicle repaired and my service advisor Syquoia was very friendly and professional I have been going to her for years and it?s a great experience every time!
Used
2021 GMC Sierra 1500 Base
Vehicle information
Features
Reviews
Getting a car at Autonation Katy was a breeze.
Getting a car at Autonation Katy was a breeze. Justin Hernandez actually introduced a better car for better value than the one we were originally looking at, was very knowledgeable and answered every question patiently. Great guy to work with!
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Jesus is very knowledgeable, professional and he keeps me
Jesus is very knowledgeable, professional and he keeps me updated on the progress of my service. He's a great representative for your dealership. Keep up the great work!!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Very friendly and professional staff, the salesman,
Very friendly and professional staff, the salesman, Roman, did his best to get me the best deal. As this was my first EV, he took the time to explain the cars operation and features.great support in the after sales too with software updates.
Certified
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Easy and seamless car buying experience.
Easy and seamless car buying experience. We told Jonathan that we did not want to be in the dealership all day and that I have had bad experiences in the past. This was the quickest easiest car buying experience and everyone was very kind during the process. Would recommend asking for Jonathan.
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Thank you, Fabiola for your help I recently bought, 2006
Thank you, Fabiola for your help I recently bought, 2006 C6 Corvette, LOVE IT Recommend, America's Auto Financial whoever is looking for a vehicle, the service was great,
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Terard made my experience very easy.
Terard made my experience very easy. I am so glad he was our salesman. From the moment I walked in, Terard was welcoming, patient, and focused on helping me find the right vehicle. He listened to what I needed, and answered every question I had. Terard was professional and honest. He explained all the features, pricing, and options in a way that was easy to understand. No pressure. He went above and beyond to make sure I was comfortable with my choice. If you're looking for someone trustworthy and knowledgeable, I highly recommend Tarard, he is a good person! I wish him the best in life.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Autonation Ram Katy has been my to go service dept for a
Autonation Ram Katy has been my to go service dept for a few years now. I enjoy the communication, professionalism and level of work they do.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Young man taking care of my vehicle service has been
Young man taking care of my vehicle service has been solid. Keeps in contact throughout the process. Not all service reps are like Christian Arrellano. Great kid.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great experience as always.
Great experience as always. Both Robert wolf and John Ivanic were great. From the time we walked in to the time we drove off with the new car, we were very happy.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
we dind have a book appointment for the service and the
we dind have a book appointment for the service and the guy who helps us was really nice faster the process as we had our daughters with us
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $60,207 | 2 Good deals |
| 2025 GMC Sierra 1500 | $55,853 | 8 Great deals |
| 2024 GMC Sierra 1500 | $47,948 | 5 Great deals |
| 2023 GMC Sierra 1500 | $48,262 | 6 Good deals |
| 2022 GMC Sierra 1500 | $43,309 | 9 Good deals |
| 2020 GMC Sierra 1500 | $30,495 | 17 Good deals |
| 2019 GMC Sierra 1500 | $29,841 | 5 Good deals |
| 2018 GMC Sierra 1500 | $23,717 | 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 $35,789, with pricing starting at $14,800.
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.
