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Used
2021 GMC Sierra 1500 trucks
for sale
near
La Porte, 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
Great experience!
I received excellent service from everyone who helped with my car purchase. Everyone worked hard to make sure that I was satisfied with my purchase, and I really appreciate the patience and helpfulness that I was shown.
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.
Vehicle information
Features
Reviews
Amazing experience!
Amazing experience! Steven Verizzi was wonderful to work with. This is the third time we bought a vehicle from Emmons Autoplex, second time that we worked with Steven Verizzi and we couldn’t be happier, he is absolutely amazing! And their coffee machine is great too.
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 Denali
Vehicle information
Features
Reviews
Used 🚙
First experience working with Big Star Chrysler we’ve always gone through Big Star Honda. From the moment we entered it was like we found our second home dealership wise! Manny was our salesman and went above and beyond to take care of us. Though it was a used car Manny made sure this vehicle was worked on and like brand new before we drove off with our Sequoia. Big thank you to Manny! I wouldn’t trust anyone else!
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 Denali
Vehicle information
Features
Reviews
Great selection of used luxury cars.
Great selection of used luxury cars. They have everything from Mercedes to aston martins. Will definitely be back
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
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
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
I walked in and Daniel helped me look and find a vehicle
I walked in and Daniel helped me look and find a vehicle I liked. He let me know when the one I wanted to test drive was ready. Went back and drove it. Paperwork was as usual lots to sign, they made it seamless. I brought my Traverse home. Haven't used their service yet. Will definitely come back!
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
Certified
2021 GMC Sierra 1500 SLT
Vehicle information
Reviews
Stacy Birmingham
We wouldn't go any where else. you guys are the best.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Great great great great great great great great gr
Great professional customer service during my oil change, back light fixtures and windshield wipers/I would recommend this dealership to all of my family and friends
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Ozzie was great to work with and made my car buying
Ozzie was great to work with and made my car buying experience pleasant and easy. He's very professional, knowledgeable and helpful. I will definitely do business with him and EchoPark in the future.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Nestor did a great work helping us with the purchase
Nestor did a great work helping us with the purchase process; without his help it would not have happened.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Had a very good experience today and the service was fast
Had a very good experience today and the service was fast as well. The staff was friendly as always. My advisor Colin kept me informed throughout the process.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Thank you for hearing me out throughout the whole
Thank you for hearing me out throughout the whole process. I appreciate your consideration and patience. I will let friends and family know about my experience.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Shout out to the salesman, Osbaldo Perez for awesome
Shout out to the salesman, Osbaldo Perez for awesome customer service And shout out to the finance manager Mr. Willie Hill for closing the deal. I appreciate all the help.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Immediate response.
Immediate response. Made an appointment to see the vehicle. Unfortunately, it sold before I arrived. However, the salesman did not make me drive over an hour to get there to find out it was gone. He called and texted to save me the trip. Really appreciate his respect of my time.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
⭐⭐⭐⭐⭐ Great experience at Sky Rides!
⭐⭐⭐⭐⭐ Great experience at Sky Rides! The team was professional and helpful from start to finish. Dulce provided excellent customer service, was very knowledgeable, and made the process easy and stress-free. Highly recommend Sky Rides and ask for Dulce!
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Very helpful team, willing to make business and willing
Very helpful team, willing to make business and willing to get you closer to your budget.very experienced sales person.clean vehicles.plenty vehicle inventory.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
They guy Joel does a great job and great person love his
They guy Joel does a great job and great person love his customer service i will be back again for another oil change because of him
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Very professional, great group.
Very professional, great group. Last Tesla I bought was purchased from a group that sells 50-65 teslas a month (idrive in Carrolton tx). Auto Boutique surprised me, and managed a Tesla sale like a group that sells 10x more of these technically challenging vehicles. They got the car added to my Tesla app quickly and I left the dealership able to supercharge and drive 6 hours to my home. The young guys ( Ethen Beck and Enrique Ovalles) were very Tesla literate. I'm a contributor to a tesla owners forum and have over 4 million content views, so I'm not a Tesla Newbie. I have a 2016 model s p85, a 2021 model y dual motor, and now a 2021 refresh model s long range to replace the aging ap1 car. These guys had the recurrent battery report in addition to the carfax so I could skip checking the battery. Staff went into service mode and we checked the error log. They got an update to post before adding the car and so I drove off in great shape!
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $59,407 | |
| 2025 GMC Sierra 1500 | $57,930 | 5 Great deals |
| 2024 GMC Sierra 1500 | $46,431 | 10 Great deals |
| 2023 GMC Sierra 1500 | $49,600 | 6 Good deals |
| 2022 GMC Sierra 1500 | $40,196 | 6 Good deals |
| 2020 GMC Sierra 1500 | $31,122 | 7 Good deals |
| 2018 GMC Sierra 1500 | $24,920 | 5 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 $35,762, with pricing starting at $15,200.
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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7 Great Deals out of 24 listings starting at $26,899
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7 Great Deals out of 24 listings starting at $26,899
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2021 GMC Sierra 1500 in Baytown, TX
7 Great Deals out of 24 listings starting at $26,899
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2021 GMC Sierra 1500 in Clear Lake Shores, TX
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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.
