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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
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.
Vehicle information
Features
Reviews
Steven V.
Steven V. made the buying process seamless and easy. 10/10 would recommend for my next car purchase
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
Great experience overall, Joshua was very helpful with
Great experience overall, Joshua was very helpful with what our needs were an really worked to get us what we needed.
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
Una experiencia inolvidable, proceso rápido y muy buen
Una experiencia inolvidable, proceso rápido y muy buen servicio. Estoy muy contento con mi carro! 🥳
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
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!
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
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.
Certified
2021 GMC Sierra 1500 SLT
Vehicle information
Reviews
Super smooth buying process
I worked with Julio when I went to possibly purchase a car from McRee Ford. I had done months of research and I knew the exact numbers I wanted and what was actually feasible. I knew I wanted a good, borderline great deal according to the true car values. Julio was super helpful showing me around, especially considering a had a rambunctious 2 year old wreaking havoc on the store during the process. He showed me everything I wanted to see and tried explaining everything that he could about the car. As for the buying process, I was firm in only going up to a certain amount and being ok with them accepting or refusing my offer. After some quick back and forth, they finally accepted what I feel is a very fair offer for both of us. Overall, I could not be more happy with the entire process.
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
Joseph Malbrough Was great whole process was easy.
Joseph Malbrough Was great whole process was easy. He answered every question I had perfectly
Vehicle information
Features
Reviews
We bought the 2006 H2 Hummer It was clean and very well
We bought the 2006 H2 Hummer It was clean and very well kept We would recommend Emmons to others in the future 👍🏿
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great as they not only deliver great repair service but
Great as they not only deliver great repair service but they keep you informed as they go. Felt like a valued customer. I will definitely use them again
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
The problem identified, suggested resolution provided,
The problem identified, suggested resolution provided, repair quickly completed. Excellent service experience. The service organization was taken care of my vehicle for the past ten years. Zee
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
Reviews
Great staff.
Great staff. Great experience. Loved the vehicle selection and quality. They took great care of my family.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I highly recommend Sky Rides Automotive.
I highly recommend Sky Rides Automotive..great inventory you will find the vehicle you are looking for at a fair priced friendly and professional sales team!!!
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 SLT
Vehicle information
Features
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 SLT
Vehicle information
Features
Reviews
I recently had an exceptional car shopping experience at
I recently had an exceptional car shopping experience at Auto Boutique. From the moment I walked through the door, the staff was incredibly responsive, addressing all my queries with patience and professionalism. They were genuinely helpful, guiding me through the process without any pressure, ensuring I felt informed about my choices. The politeness of everyone at Auto Boutique was particularly noteworthy; they made me feel valued and respected throughout my visit. I have not yet found a car that perfectly matched my needs but left with a positive impression of what customer service should be. Highly recommended for anyone looking for a smooth and pleasant car buying journey.
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $59,374 | 1 Good deal |
| 2025 GMC Sierra 1500 | $58,741 | 5 Great deals |
| 2024 GMC Sierra 1500 | $44,981 | 6 Great deals |
| 2023 GMC Sierra 1500 | $48,357 | 6 Good deals |
| 2022 GMC Sierra 1500 | $40,144 | 7 Good deals |
| 2020 GMC Sierra 1500 | $31,278 | 8 Good deals |
| 2018 GMC Sierra 1500 | $24,910 | 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 $35,717, 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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2021 GMC Sierra 1500 in Shoreacres, TX
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9 Great Deals out of 24 listings starting at $26,899
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2021 GMC Sierra 1500 in Seabrook, TX
9 Great Deals out of 24 listings starting at $26,899
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2021 GMC Sierra 1500 in Baytown, TX
9 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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11 Great Deals out of 29 listings starting at $26,899
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2021 GMC Sierra 1500 in Channelview, TX
13 Great Deals out of 39 listings starting at $26,493
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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.
