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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.
  
 
            
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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2021 GMC Sierra 1500 SLT
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Reviews
My new 2025 Trax had a check engine light come on shortly
My new 2025 Trax had a check engine light come on shortly after I purchased it from Robbins Chevrolet. Alex Fierro was my service mgr. from the start. He checked in with me several times a week. He was polite and concerned about my needs. I was a little frustrated because we were waiting on a part, but Alex kept me calm during the wait. He was exactly the person I needed while my car was in the service center. Thank you, Alex, and thank you, Robbins Chevrolet! Lisa O.
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.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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Trevor made mine and my wife such an amazing experience
Trevor made mine and my wife such an amazing experience at the Baytown ford , I would definitely recommend him to anyone, he was able to make our process smoother then it was on his end but able to make it happen we are very happy with our decision thank you
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...
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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2021 GMC Sierra 1500 Elevation
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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
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Reviews
Thorpe Plant Services
Was in need for 1/2 and 3/4 tons service trucks for my company and once located and reached out to the dealership I was fortunate to work with a great salesperson Robert Winter. He was very thorough and responsive and helped my get 7 new trucks.
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
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Reviews
mini cooper
The environment is good, the service is good, too. The service staff introduce the car in detail patiently and warm-heartedly. I am very happy with his service.
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!
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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Superb customer service, Christian was very courteous and
Superb customer service, Christian was very courteous and answered all of my questions. I purchased a G63 AMG and love my vehicle! Thank you very much Christian and the ABZ Motors team!
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2021 GMC Sierra 1500 SLT
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            Used
2021 GMC Sierra 1500 SLT
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            Used
2021 GMC Sierra 1500 SLT
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2021 GMC Sierra 1500 SLT
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Beck & Masten did a great job servicing my ?
Beck & Masten did a great job servicing my ?21 GMC Sierra. Reps were friendly and work was performed quickly. Coffee was great as well. A
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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2021 GMC Sierra 1500 AT4
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Great customer service.
Great customer service. Anthony has helped with the purchase of multiple vehicles and always a pleasure to work with. Always an easy process. Will be returning for next new vehicle
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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2021 GMC Sierra 1500 SLE
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Best car buying experience hands down!
Best car buying experience hands down! The process was efficient and quick. Everyone was helpful and friendly, no pressure. This will be the only way I purchase a car from now on.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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2021 GMC Sierra 1500 Elevation
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2021 GMC Sierra 1500 Denali
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2021 GMC Sierra 1500 AT4
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AMAZING DEALERSHIP AND PEOPLE
Honestly the BEST car buying experience we have ever had:) I highly recommend Gay Family Auto Trey, Kiss and Steve are amazing. From the time we walked in to the day that Trey delivered my sons truck it was ABSOLUTELY PROFESSIONAL.
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2021 GMC Sierra 1500 SLT
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I'm very pleased with this dealership.
I'm very pleased with this dealership. Top-notch service, friendly staff, quality vehicles, and a great level of personalized service. Rudy was the best salesman I've worked with, and this is the 7th car I've bought in my many years driving. I'm really impressed with the automobile I bought and with the price. Truly a no-haggle and no-hassle deal. Hamida made the financing paperwork easy and quick. I've already recommended them to two coworkers and I will be shopping for my next vehicle here too. Thank you again Rudy!
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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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
Used
2021 GMC Sierra 1500 SLT
Vehicle information
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The entire team and management are very helpful and easy
The entire team and management are very helpful and easy to work with. And a great inventory to chose from. The entire process was seamless. Rafael Benavides takes excellent care of his customers.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2021 GMC Sierra 1500 Denali
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2021 GMC Sierra 1500 Elevation
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Manny was great!
Manny was great!! Ask for him and he will help you with any questions you may have and then some.
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals | 
|---|---|---|
| 2026 GMC Sierra 1500 | $61,977 | 1 Good deal | 
| 2025 GMC Sierra 1500 | $58,641 | 10 Great deals | 
| 2024 GMC Sierra 1500 | $50,639 | 5 Great deals | 
| 2023 GMC Sierra 1500 | $46,961 | 11 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 $37,444, with pricing starting at $13,699.
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.
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.
  
Research the 2021 GMC Sierra 1500
Compare the 2021 GMC Sierra 1500
2021 GMC Sierra 1500 Trucks by city
- 
  
    2021 GMC Sierra 1500 Trucks in Deer Park, TX
  
  4 Great Deals out of 30 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in Pasadena, TX
  
  4 Great Deals out of 30 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in Nassau Bay, TX
  
  1 Great Deal out of 22 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in Channelview, TX
  
  4 Great Deals out of 32 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in Highlands, TX
  
  2 Great Deals out of 25 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in Webster, TX
  
  2 Great Deals out of 23 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in South Houston, TX
  
  6 Great Deals out of 34 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in Cloverleaf, TX
  
  6 Great Deals out of 35 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in Galena Park, TX
  
  6 Great Deals out of 35 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in League City, TX
  
  1 Great Deal out of 21 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in Jacinto City, TX
  
  6 Great Deals out of 35 listings starting at $25,450 
- 
  
    2021 GMC Sierra 1500 Trucks in Barrett, TX
  
  2 Great Deals out of 22 listings starting at $25,450 
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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.
