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  Used
  2020 GMC Sierra 1500 trucks
  for sale
  
  
    near
Mesquite, 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
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I purchased an SUV with Samuel Dixon.
I purchased an SUV with Samuel Dixon. He was so awesome to work with and the sales transaction went smoothly. Sam and the team were straightforward. I look forward to purchasing again in the future. In the past, I've been to different dealerships, and I was tired of their deceitful tactics.
Great truck!
I bought my 2020 with 36k miles a couple of years ago and I now have 60k miles of trouble free very enjoyable driving. It was expensive, but worth every penny. The ride is so quiet and comfortable my wife and I prefer traveling in it instead of our 2018 Acura MDX which we also love. The 5.3 V8 has plenty of power and towing ability. The multi-function tail gate is genius, I hope to never be without one again. We so enjoy all the bells and whistles, especially the wireless phone charger. So glad I bought this truck!
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Stonebriar Chevy rates highly for their service to their
Stonebriar Chevy rates highly for their service to their customers. Advisor Caleb is knowledgeable, professional and courteous. The Service Team always tries to get me in and out quickly while keeping quality-focused.
Short turn radius
I purchased pre-owned 2020 1500 SLT in February of this year. The truck rides comfortable and has plenty of room front and rear. My and I both enjoy it. My only drawback is the turn radius (lock to lock). It lacks compared to my wife's 2018 Yukon SLT, or the 2016 Ram I traded in. Have to many times maneuver twice to park it going forward or reverse. Otherwise happy with our purchase.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Fantastic service from start to finish.
Fantastic service from start to finish. The team delivered professional, high-quality work with clear, timely communication at every step. Gabbi was an exceptional advisor ? knowledgeable, responsive, and proactive ? and helped guide the process so everything was completed smoothly and without stress. Hands down the best in town for these services. I highly recommend them to anyone who wants reliable, efficient results and outstanding customer care
Great Truck
I did my research and test drove several models. The GMC 1500 Duramax does everything I want it to do and more. Great gas milage, nice power and very comfortable.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Excellent - Fred Guiette - Service Manager / Advisor at
Excellent - Fred Guiette - Service Manager / Advisor at Park Place Grapevine TX - Fantastic Lexus Service 4/2025 from Fred Guiette at Park Place Lexus Grapevine ; Great service always and Fred is Excellent - very detailed , polite , kind, efficient and keeps you updated about service progress and goes out of his way to make sure all concerns are addressed and the service is done right - EXCELLENT ! FANTASTIC ! 10 stars !!! Thankyou ; sincerely C. Abraham "
Best truck we have owned!
Truck meets my and my wife's needs. She loves her and I do to! Love sport mode and the tow hail mode. Rides like a Cadillac!
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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I recently purchased a 2020 Mercedes G550 from Top Line
I recently purchased a 2020 Mercedes G550 from Top Line Auto, and I couldn’t be happier! The car is absolutely phenomenal—every detail exceeds my expectations. The service I received was exceptional, going above and beyond to ensure a seamless experience. If you’re in the market for a vehicle, I highly recommend Top Line Auto. They truly deliver excellence in both cars and customer care!
Best truck I’ve bought
The features and styling are very aesthetic. The truck has very smooth handling and response. I am impressed with the response from the Diesel engine.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I went in and they worked with me quickly on the truck
I went in and they worked with me quickly on the truck that I was looking at and addressed all of the issues/concerns that I had immediately. I highly recommend this place if you’re looking for a pick up.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Dennis made the buying process very easy and I was able
Dennis made the buying process very easy and I was able to drive away with the truck I was looking for in no time! Highly recommend
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Thank You Ennis Ford
Great service! Thank you so much to Jon and everyone at Ennis Ford! I made a great decision stopping here to purchase a vehicle, again thank you.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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Same old car dealer tricks
Update, I was quickly contacted by the GM who promised to make good on the car by either getting rid of the smell or take the car back.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Erik, was my sales consultant.
Erik, was my sales consultant. They worked with me and got the price I wanted, helping me out. I traveled from over 140 miles one way to purchase vehicle. I would travel again to do it!!!! Also I don't want to forget Derek a director at Clay C. it was late when I arrived they where still glad to see me. Worked with me past business hours. These Guys were 👍 great to me..
 
          
        
       
          
        
       
          
        
      Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
First time customer in Dallas, Tx
For some reason Mark's name is not on the list where it says, "Choose their name," but Mark was so helpful, patient, explained the process clearly and was very professional. I highly recommend him and would work with him and his team again. I would hope for a promotion for him Hyundai. :)
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Good experience in dealing with Kerron at dallas lease
Good experience in dealing with Kerron at dallas lease returns, would Definitely buy another vehicle from him !
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 SLT
Vehicle information
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Thank you! Best dealership in town!
Had a great experience at this dealership! Michael Dominguez made the process of buying a new car so easy and affordable for us! I would recommend this Jeep dealership to everyone!
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great Service!!!!!
I truly enjoyed my shopping experience yesterday on Friday. October 2, 2015. Mia was very patient, professional, and caring in listening to my needs and concerns. With God's and Mia's help I was able to purchase a 2015 Ford Focus. Thank you again Mia for being an excellent salesperson. I will definitely recommend CarMax to my friends.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Matt was absolutely AMAZING!
Matt was absolutely AMAZING! Bought offline all the way from SC.. I couldn’t be more pleased with their service and my vehicle.. I would give them 10 stars if I could!!! FANTASTIC EXPERIENCE from start to finish
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
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Easy and Smooth transaction.
Easy and Smooth transaction. Car was in pristine condition. There wasn’t much haggling on the price, their adds are pretty decent compared to the other dealerships I went to. Yes i did buy a warranty but who wouldn’t
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            GMC Certified
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Nathan always gets us in and out with great service!
Nathan always gets us in and out with great service! Quick oil change, tire rotation, and air filter were done. This is the only place to go!
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I recently bought my Corvette from Corvette Warehouse and
I recently bought my Corvette from Corvette Warehouse and worked with Wes. He made the entire process incredibly easy from start to finish. I had the car shipped from Dallas, Texas to Irvine, California, and they handled all the paperwork and transport details for me. The whole process was seamless, and I loved that the shipment was fully tracked the entire way. The car arrived in perfect condition. Honestly, it looked even better than it did online! No issues whatsoever, just a smooth and professional experience all around. If you’re looking for a Corvette and want a stress-free buying process, definitely ask for Wes. He’ll take great care of you!
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Nice cars.
Nice cars. Good prices. No hidden fees or pressure sale tactic, it was a good experience
Vehicle information
Features
Reviews
Great experience, I was nervous to purchase a new vehicle
Great experience, I was nervous to purchase a new vehicle but Aaron got me into exactly what I wanted. Friendly, personable staff helped me into the best loan and I was able to drive home in my new car a couple hours later!
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals | 
|---|---|---|
| 2026 GMC Sierra 1500 | $62,261 | |
| 2025 GMC Sierra 1500 | $54,717 | 10 Great deals | 
| 2024 GMC Sierra 1500 | $50,983 | 12 Great deals | 
| 2023 GMC Sierra 1500 | $47,311 | 8 Great deals | 
| 2022 GMC Sierra 1500 | $44,050 | 25 Good deals | 
| 2021 GMC Sierra 1500 | $37,720 | 8 Great deals | 
About the 2020 GMC Sierra 1500
Base shown (base trim).
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 17
- Transmission
- 6-Speed A/T
- Engine
- 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)
 
          How much does the 2020 GMC Sierra 1500 cost?
The 2020 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 2020 Sierra 1500 is $35,754, with pricing starting at $16,362.
What is the MPG of the 2020 GMC Sierra 1500?
The 2020 GMC Sierra 1500 offers up to 15 MPG in city driving and 21 MPG on the highway for a combined rating of 17 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 2020 GMC Sierra 1500 reliable?
The 2020 GMC Sierra 1500 has an average reliability rating of 4.7 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2020 Sierra 1500 owners.
Is the 2020 GMC Sierra 1500 a good truck?
Below are the Cars.com consumer ratings for the 2020 GMC Sierra 1500.
- Comfort 4.9
- Interior 4.8
- Performance 4.8
- Value 4.6
- Exterior 4.9
- Reliability 4.7
91% of drivers recommend this car
- Comfort 4.9
- Interior 4.8
- Performance 4.8
- Value 4.6
- Exterior 4.9
- Reliability 4.7
AT4 (3 styles)
| Style | ||
|---|---|---|
| 4WD Double Cab 147" AT4 | 4WD Crew Cab 157" AT4 | 4WD Crew Cab 147" AT4 | 
| Inventory price | ||
| Starting at $51,300 | Starting at $54,000 | Starting at $53,700 | 
| Combined MPG | ||
| 18 | 18 | 18 | 
| Engine | ||
| 420.0-hp, 6.2-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) | 
Base (8 styles)
| Style | |||||||
|---|---|---|---|---|---|---|---|
| 4WD Crew Cab 157" | 2WD Double Cab 147" | 2WD Crew Cab 147" | 4WD Double Cab 147" | 2WD Crew Cab 157" | 4WD Crew Cab 147" | 4WD Reg Cab 140" | 2WD Reg Cab 140" | 
| Inventory price | |||||||
| Starting at $39,500 | Starting at $33,500 | Starting at $35,900 | Starting at $36,800 | Starting at $36,200 | Starting at $39,200 | Starting at $34,200 | Starting at $29,600 | 
| Combined MPG | |||||||
| 20 | 20 | 20 | 20 | 20 | 20 | 17 | 17 | 
| 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) | 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 (4 styles)
| Style | |||
|---|---|---|---|
| 2WD Crew Cab 157" Denali | 4WD Crew Cab 147" Denali | 4WD Crew Cab 157" Denali | 2WD Crew Cab 147" Denali | 
| Inventory price | |||
| Starting at $55,400 | Starting at $58,600 | Starting at $58,900 | Starting at $55,100 | 
| Combined MPG | |||
| 19 | 18 | 18 | 19 | 
| 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) | 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 
Elevation (6 styles)
| Style | |||||
|---|---|---|---|---|---|
| 4WD Crew Cab 157" Elevation | 2WD Double Cab 147" Elevation | 2WD Crew Cab 157" Elevation | 2WD Crew Cab 147" Elevation | 4WD Double Cab 147" Elevation | 4WD Crew Cab 147" Elevation | 
| Inventory price | |||||
| Starting at $46,500 | Starting at $40,500 | Starting at $43,200 | Starting at $42,900 | Starting at $43,800 | Starting at $46,200 | 
| Combined MPG | |||||
| 20 | 21 | 21 | 21 | 20 | 20 | 
| 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) | 
SLE (6 styles)
| Style | |||||
|---|---|---|---|---|---|
| 2WD Crew Cab 157" SLE | 2WD Double Cab 147" SLE | 4WD Double Cab 147" SLE | 2WD Crew Cab 147" SLE | 4WD Crew Cab 157" SLE | 4WD Crew Cab 147" SLE | 
| Inventory price | |||||
| Starting at $40,700 | Starting at $38,000 | Starting at $41,300 | Starting at $40,400 | Starting at $44,000 | Starting at $43,700 | 
| Combined MPG | |||||
| 21 | 21 | 20 | 20 | 20 | 20 | 
| 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) | 
SLT (6 styles)
| Style | |||||
|---|---|---|---|---|---|
| 4WD Crew Cab 147" SLT | 2WD Crew Cab 147" SLT | 4WD Crew Cab 157" SLT | 4WD Double Cab 147" SLT | 2WD Double Cab 147" SLT | 2WD Crew Cab 157" SLT | 
| Inventory price | |||||
| Starting at $50,400 | Starting at $46,900 | Starting at $50,700 | Starting at $48,000 | Starting at $44,500 | Starting at $47,200 | 
| Combined MPG | |||||
| 18 | 19 | 18 | 18 | 19 | 19 | 
| 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) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 355.0-hp, 5.3-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 2020 GMC Sierra 1500
Compare the 2020 GMC Sierra 1500
2020 GMC Sierra 1500 Trucks by city
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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.

