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*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.
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Used
2020 GMC Sierra 1500 SLT trucks
for sale
near
Coppell, 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 SLT
Vehicle information
Features
Reviews
Car serviced and did maintenance on 2 recalls.
Car serviced and did maintenance on 2 recalls. Took sometime to complete due to the recall but overall they were awesome. Great overall service for the cat
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
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 !
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
Had a great experience working with Ricardo and Kenia at
Had a great experience working with Ricardo and Kenia at Hendrick Volkswagen! They worked with me on a good trade in for my car and we were able work out a good deal on my next car!
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!






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Omar was great!
Omar was great! Easy to work with, very knowledgeable, up front and honest. Would recommend Omar.
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 SLT
Vehicle information
Features






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Very accommodating and fast.
Very accommodating and fast. Came in right before they closed and everything was done in less than an hour. Would definitely come back and send friends and family. Andrew did a great job.
Vehicle information
Features
Reviews
They had the vehicle I wanted so it was fast, easy on the
They had the vehicle I wanted so it was fast, easy on the paperwork, and I got a good deal. Bruce is an excellent salesperson!






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Excellent experience at Dallas Lease Returns.
Excellent experience at Dallas Lease Returns. Chris Mikell was great to work with. The entire process was quick and with none of the stress or pressure that often accompanies car buying. I would definitely buy from this dealer again!






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features




Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Cowboy Toyota Wants To Serve You
My experience at Cowboy Toyota was pleasant, professional but most importantly profitable. I was able to finalize a deal and drive away in a new vehicle of my preference. They are easy to talk to and they make an effort to satisfy you as a guest as well as a customer. I feel assured in terms of recommending Cowboy Toyota to family and friends because I feel confident they will achieve the results they are looking for as it relates to buying a new car.




Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Vary nice people, vary good at helping In explaining
Vary nice people, vary good at helping In explaining about the car,and the price. I was not able to go to get the car do to Family issues.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
After many hours of learning current market values and
After many hours of learning current market values and contacting many dealerships, Classic Chevrolet in the first phone conversation revealed no fixed or high pressure add ons - that was enough for me. Dealing with Classic Chevrolet was about as straightforward as you can get in dealing with any car dealership. Vehicle was available and as described, no dealer add ons (which seems to be a major issue in Internet pricing), and no high pressure sales. Just the typical unfun price negotiation at the end which I have 100% experienced in my every car buying experience. As a totally different experience, cars.com should deny service to Autosaavy and Car Revolution. One would be insane to attempt a purchase after reading their reviews. They do harm to the Internet buying experience.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Honest and very fair with the outcome and findings.
Honest and very fair with the outcome and findings. I wasn't pressured into anything that was not needed. I was very pleased with the service.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Service department is top notch.
Service department is top notch..best of the best! Friendly yet professional, capably handled my every concern. Ride to/from my office very nice and appreciated touch!






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Very professional and friendly, good people to deal with
Very professional and friendly, good people to deal with not like your regular big car dealerships. Would highly recommend this place to others in the automotive market.






Vehicle information
Features
Reviews
I had a good experience at Eckert Hyundai, Chaz O'Connell
I had a good experience at Eckert Hyundai, Chaz O'Connell and Gavin Knighton were awesome to work with. They help me out without any pressure. I would go back to Eckert Hyundai in Denton again. Thank you.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great place to buy
I have bought several trucks from Kevin, they are my go to place for a good deal. Can't recommend them enough. They even got me a great rate on financing.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Sewell Dallas I typically do not write online reviews
Sewell Dallas I typically do not write online reviews however I feel strongly about telling you how Amazing my salesperson was as I purchased another RX350. Cynthia Lozano was simply the BEST in every way: knowledge, communication, no pressure. Cynthia made the entire experience super easy & even fun! I can easily recommend working with her at your next visit to Sewell Dallas!






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I am Very happy with the service I received from
I am Very happy with the service I received from Vandergriff Acura Arlington on May 1, 2024. George Hardwick went over and above helping me do an oil change on my 2020 Alfa Romero. He was very pleasant and efficient. He is one of the reasons my wife and I purchased this Alfa Romero and 3 other car from this dealership over the years.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Thank you very much.
Thank you very much. They were supportive and respectful. My salesperson, a wonderful young man named Eduardo, helped me through the process of buying my first car very well.
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 SLT | $60,500 | |
2025 GMC Sierra 1500 SLT | $47,900 | |
2021 GMC Sierra 1500 SLT | $26,902 | 16 Good deals |
About the 2020 GMC Sierra 1500 SLT
SLT shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Rear Wheel Drive
- Combined MPG
- 19
- Transmission
- 10-Speed A/T
- Engine
- 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel)

How much does the 2020 GMC Sierra 1500 SLT cost?
The 2020 GMC Sierra 1500 SLT price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 1500 SLT is $36,344, with pricing starting at $24,000.
What is the MPG of the 2020 GMC Sierra 1500 SLT?
The 2020 GMC Sierra 1500 SLT offers up to 17 MPG in city driving and 23 MPG on the highway for a combined rating of 19 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 options, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2020 GMC Sierra 1500 SLT?
The 2020 GMC Sierra 1500 SLT compares to and/or competes against the following vehicles:
Is the 2020 GMC Sierra 1500 SLT 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.
91% of drivers recommend this car
- Comfort 4.9
- Interior 4.8
- Performance 4.8
- Value 4.6
- Exterior 4.9
- Reliability 4.7
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.
Used 2020 GMC Sierra 1500 SLT by city
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2020 GMC Sierra 1500 SLT in Grapevine, TX
2 Great Deals out of 29 listings starting at $28,113
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2 Great Deals out of 28 listings starting at $29,000
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2 Great Deals out of 26 listings starting at $29,000
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2 Great Deals out of 29 listings starting at $29,000
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2 Great Deals out of 28 listings starting at $29,000
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2020 GMC Sierra 1500 SLT in Flower Mound, TX
2 Great Deals out of 25 listings starting at $29,000
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2020 GMC Sierra 1500 SLT in Addison, TX
2 Great Deals out of 28 listings starting at $29,000
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2020 GMC Sierra 1500 SLT in Southlake, TX
2 Great Deals out of 28 listings starting at $28,113
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2020 GMC Sierra 1500 SLT in Euless, TX
2 Great Deals out of 29 listings starting at $28,113
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2020 GMC Sierra 1500 SLT in Highland Village, TX
2 Great Deals out of 25 listings starting at $29,000
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2020 GMC Sierra 1500 SLT in Double Oak, TX
2 Great Deals out of 24 listings starting at $29,000
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2020 GMC Sierra 1500 SLT in The Colony, TX
2 Great Deals out of 25 listings starting at $29,000
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