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Used
2020 GMC Sierra 1500 SLT trucks
for sale
near
Little Elm, 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
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 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
I really appreciate Jacob Blau at Five Star Chevrolet.
I really appreciate Jacob Blau at Five Star Chevrolet. He was a huge help in my purchase of my 2LT Corvette C8 in riptide, blue. Best, Calub
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
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.
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
Ricky was AMAZING.
Ricky was AMAZING. So thorough and thoughtful. Helped me find the perfect vehicle. I am so grateful
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
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
Received great service from Mazda 1 dealership.
Received great service from Mazda 1 dealership. I would definitely recommend . Dj provided excellent service. Needless to say I left happy , and will be back






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
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.






Vehicle information
Features
Reviews
Buying a used car
Friendly, and helpful people. Trent went out of his way, to help me, and keep me informed. Hopper gave me a very good deal on my trade in. VIP treatment. I would buy from them, again.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Outstanding service; expert friendly folks!
Outstanding service; expert friendly folks! Highly recommended service provider for the make and model car that I own. I will come back for future service procedures and or product recalls.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great buying experience, much better than other
Great buying experience, much better than other dealerships for buying a vehicle. They didn't force us to add an extended warranty or other typical dealership nonsense.






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
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
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
Nice cars.
Nice cars. Good prices. No hidden fees or pressure sale tactic, it was a good experience
GMC Certified
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Sewell is THE BEST...
My second vehicle from this dealership. My second Buick Enclave and it keeps getting better.
There are 20 matching cars close to your year range.






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2021 GMC Sierra 1500 SLT
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Used
2021 GMC Sierra 1500 SLT
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Used
2018 GMC Sierra 1500 SLT
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Used
2019 GMC Sierra 1500 SLT
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Used
2018 GMC Sierra 1500 SLT
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Used
2022 GMC Sierra 1500 SLT
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Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Used
2018 GMC Sierra 1500 SLT
Vehicle information
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Used
2019 GMC Sierra 1500 SLT
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Used
2018 GMC Sierra 1500 SLT
Vehicle information
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Used
2018 GMC Sierra 1500 SLT
Vehicle information
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Used
2018 GMC Sierra 1500 SLT
Vehicle information
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Used
2022 GMC Sierra 1500 SLT
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Used
2022 GMC Sierra 1500 SLT
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Used
2022 GMC Sierra 1500 SLT
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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 | $44,888 |
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 $36,171, with pricing starting at $21,995.
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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1 Great Deal out of 22 listings starting at $28,787
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2020 GMC Sierra 1500 SLT in Copper Canyon, TX
1 Great Deal out of 20 listings starting at $28,787
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