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Used
2020 GMC Sierra 1500 trucks
for sale
near
Wilmer, 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.






Vehicle information
Features
Reviews
Working with Ethan on my 1st ever online purchase
Working with Ethan on my 1st ever online purchase - was the 1st experience everyone wants! He was efficient with communications, but never pushy. He was flexible and open to any questions, while walking me through the process! Friendly, knowledgeable, and great to work with. The financing process with David's help was a breeze! The process was time efficient and pretty flawless. He was on point with communication and very knowledgeable. Still loving my new car 2 months later- it exactly what I wanted and drives like a dream!!!
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 Denali
Vehicle information
Features
Reviews
My service rep was Brandon was on lunch when I came in.
My service rep was Brandon was on lunch when I came in. He made sure to come find me and introduce himself on his return from lunch. He was very communicative and ensured I was satisfied with the service and treatment received
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
My Service team members was Awesome.
My Service team members was Awesome.Thanks freedom dodge . This is My fifth Ram from 30 years Ram Ram best Truck go get one👋🏿
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
Omar was great!
Omar was great! Easy to work with, very knowledgeable, up front and honest. Would recommend Omar.
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 AT4
Vehicle information
Features
Reviews
Matt was excellent to work with.
Matt was excellent to work with. He got my son in his truck, and was very helpful and honest. We will be doing business here again. Thank you
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.






Vehicle information
Features
Reviews
Great Customer Service
Our sales person Samuel was accommodating, helpful, made sure we knew all of our options, and made the process so much easier. Sheryl in the back office where I signed all of the new owner paperwork and forms made it so much fun! Great staff. I came there to get a used car because my husband had such a great experience there last year getting his car.





Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Luxury Vehicles and Luxury Customer Service!
My mom set an appointment with James to come see a Range Rover HSE. We drove in from Louisiana. I came with her to potentially drive the rental car back. Not only did she leave with her car, I ended up calling my bank to purchase a vehicle as well. The service is unmatched. Top notch service, and an amazing selection of vehicles! I would recommend this team to anyone for their next purchase.






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 Denali
Vehicle information
Features
Reviews
They were great.
They were great. Very attentive, kept checking in with me. Great dealership. I drag my feet too much. I would recommend them to everyone. Great people working tgere






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
Brad is always great to work with.
Brad is always great to work with. The dealership is clean and everybody is friendly. The guys were prompt getting my alignment done and checking for any recalls.



Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Great service!
Great service! Fast transaction, no hassle. I was completely pleased with my experience purchasing my vehicle with them.






Vehicle information
Features
Reviews
Absolutely Fantastic experience !
Absolutely Fantastic experience !! Randall, Steve and Bryant are great to work with. They went out of their way to make this deal happen!!! I would absolutely do it all again. Until next time God Bless Pastor Tracy Boyd






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
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 Denali
Vehicle information
Features
Reviews
I give 5+ stars to this dealership.
I give 5+ stars to this dealership. We accompanied our granddaughter to purchase her first car. Kim was the sales associate. She was awesome…no pressure, answered her questions, and helped her to get payments that were affordable. She found just the car that was best for her, with the help of Kim, at a competitive price. Everyone was so helpful and the finance department explained the paperwork in a way a first-time car buyer could understand. I definitely recommend Autos of Forney!






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great experience on a long distance deal.
Great experience on a long distance deal. Vehicle was shipped and arrived before I had signed paperwork! Vehicle arrived as advertised with recent repairs completed, new tires, and detailed.






Vehicle information
Features
Reviews
The Serviceis the best !
The Serviceis the best ! Very friendly an helpful. Joshua met us at the door a very nice e person. I will refer them to other people .






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
The dealership was clean and Christopher Walker, our
The dealership was clean and Christopher Walker, our salesman, was very professional and kind. If I buy a car I will come here!






Used
2020 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Great Truck i bought and a great price Highly recommend
Great Truck i bought and a great price Highly recommend Great TRX Will buy from them again. Go check them out.
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $44,319 | |
2025 GMC Sierra 1500 | $34,637 | 6 Great deals |
2024 GMC Sierra 1500 | $28,995 | 6 Great deals |
2023 GMC Sierra 1500 | $29,995 | 14 Good deals |
2022 GMC Sierra 1500 | $33,451 | 19 Good deals |
2021 GMC Sierra 1500 | $19,991 | 28 Good deals |
2019 GMC Sierra 1500 | $21,998 | 7 Good deals |
2018 GMC Sierra 1500 | $12,999 | 11 Good deals |
2017 GMC Sierra 1500 | $22,381 | 7 Good 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 $36,830, with pricing starting at $14,681.
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.
What are some similar vehicles and competitors of the 2020 GMC Sierra 1500?
The 2020 GMC Sierra 1500 compares to and/or competes against the following vehicles:
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.
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Research the 2020 GMC Sierra 1500
Compare the 2020 GMC Sierra 1500
2020 GMC Sierra 1500 by city
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2020 GMC Sierra 1500 in Hutchins, TX
5 Great Deals out of 39 listings starting at $19,000
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3 Great Deals out of 25 listings starting at $19,000
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5 Great Deals out of 38 listings starting at $19,000
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2020 GMC Sierra 1500 in Pecan Hill, TX
3 Great Deals out of 25 listings starting at $19,000
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2020 GMC Sierra 1500 in DeSoto, TX
4 Great Deals out of 39 listings starting at $19,000
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2020 GMC Sierra 1500 in Glenn Heights, TX
4 Great Deals out of 37 listings starting at $19,000
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2020 GMC Sierra 1500 in Oak Leaf, TX
3 Great Deals out of 27 listings starting at $19,000
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6 Great Deals out of 35 listings starting at $19,000
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2020 GMC Sierra 1500 by body style
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