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Used
2020 GMC Sierra 1500 trucks
for sale
near
Peachtree Corners, GA
- 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
Mr. Naser Khader was the salesperson that I worked with
Mr. Naser Khader was the salesperson that I worked with and was the primary reason for buying my new 4 runner. Professional and efficient. Made an overall great experience on the way car buying use to be and needs to be going forward. Thanks Naser!
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 came from Columbia SC to look at a Jeep Sahara I saw
I came from Columbia SC to look at a Jeep Sahara I saw online. Greg greeted us at the door and got us into a test drive and then purchasing the vehicle without any issues. He was friendly, efficient, and made my car buying experience a breeze. I would recommend ALM Marietta to friends and family, and ask for Greg!!!
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 Denali
Vehicle information
Features
Reviews
As car dealers go they're likely one of the best.
As car dealers go they're likely one of the best. Danny was real good and helpful to work with and made the difficult process much smoother. One surprising hangup though was finding out there wasn't a spare which I would've thought was standard with a jeep and though the Carfax report showed this particular vehicle came with a flat repair kit AutoNation would not provide a replacement for it. That instance of customer service was a real disappointment, but overall I would say that Danny provided good customer service.
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 AT4
Vehicle information
Features
Reviews
All Calavan personnel were very professional!
All Calavan personnel were very professional! Very impressed with teamwork approach and follow through given to the transaction process.
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 Denali
Vehicle information
Features
Reviews
My shopping experience @CarMax Roswell, Ga
My overall experience with this dealership and sales associates were very pleasant and sufficient. I was able to take my time in selecting my vehicle and was given accurate pricing info as I had already did my research for the car I was interested in. I wasn't pushed into a car I didn't want or desire after I decline to purchase the original car I went to the dealership to test drive. The associate took the time to look through the online lists of cars within a 150 miles of his dealership and after locating a car that I liked he was able to have the car transferred in from another state free of charge. I was called when the car arrived and made an appointment to check it out and I made a purchase.
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 Denali
Vehicle information
Features
Reviews
Easy and fast tire install, will be back for future
Easy and fast tire install, will be back for future service needs.. Quick, Affordable, Balanced, Tires, Workmanship, Quality.. Aquaman was great to work with, Thanks again!






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Dr.
Dr. Doom was fantastic in showing us a new Traverse and answered all of the questions we had about new Chevy's and other brands.






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Michael was knowledgeable and went above and beyond to
Michael was knowledgeable and went above and beyond to ensure I received a deal I was happy with. The entire staff responded promptly to all my inquiries and proactively worked to reduce the wait time to deliver and present my new car in pristine condition.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Dwayne was our service rep today.
Dwayne was our service rep today. He was beyond expectations. He was very responsive and professional, making sure we were kept informed and that we understood the repairs. Great service!






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Found a vehicle online.
Found a vehicle online. Scheduled a test drive and while we drove they got me the numbers for my trade. My salesman was Ben. Very knowledgeable and helpful. Very simple process. Highly recommend them and Ben to everyone.






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Jason went up above and beyond to help me!
Jason went up above and beyond to help me! You’re a rock star ⭐️. Thanks!






Vehicle information
Features
Reviews
Customer Service
Victoria in the business office provided awesome customer service. Thank you Victoria. You ROCK! Needed information on my extended service plan because my vehicle was disabled and I did not have the paperwork on me . She took the time to find the information for me.






Used
2020 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
My wife and I were looking for a used car.
My wife and I were looking for a used car. Micah and Colin were very patient and walked us though the various features of the car we had selected. Overall, we’re very pleased.






Vehicle information
Features
Reviews
America’s Xtreme Autos provided exceptional service from
America’s Xtreme Autos provided exceptional service from start to finish. The staff was friendly, knowledgeable, and attentive to my needs. I found the perfect car at a great price. Highly recommend!






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
very transparent and honest
excellent staff quick response and all the information requested was sent. very transparent. I would recommend this dealership to anyone. super friendly and knowledgeable staff.
There are 20 matching cars close to your year range.






Used
2022 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2022 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2019 GMC Sierra 1500 Denali
Vehicle information
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Used
2019 GMC Sierra 1500 Elevation
Vehicle information
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Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features






Used
2019 GMC Sierra 1500 AT4
Vehicle information
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Used
2019 GMC Sierra 1500 AT4
Vehicle information
Features






Used
2021 GMC Sierra 1500
Vehicle information
Features






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2019 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2022 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2021 GMC Sierra 1500 Denali
Vehicle information
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Vehicle information
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Used
2022 GMC Sierra 1500 Pro
Vehicle information
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Used
2019 GMC Sierra 1500 SLT
Vehicle information
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Used
2022 GMC Sierra 1500 AT4
Vehicle information
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Used
2022 GMC Sierra 1500 AT4
Vehicle information
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Used
2021 GMC Sierra 1500 AT4
Vehicle information
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Used
2021 GMC Sierra 1500 Base
Vehicle information
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Used
2022 GMC Sierra 1500 SLE
Vehicle information
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 1500 | $34,635 | 5 Great deals |
2024 GMC Sierra 1500 | $34,995 | 6 Great deals |
2023 GMC Sierra 1500 | $30,920 | 28 Good deals |
2022 GMC Sierra 1500 | $25,999 | 21 Good deals |
2021 GMC Sierra 1500 | $24,999 | 5 Great deals |
2019 GMC Sierra 1500 | $28,000 | 6 Good deals |
2018 GMC Sierra 1500 | $24,885 | 8 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 $37,323, with pricing starting at $14,934.
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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