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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 trucks
for sale
near
Geneva, IL
- 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 Denali
Vehicle information
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Reviews
I just purchased a 2023 Nissan Rouge SV from Rony
I just purchased a 2023 Nissan Rouge SV from Rony Durante. He was amazing! He made the process so easy and was such a pleasure to work with. Usually shopping for a car is so stressful but Rony made it easy and made it no pressure. Thank you Rony for the wonderful experience! We will be back again and recommend our friends and family!
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
Very professional, excellent communication Friendly
Very professional, excellent communication Friendly staff, and had the vehicle we wanted, would deal with them again
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
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
Janel and Dave very helpful.
Janel and Dave very helpful. I wanted a jeep. I saw one online so wanted to check it out it was missing a few things I really wanted. Janel went Dave and talking Dave said there was one that just came in the night before. I took it on a test drive yes that was the one. Went back in Dave was doing magic with numbers found the one so I bought my jeep. Only have great things to say. I would definitely tell my friends to come her. This has been the most comfortable atmosphere. Thank you Janel and Dave
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 Elevation
Vehicle information
Features
Reviews
David helped me get into a vehicle when no one else
David helped me get into a vehicle when no one else could! I came from Elgin to the number 1 Nissan dealer in Illinois and they are number 1 for a GREAT reason! I love my new Sentra and it was because of David! Ask for him when you come and you won't be disappointed!
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
Andrew Doyle at this dealership was amazing to work with.
Andrew Doyle at this dealership was amazing to work with. He was soft spoken, detailed yet concise. He was influential in making a deposit for a purchase. I had to pull out later for other reasons. But I give high regards to Andrew’s work.






Used
2020 GMC Sierra 1500 Elevation
Vehicle information
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Reviews
McGrath is the best Honda dealer
My name is frank dichristofano and I own a 2015. On August 7th I needed routine maintenance done to my vehicle. So I always I had the work done at mcgrath honda of elgin . Because they are the best Honda dealership. There have the service department and they are always very professional and courteous and put the needs of the there customers first. When my vehicle is being work on I know my car is in hands. Because there mechanics are the best and they always such an outstanding job with my vehicle. So thank you to everyone at McGrath Honda!!
Vehicle information
Features
Reviews
Excellent Car with Comfort, Style, and Outstanding
Excellent Car with Comfort, Style, and Outstanding Service I recently purchased a 2016 Honda Accord EX-L, and I couldn’t be happier with my decision. Not only is the car fantastic, but the buying experience was smooth and enjoyable, thanks to Elman, the salesperson who assisted me. The car itself is a perfect blend of performance, comfort, and style. The 2.4L engine delivers smooth acceleration with excellent fuel efficiency, making it ideal for both city commutes and highway trips. The CVT transmission ensures a seamless and comfortable driving experience. Inside the cabin, the premium feel stands out. The leather seats are not only luxurious but also extremely comfortable, especially with the heated feature. The dual-zone climate control is a thoughtful addition that allows for personalized comfort. The technology package is impressive for a 2016 model. I love the touchscreen infotainment system, Apple CarPlay, and Android Auto for seamless connectivity. The advanced safety features, like lane-keeping assist and adaptive cruise control, provide added peace of mind on every drive. As for the exterior, the sleek, timeless design of the Accord EX-L is a head-turner. The LED daytime running lights and stylish alloy wheels enhance its sporty yet sophisticated appearance. I also want to give a big shoutout to Elman, who made the buying process truly enjoyable. He was professional, knowledgeable, and patient throughout. He took the time to answer all my questions, explain the features, and ensure I was confident in my purchase. It’s rare to find such excellent customer service, and Elman went above and beyond to make sure I had a great experience. Overall, I’m thrilled with my 2016 Honda Accord EX-L and highly recommend both the car and working with Elman if you’re in the market for a vehicle.






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Good experience fast service
I had a good experience with Chris Price awesome sales man.. no pushy sales tactics.. he was honest and straight to the point.. I have bad credit.. and was turned down from alot of different dealers Marino, Hawk,Naperville and Shermans.. all said No.. but Carmax have me thre car I wanted wth super low miles.. Thanx Chris you a good guy 🤗






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Justin always goes above and beyond.
Justin always goes above and beyond. He pays attention to detail and I recommend him for future services!


Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Great people to work with.
Great people to work with. Very professional, courteous, helpful and thorough. They follow through with all of their commitments. The trade process was straight forward and was just as agreed.






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
10/10 experience.
10/10 experience. Definitely worth the drive to get the car I wanted. Brian was great! He got us the best deal on a brand new suv.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Kyle got us the vehicle we wanted at a reasonable price.
Kyle got us the vehicle we wanted at a reasonable price. We were able to drive the vehicle home the same day.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
What a great experience at D?
What a great experience at D? Arcy Buick Dealership in Joliet IL. The staff was friendly, honest, and made the whole process easy. Ray our salesperson went above and beyond. I love my new Envision Sport and would definitely recommend D?Arcy Buick and ask for Ray!!






Used
2020 GMC Sierra 1500 Base
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Reviews
Andrew Allen was amazing partner in my purchase so
Andrew Allen was amazing partner in my purchase so patient and great knowledge related to my Encore and Buick. The walk through was very thorough even providing me with his direct access for all future questions.






Used
2020 GMC Sierra 1500 Denali
Vehicle information
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Reviews
Purchased a Camaro from 900 miles away.
Purchased a Camaro from 900 miles away. Anthony and Dan did a good job and made the purchase easy. They also assisted in shipping the car to me.






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Battery
Todd was very helpful and made sure my car was pulled inside when leaving as it was very slippery outside






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Overall, very professional, progressed as a sale should,
Overall, very professional, progressed as a sale should, and they followed through on the details. Car arrived very clean, everything was included as expected. Transport service ran into some issues but they kept me in the loop and went out of their way to get the vehicle to us as quickly as they could (arrived at midnight and the driver still had 1 more stop to make, he was a nice as could be, and had no complaints - that is dedication). We are 180 miles away and Lexus of Naperville will be our new "go to" for Lexus vehicles. Closer dealers are not as transparent, and seem to be in the habit of wasting your time. It is hard to find a dealer that simply wants to sell a vehicle without playing any games. Lexus of Naperville is where you should go - ask for "Brendon" and "AP", they did a nice job. I didn't get a chance to work with her much, but Yvette was also very nice. Zach Paino from "Ship your car safely" was my contact for the transport.






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great service from Eduardo.
Great service from Eduardo. I don’t much about cars but he helped find one that best fit my needs.

Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Marquartd of Barrington is an amazing dealership because
Marquartd of Barrington is an amazing dealership because of their integrity and great customer service! I bought my new car 2017 and have relied only on them to maintain it. They are trustworthy and truly care about the customer. Their work ethic and philosophy reflect heavenly standards. I will never go anywhere else!
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GMC Sierra 1500 prices by year
Model year | Average price | Deals |
---|---|---|
2026 GMC Sierra 1500 | $60,872 | |
2025 GMC Sierra 1500 | $58,184 | 7 Good deals |
2024 GMC Sierra 1500 | $54,565 | 22 Good deals |
2023 GMC Sierra 1500 | $46,704 | 6 Great deals |
2022 GMC Sierra 1500 | $43,911 | 18 Good deals |
2021 GMC Sierra 1500 | $36,430 | 5 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 $35,914, with pricing starting at $16,748.
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
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2 Great Deals out of 26 listings starting at $16,995
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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.