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Used
2020 GMC Sierra 1500 trucks
for sale
near
Mount Prospect, 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
Features
Reviews
I want to share the fantastic experience we had while
I want to share the fantastic experience we had while purchasing our new Lexus GX from Lexus of Naperville. The entire staff was extremely helpful throughout the entire process, making it a truly enjoyable experience. A special shoutout to our sales consultant, Dylan, who was incredibly patient and thorough during our introduction to the GX. They took the time to explain all the technical aspects of the vehicle, ensuring we felt confident and well informed about our new purchase. We absolutely love our new Lexus and couldn’t be happier with the service we received.
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
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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!
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 AT4
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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.
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
The service met what i needed.
The service met what i needed. I was able to ensure that the price of the repairs that were needed were affordable and correct. I just wish some of the future repairs that are needed are more affordable and could be more explained by the customer service representative like the previous rep that I had at the previous visit. Overall, the facility was very clean and i was able to meet with one of the car/service representative. I was able to meet with a car dealer who was very friendly and ensure that I had his contact information, in the event I plan or may want to purchase a new vehicle in the near future, which i plan too.
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 Base
Vehicle information
Features
Reviews
Very professionals the salesperson was very patient.
Very professionals the salesperson was very patient. He took his time Did not rush me that’s why I bought the car there the Finance person was very nice and polite. No over pressure. I do not like being pressured. Thank you. It was very nice experience Sam Santoro.
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
I can’t say enough about the outstanding service at BMW
I can’t say enough about the outstanding service at BMW of Barrington, especially thanks to Justin in the service department. He always goes above and beyond to take care of us. Justin is professional, responsive, and truly committed to making sure everything is handled quickly and correctly. No matter the situation, I know I can count on him to provide updates, answer questions, and ensure the work is done right the first time. It’s rare to find someone so dedicated to their customers, and Justin has made every experience stress-free and enjoyable. Thank you, BMW of Barrington, and especially Justin, for always delivering such an exceptional level of care and service!
Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Jackie was great!
Jackie was great! She was helpful and knowledgable. She seemed interested in helping me find exactly what I was looking for. I would highly recommend her.
Used
2020 GMC Sierra 1500 Elevation
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Reviews
Perfect Vehicle, great salesperson!
My sales person Alex Valdez was great! I thought he would give up on me because I was very picky and expected alot. I had resigned myself to keeping my current car, but then he found me the perfect vehicle and I love it! All in all it was a pleasant experience and I highly recommend McGrath Honda/Elgin. Just ask for Alex Valdez and he will work hard to find you what you want!
Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Amazing as always!
Amazing as always! Paul and his team always take care of me and the process is efficient.
Used
2020 GMC Sierra 1500 Denali
Vehicle information
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Reviews
Lori was absolutely amazing!
Lori was absolutely amazing! She stood by her word in helping us when our concerns felt like they weren't being heard. I highly recommend her to anyone looking for assistance with challenging issues. We absolutely loved how she took care of us and she has made our experience in working with Woody Naperville excellent!
Used
2020 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
I purchase a 2019 Qx60 my experience was very very good
I purchase a 2019 Qx60 my experience was very very good sale person Thomas pates did a wonderful job to get me in this car everyone was helpful I will purchase another vehicle from there I am from Milwaukee thanks carwise
Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Most pleasant waiting room anywhere and the friendliest
Most pleasant waiting room anywhere and the friendliest service people.The mechanics always attempt to fix problems before they start. Also wait time ia always fair.
Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Brought my car in for regular maintenance and Gary made
Brought my car in for regular maintenance and Gary made the whole process really smooth. Everything was well organized, and once the service was done, he went over all the details with me. I was impressed with how easy it all was and would definitely recommend this place.
Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
We've worked with Tony before & he is very
We've worked with Tony before & he is very knowledgeable & knows just what we like.
Used
2020 GMC Sierra 1500 SLT
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Reviews
A salesman named Ron Assaf helped me.
A salesman named Ron Assaf helped me. I was looking for a used Car and I didn’t see the color I wanted so Ron asked me had I considered buying a new vehicle so he showed me a new Car and I walked out of that dealership with a new Car. Thanks Ron for all your help and service you gave me. You were Great.
Vehicle information
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Reviews
Eduardo was fantastic at Huntley Ford!
Eduardo was fantastic at Huntley Ford! He was patient and knowledgeable while helping me choose my new Ford F-150. Highly recommend!
Used
2020 GMC Sierra 1500 AT4
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Reviews
I reached out about a vehicle for my son.
I reached out about a vehicle for my son. Bailey was quick to respond and was able to answer my questions. She connected me with Alex, who was an incredible salesman. Alex went out of his way to accommodate our schedule. He was professional and kind through the entire process. I was impressed with the whole experience. Every staff member we engaged with was professional and courteous. There was no stress and no pressure. My son is happy with his purchase. If was personally in the market for a new or new to me vehicle, I would not hesitate to do business with them again.
Used
2020 GMC Sierra 1500 SLT
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Used
2020 GMC Sierra 1500 Denali
Vehicle information
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Reviews
We bought our new Acadia from Mike Rancharran at Gurnee
We bought our new Acadia from Mike Rancharran at Gurnee GMC, if you are looking to buy a car ask for Mike, he will do what he needs to do to get you a great car at a great price. What’s nice about the dealership is you deal with one person not 3 or 4, they are not pushy and if they don’t have what you are looking for they try to find the car you want. Thanks Mike !!
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Used
2020 GMC Sierra 1500 SLT
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Used
2020 GMC Sierra 1500 SLT
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Used
2020 GMC Sierra 1500 Elevation
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Used
2020 GMC Sierra 1500 AT4
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Used
2020 GMC Sierra 1500 Elevation
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Used
2020 GMC Sierra 1500 Elevation
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Used
2020 GMC Sierra 1500 Denali
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Used
2020 GMC Sierra 1500 SLT
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $60,539 | |
| 2025 GMC Sierra 1500 | $53,964 | 8 Great deals |
| 2024 GMC Sierra 1500 | $52,668 | 6 Great deals |
| 2023 GMC Sierra 1500 | $47,147 | 7 Great deals |
| 2022 GMC Sierra 1500 | $42,968 | 25 Good deals |
| 2021 GMC Sierra 1500 | $36,770 | 9 Great deals |
| 2019 GMC Sierra 1500 | $32,834 | 13 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 $35,791, with pricing starting at $16,988.
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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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.
