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Used
2020 GMC Sierra 1500 trucks
for sale
near
Grandwood Park, 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.






Vehicle information
Features
Reviews
Excellent experience with Doug and the whole team here!
Excellent experience with Doug and the whole team here! I knew what I wanted when I came in and they helped me find the right car at the right price! I would recommend them to anyone!
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 Elevation
Vehicle information
Features
Reviews
I have been dealing with Eddie Colville and Jim Mlady
I have been dealing with Eddie Colville and Jim Mlady Nissan for many years and always get a fantastic deal. Great sales experience and great service experience!!!
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
Vehicle information
Features
Reviews
As usual a 6 star job.
As usual a 6 star job. Unfortunately I do not know the name of the person who did the work. My car was ready when I was told it would be done. If I had needed a shuttle one would have been provided by a service driver or one from the pool of other great drivers.
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 Denali
Vehicle information
Features
Reviews
Bought a new Kia Seltos from Boucher Kia, and the sales
Bought a new Kia Seltos from Boucher Kia, and the sales and management folks with whom we dealth throughout the process were always respectful and as helpful as they could be. Did experience two significant frustrations, neither of which appears to be the fault of the dealership. The first was a 6+ month wait for the Seltos we ordered to be delivered. This kind of delay is on Kia, more than the dealership, so I don't fault them. The second frustration was that the 2WD version of the Seltos we ordered is apparently not something Kia gets a lot of orders for and thus is not something they want to produce very many of. The car Kia produced to fill our order and sent to the dealer was the 4WD version of what we ordered. The dealership apologized and gave us a discount off the higher 4WD price, but again the core problem was with the company. If Kia doesn't want to sell a 2WD version of this Seltos trim, their website should not offer it as an option. That said, so far we really like our new Seltos, and we give the Boucher dealership credit for working with us.
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
Mark McMurray did an excellent job, as well as the
Mark McMurray did an excellent job, as well as the service crew. He provided the necessary information to keep my vehicle safe and reliable.
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
Hoy vine a conwyay imports y me ayudaron muy bien para
Hoy vine a conwyay imports y me ayudaron muy bien para comprar una troca me ayudó marco es los recomiendo me ayudaron muy bien






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great experience
We stopped in looking for a car for my son. I had an idea of what I wanted to pay. They easily made it happen. He loves the car.






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Excellent customer service and great to work with!
Excellent customer service and great to work with! They even delivered my vehicle to me. Nick in sales is the best from start to finish!






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I had a great experience working with Toni the salesman,
I had a great experience working with Toni the salesman, he answered all of my questions. i bought a BMW x5 the other day, for a great price. there was a small ding that i notices afterwords (a very minor ding). He gave me bindis number (the service advisor) and they took care of it. Awesome dealership and I will be recommending to friends and family.






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
If I could give 6 star I would.
If I could give 6 star I would. For my first time buying a car everyone was incredibly kind and helpful. Shout out to Rony who helped me buy my car and answer all my questions. From the minute I walked in the door I was offered water, snacks and coffee. Since I was there during lunch they even gave me a plate of chicken! I previously had visited a different dealership who tried to bait and switch me, offering me a terrible deal and not honoring the sale prices listed on their website and over the phone. None of that happened here at Crystal Lake. The price listed over the phone was the price I received and they offered me a great rate on financing. During the test drive Rony was kind and showed me the different features of the car I was buying. During my time there they sold about 10 cars, which isn't surprising considering the kindness and the good prices they offered.






Used
2020 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Great service
This was a service related issue and I was treated like I was there most important customer by all if there staff! From the moment I drove in the service door, until I picked up my quickly repaired vehicle, like there were privalaged to help me with my all of my vehicle concerns.very satisfied with all of my service.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Bill was fantastic to work with!
Bill was fantastic to work with! Whole process took only a couple of hours and everyone was very helpful. Pricing was transparent and they worked with me to get me best interest rate possible.






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Chris does an outstanding job every time I visit.
Chris does an outstanding job every time I visit. He is very accommodating and always aware of my needs and my time. Only place I service all my vehicles (3) and drive 30 minutes even though there are 2 Chevy dealers much closer.






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Venicia was great solving all issues and serving was
Venicia was great solving all issues and serving was great! Highly recommend her as a service representative






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I have never been happier since I bought my Buick at The
I have never been happier since I bought my Buick at The dealership in Barrington Illinois Tim McIntyre was our salesman and Dave the manager Patrick in the finance department Went far above any expectation I had for any dealership we had been looking for a car for several months I’ve never bought a Buick It truly is The best car I have ever owned This dealership Made this purchase so enjoyable I recommend them to oeveryone






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Went in for oil change and tire rotation Prince took care
Went in for oil change and tire rotation Prince took care of it in a very friendly and professional way. I even got complementary car wash. Very happy customer! Thank you!!






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Very helpful with car purchase as well as car
Very helpful with car purchase as well as car service/maintenance. Tim was a great help.






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
As always Zeigler Toyota employees are very polite and
As always Zeigler Toyota employees are very polite and friendly. I am very pleased with every visit.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
We just leased our 12th and 13th Honda from Zeigler Honda
We just leased our 12th and 13th Honda from Zeigler Honda and wouldn’t go anywhere else! Salesman Josh and Finance manager Nick are simply the best to work with! 2 leased car deals completed and cars delivered in less than 24 hours with a great deal too! Thanks guys!
GMC Certified
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
The salesman, Mike, was great.
The salesman, Mike, was great. He was very attentive and knowledgeable. Their pricing was the best in the state. Making a deal was quick and seamless.
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $43,250 | |
2025 GMC Sierra 1500 | $34,900 | 2 Good deals |
2024 GMC Sierra 1500 | $33,995 | 16 Good deals |
2023 GMC Sierra 1500 | $29,999 | 15 Good deals |
2022 GMC Sierra 1500 | $31,998 | 16 Good deals |
2021 GMC Sierra 1500 | $32,750 | 10 Good deals |
2019 GMC Sierra 1500 | $18,499 | 7 Good deals |
2017 GMC Sierra 1500 | $12,995 | 4 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 $36,628, 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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2020 GMC Sierra 1500 by body style
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This vehicle is certified pre-owned, backed by a manufacturer warranty, and typically undergoes a rigorous multi-point inspection to ensure quality and reliability.
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.