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Used
GMC cars
for sale
near
Port Byron, IL
under $40,000
- 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
2016 GMC Yukon XL Denali
Vehicle information
Features
Reviews
Great SUV
I love the Yukon. It needs a few censors changed out but it drives so smooth. Very glad we made the choice to purchase it






Used
2023 GMC Terrain SLT
Vehicle information
Features
Reviews
Absolutely seemless transition to our new Jeep Wrangler!
Absolutely seemless transition to our new Jeep Wrangler! Kurt did an amazing job helping us customize to get exactly what we wanted.
Love Our New 2023 Denali Terrain!
We purchased the Denali Terrain 2023. The car is great. I have had four knee surgeries and needed a car to get in and out easily and comfort seating. The controls for adjusting the seat just the way you like are great. I am troubled also by back problems and totally love the heated seat when needed. Sometimes I just want to ride around and turn the heat on and adjust seat so my back feels better. The different controls and are numerous. I love the safety control warnings and info with traffic. The screen is fabulous and helps so much. When ever I park I like to drive in and park and then hold on brake put it in reverse so the screen then comes on and shows how I parked. I like the levers in cargo area for putting seats down and also like how flat they sit. Plenty of room. The back seat is roomy even when person in front is back. Enjoy being up higher than a vehicle. I feel I can see more and it also makes me feel safer. The Terrain looks beautiful and love all the chrome in front. The car seems bumpy but not as bad as our last. The roads are in rough shape here. It has a lot of pick-up my husband demonstrated that to me and he wont be doing that again unless it is necessary. It is a turbo 4 cylinder and can not believe the power you feel. All in all Iove the car and getting good mileage. Purchased car from Boucher in Waukesha. They were not pushy. Explained everything in detail and were very fair. Great place to purchase!
Vehicle information
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Reviews
thank you Brain Magee, a job well done
Very friendly, took his time explaining all the settings on my new Buick Envisvion.Thank you Brian Magee for all your help, Gog knows I needed it. Will send friends to you when they need a new car.
Favorite car I have owned, to date!
The Yukon checked all of my needs, I have plenty of room for my children and my Great Danes. I enjoy driving the Yukon and how it handles, overall love this vehicle!
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Features
Reviews
Highly Recommend Key Auto employees ...knowlegable
Always treated with respect fairly and well. Last service told all how good I felt about how great I was treated. Good place to go for purchase and service.
Excellent
I've had mine for 4 years 2016 SLT ,traded my wife's Hyundai Santa Fe for a caddy srx which I drive as well as a 2018 GMC 1500. The Acadia has been super reliable .knock on wood.. just basic maintenance






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
We've had a great experience with Key Auto Mall GMC
We've had a great experience with Key Auto Mall GMC purchasing our new 2025 Acadia. Brian MacGee was wonderful to work with along with General Manager Theron Maring and all the other great staff. Brian especially has spent a lot of time going over all we need to know about how this car works and has several times answered more questions since we purchased the car a week ago. He helped us purchase new cargo mats and get the protective coatings on the car, inside and out. Brian has been professional, friendly, and so helpful to us. We highly recommend Brian and the Key Auto Mall GMC team and will definitely consider them for our next auto purchase.
2018 crew cab gmc Sierra 1500
Am in disbelief every week at the Gas Pumps. Thou a big truck, mileage per gallons are 18 +. Last week it was 22.8. This week 19.78.

Used
2022 GMC Terrain SLT
Vehicle information
Features
Reviews
Highly recommend for anyone looking for a new car.
Highly recommend for anyone looking for a new car. Great experience at Smart Kia in Davenport!
Love my GMC Terrain!
I fell in love with my GMC Terrain when I test drove it and have not lost that loving feeling! I have received tons of compliments on it.
Vehicle information
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Reviews
Found my Honda Accord 1,200 miles away!
Had an amazing experience working with QC Autoplex. I was an out-of-state buyer with many questions and concerns about the process of buying a car out-of-state. Scott was very responsive, very transparent about the process and vehicle, and very easy to work with. I believe the price of the car was fair and they went above and beyond to get it ready to be sold and to transport it for me. Even after I had received the car, Scott followed up with me to make sure I was happy. Definite five star experience. Thank you!
Good car only some issues
Have had lots of problems with the wheel sensors. New tires and new sensors and still have the same issue. Shows tire low and it is not. Just car not even two years the air conditioning would not blow out cold air. The compressor in the back went out, need to be replaced. Side car waring lights come on sometimes even though no car anywhere near me. Fold in mirrors are a joke the driver side comes in and out, however the passenger side sticks. Dealer said yeah that happens. This car is garage kept!
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Reviews
Thank you for getting this 75 year old her jeep
My salesperson was Kyle Johnson. He was courteous, knowledgeable and helpful. Will recommend him and the dealership. Everyone I encountered were professional and friendly with a smile of greeting.
Stylish and comfortable.
Just purchased this vehicle a little over a month ago. Love the ride, the comfort of the seats, and, the body style. My only complaint is that it drifts to the right and the steering wheel is several degrees to the left after two trips to the dealer where we purchased it. I will probably have to pay to take it to a known, excellent alignment shop.
Used
2017 GMC Savana 2500 Work Van
Vehicle information
Features
Reviews
Worth the trip!
Excellent experience. My husband and I saw a used vehicle online and drove from Burlington to see it. John at BMW was an excellent and personable salesman. He answered all our questions, was very patient, and very kind. He worked very hard to get us a deal we were happy with. Most of all, he made us laugh and treated us well. Not a pushy salesman, just a very nice man who treats people right. I’d definitely tell my friends going there is worth the trip and to ask for John. Not your typical salesman or car buying experience, he made it fun and easy.
Best Work Van out there
This van is just what I need for my business. Has the room I need for everything. Great gas mileage. I use it for my service calls and it does all I need it to do.
Used
2023 GMC Savana 2500 Work Van
Vehicle information
Features
Reviews
2017 GMC Sierra HD Truck
Rick Brown takes very good care of me when I bring my truck in for service! He is very professional and friendly! Their service department is highly recommended!
Used
2019 GMC Acadia Denali
Vehicle information
Features
Reviews
2023 Traverse Service
Their mechanic was very professional and was able to fix the problem I had with my Traverse. All of the employees were extremely nice/polite.
Its a decent car, but on a car frame.
Its a decent car, but on a car frame. I had a GMC Envoy a truck frame SUV and it was so much nicer to sit higher than the sedans and baby SUVs on the road. Doe have nice accelerations and mileage tho.
Used
2017 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
My car was in for service.
My car was in for service. Maddie called when it was ready for pick up, which was much sooner than expected. I appreciate the great friendly staff!
Good afternoon everyone, yes, I’m a lady and I’m an owner
Good afternoon everyone, yes, I’m a lady and I’m an owner of a 2017 GMC Sierra 1500 Denali, it has a V8 motor fully loaded sunroof & also it has heated seats & steering wheel for the cold winter months & in those hot summer months you have A/C seats nothing better than that am I correct? It’s been times like that wouldnt trade for the world!! So for all you ladies who think BIG TRUCKS are just for men, go out there & buy one have them put on some electronic slide in/out rails & go out & show the shows the boss!! lol 😄 I’m out looking for a new one now either a 2500/3500 pearl white
Vehicle information
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Reviews
We had an excellent experience, we will definitely go to
We had an excellent experience, we will definitely go to Clinton when purchasing our next car.
My 2020 GMC Canyon
Bought this truck for my new work truck. Smaller than my old Silverado but looks like it will be just fine. Gets really good gas mileage with the I4 motor.
Used
2023 GMC Savana 2500 Work Van
Vehicle information
Features
Reviews
I have used the service department at Courtesy Ford for
I have used the service department at Courtesy Ford for years. They are also great to work with and they do not try to gouge you with extra costs that you don't really need. I would recommend using them, the new GM is a great guy and makes sure customers are taken care of properly.
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Used
2022 GMC Sierra 1500 Denali
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2015 GMC Sierra 1500 Denali
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2015 GMC Sierra 1500 SLE
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Used
2021 GMC Sierra 1500 Elevation
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Used
2020 GMC Yukon Denali
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Used
2019 GMC Sierra 1500 AT4
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Used
2019 GMC Sierra 1500 SLT
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Used
2016 GMC Yukon Denali
Vehicle information
Features






Used
2019 GMC Sierra 1500 SLT
Vehicle information
Features
*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 GMC by price
GMC under $40,000 by city
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GMC under $40,000 in Port Byron, IL by model
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GMC Sierra 1500 under $40,000 in Port Byron, IL
1 Great Deal out of 26 listings starting at $16,900
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GMC Acadia under $40,000 in Port Byron, IL
2 Great Deals out of 24 listings starting at $9,598
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8 Great Deals out of 24 listings starting at $15,784
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