Save your search and get notified when new inventory arrives.
Contact seller
Customize your budget
*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.
About your privacy: Cars.com is asking for your ZIP and credit rating because it helps us to make an educated guess at your sales tax and loan interest. These two factors can greatly change your monthly payment.
Used
GMC Sierra 1500 trucks
for sale
near
Union, 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 AT4
Used
2017 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
My sales person at Castle Chevrolet was Tony Twall.
My sales person at Castle Chevrolet was Tony Twall. He was awesome to work with. He answered all my questions and was very knowledgeable. I have to say that this was the best vehicle buying experience I have ever had. My next purchase will be with the Castle dealership in McHenry IL and I will ask for Tony to be my sales person.
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
Used
2014 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Just got my Mustang serviced for some recalls.
Just got my Mustang serviced for some recalls. This place was so on top of everything! Excellent communication, easy scheduling, speedy service. I’m very happy after experiencing terrible service at a different nearby Ford dealership.
Great truck, solid engine, comfortable, smooth, and it
Great truck, solid engine, comfortable, smooth, and it handles great for such a large vehicle. Get one and enjoy miles of roadtrips with all you can tow or haul.
Used
2018 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Very nice dealership, kind courtesy, and knowledgeable
Very nice dealership, kind courtesy, and knowledgeable people. Fair offers and good inventory, definitely willing to bend over backwards to earn your business. I would recommend.
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.
Vehicle information
Features
Reviews
Always kind, helpful and courteous.
Always kind, helpful and courteous. Stick to their appointments and let you know of any concerns your vehicle may have. Thank you for being so attentive.
This truck has a jerk when changing gears sometimes.
This truck has a jerk when changing gears sometimes. I enjoy the truck overall easy to handle and comfortable. Drive with ease sight is good when driving.
Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Courtesy and professional service by Bob Ott.
Courtesy and professional service by Bob Ott. Met all my needs and completed the service I came in for. The recommended addditional service was completed in a timely manner.
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!
Certified
2020 GMC Sierra 1500 Denali
Used
2025 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
The most amazing experience.
The most amazing experience. John pays such attention to detail. He is the most wonderful person to work with The service is exemplary because of him! I Cant not rave about his service high enough.
I bought this after going to the dealer just to look at
I bought this after going to the dealer just to look at colors. I had a 2016 Chevy 1500 LTZ that I loved. There was my down payment and took this Denali home. Only 2 options. Paint and moonroof. I thought my chevy with 3.42 gears was quick. This one goes with 3.23's. The ride is great. Fit and finish are perfect. My only complaint is this Bose/Apple play radio is not what the 2016 Bose was.
Used
2023 GMC Sierra 1500 Pro
Vehicle information
Features
Reviews
Recently bought a used car here.
Recently bought a used car here. Amir was awesome! He was very knowledgeable and helpful . He is an honest man and i recommend him highly . Everyone working there was so nice and went out of their way to help me . This dealership will be my place to go from now on!
I own a 2023 Sierra 1500 Elevation equipped with the 2.
I own a 2023 Sierra 1500 Elevation equipped with the 2.7L TurboMax, and it’s been outstanding. It currently has 23,000 flawless miles. I’ll admit, I was skeptical of the 2.7 at first, but I jumped in feet-first and have never looked back. Living in Colorado, I regularly tow a 5,000-pound travel trailer through the Rockies with zero performance issues. The truck pulls confidently, handles grades with ease, and still delivers impressive fuel economy—23–24 mpg on the highway and about 18 mpg in town. I couldn’t be happier with this setup. If there is a negative to mention, that would be that after three years of ownership, the black wheels havent grown on me, and Im beginning to hate em. :) Lastly, the mpg while towing drops to 9mpg which is similar to that of a V8. All said, its been a great truck. :)
Used
2025 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Tony Horton was my salesman.
Tony Horton was my salesman. I gave him a price range and somewhat of an idea of what I was looking for. He found the perfect vehicle for me! He did a great job working within my budget. Would recommend him and this dealership to anyone.
Overall I am very happy with my new Truck.
Overall I am very happy with my new Truck. GMC however needs to address their software glitch where the display screen intermittently stops working or the audio cuts in and out. I keep hearing a software update is being worked on but that was a while ago?
Used
2024 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Wonderful customer service, amazing financial people,
Wonderful customer service, amazing financial people, overall amazing experience! I’ll definitely be back again
Great truck to own.
Great truck to own. The 2023 GMC Sierra Denali with the 6.2L engine delivers excellent power, smooth performance, and a refined driving experience. The ride quality, interior comfort, and overall build quality are outstanding. I have had no issues whatsoever, and it has been a reliable, enjoyable vehicle from day one. I would highly recommend it to anyone looking for a premium full-size truck.
GMC Certified
2024 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Joe Aksamitowski does an incredible job in all aspects of
Joe Aksamitowski does an incredible job in all aspects of customer service from beginning to end for me and my family. In this case I needed a new transmission, a costly and lengthy process, and was allowed to have a loaner car free of charge for 7-8 days in December 2025. Joe kept me updated throughout the process. Despite the cost of almost $7K after allowable deductions, I was very satisfied with the outcome. He is tremendous with customer service. I have spent well over $400,000 at this dealership over the past 30 years through the 3-4 dealership changes on 8-9 new cars as well as R & M. What is consistent is great customer service. In addition, Roger Aguilera and Chris Capperelli are also great with customer service. Thank you. Lowell B. Raven, CPA
I love it the look the interior mine is a red one and it
I love it the look the interior mine is a red one and it looks so good and it’s my baby and it runs so good and the technology is off the chain
Used
2025 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Been open over 30 years.
Been open over 30 years. I literally have never bought a car anywhere else. I never will. Great family environment and no pressure.
I have the 1500 double cab with standard bed.
I have the 1500 double cab with standard bed. The reason I have this vehicle is I really like the 6.5 foot bed. The crew cab with same bed is just too long. The things I dislike about this model is that it only comes in the SLE model. For the 2025 that means the external mirrors do NOT have a power fold in and it does not have a seat memory for more that one driver. The power fold in for the mirrors is extremely important to me.
Used
2022 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Excellent service Professional service Quick
Excellent service Professional service Quick service Polite customer service Excellent customer communication Very detailed repairs
2022 GMC Sierra SLT 3.0 Duramax
My 2022 GMC Sierra 3.0 Duramax pickup truck is a good truck. I work on a farm and I also drive an hour to see my girlfriend. For the farm, it has excellent towing capability and for the hour long drive to go see my girlfriend, depending on the weather for traveling, I can get up to 35 miles to the gallon!
Used
2025 GMC Sierra 1500 Denali Ultimate
Vehicle information
Features
Reviews
Quick and easy!
Quick and easy! Recommending to everybody who need profesional service from beginning to end! Sasha
Used
2023 GMC Sierra 1500 Pro
Vehicle information
Features
Reviews
Awsome
Stong engine and smooth! Highly recommend for familys or someone who likes a smooth truck. Purchased new and have had zero issues since then. Love it!
Used
2025 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Good service thank you.
Good service thank you. Easy drop off and pick up. Good service thank you. Easy drop off and pick up. Thank you again. Good service thank you. Easy drop off and pick up.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
My wife and I experienced a serious overheating problem
My wife and I experienced a serious overheating problem in our Santa Fe while driving from our home in Kansas City to Chicago. We found Kunes Hyundai online and were blown away by the superior service they offered. Kyle served as our service advisor, and he went above and beyond to take care of us. He patiently explained the problem, told us they had to order a part, and promised the vehicle would be done by Tuesday. When I left the facility, Kyle said he was on the phone trying to work a little magic to get the part sooner. I don't know who he called or what he said, but he worked the magic. The part came on Monday, and they had the Santa Fe fixed and back to us a day ahead of schedule! That was tremendous. We were already sold on the Hyundai, but this experience reminded us again of why we are on our third vehicle. The level of customer care is off the charts at Hyundai. And Kyle is the best service advisor we've ever had. The repairs fixed the problem and got us safely back home to Kansas City. I would gladly recommend Kunes Hyundai without hesitation. They are a five-star dealership! Check them out. You won't be disappointed! Ray Pritchard Shawnee, Kansas
Brake Pad Monitor
2021 GMC sierra 1500, 5.3, crew cab 4x4, 21000 miles. brakepad monitor lites up. dealership says needs brakes and rotors in back. one mo. on warranty. our rural roads dirty up the monitor. Needs new monitor. brakes look great to me. No noises. dealer says parts on order GM strike. Can't replace myself cause of computer...
Used
2023 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Frank was friendly and helpful.
Frank was friendly and helpful. He look up my records to make sure I was not receiving and paying for unnecessary service. He provided a coupon.
Like the truck but also disappointed
Got the duramax diesel and getting 24 city and 32 highway is very good. Truck drives nice and is very comfortable. My 2 issues with this truck is the backup camera at night is useless (very dark) and interior lighting is not very good. You would have thought a 78k truck would have footwell lights, but it doesn’t.
Used
2019 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Brian at Marquardt service department was extremely
Brian at Marquardt service department was extremely helpful to get my car all ready for winter with a new set of tires. I appreciate having a great dealership near by to handle my car needs.
2019 Sierra SLT X31
I purchased a new 2019 SLT with the X1 package. It has the Red Quartz Tintcoat paint. I usually never leave reviews, but honestly this is the most comfortable, nicest loking truck I've owned , and I've ownwd alot of them. The only issues I've had was the brake software was flawed, took it to the dealer on recall and they installed a new software patch, Other then that I love the styling, performance and the interior is very nice. No regrets
Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Compré un carro muy bonito y muy amable el personal súper
Compré un carro muy bonito y muy amable el personal súper recomendable a todos
new owner of the gmc denali, 2018 6.2
handles and drives great, the electronics don't always work, mirrors don't always work, spray with wd 40, check engine light, EVAP culprit, auto nation has no luck with this, will drive it till the warrenty expires and its back to ford for me
Used
2018 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Zee was an absolute legend to deal with.
Zee was an absolute legend to deal with. He helped me get my dream car and provided clear, helpful information throughout the entire process. I’d highly recommend him to anyone looking for excellent service.
best in class
My GMC Sierra is the best ride I have had in all the years that I have been driving. I started driving in 1977. I love my new Sierra.
About the GMC Sierra 1500
What is the MPG of the GMC Sierra 1500?
The GMC Sierra 1500 with traditional internal combustion engine offers up to 18 MPG city and 24 MPG highway for a combined rating of 20 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 model year, trim, driving conditions, driving habits, vehicle maintenance, and other factors.
*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.
- ${price_badge()}
- ${ami_badge()}
- ${battery_badge()}${ev_report_link()}
- ${hot_car_badge()}
- ${award_badge()}
- ${cpo_badge()}
${price_badge_description}
${ami_badge_description}
The EV Battery Rating is based on this vehicle's current expected range relative to the vehicles expected range when new. ${battery_badge_text}
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.
