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 AT4
for sale
near
Third Lake, 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
2023 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.
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
2019 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great staff and service.
Great staff and service. The dealership seems very well run. You can tell by seeing happy employees.
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
Certified
2023 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great service
The staff is very friendly and helpful. They services my vehicle quickly and sent me a report with what the service check found and what they recommended
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
2023 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
THE BEST
Just bought an RDX spaceship from these guys. The absolute best car buying experience I have ever had. In more than 50 years. Sebastion, our salesman, was incredible. Spent an enormous amound of time explaining the car's thousands of features, and made all the settings, etc. he thought we would want. Even helped out the next day via facetime when we forgot how some of them worked. And then called AGAIN the next day to make sure we didn't have more questions!!! When's the last time that ever happenned to you? Elson, his manager? More of the same. No BS, no haggling, reasonable on every issue and request; cuts righ to the chase. Found out he jogs near our home and actually invited him to stop by for coffee. When has that ever happenned? Rashard? Continued the same great service. Looking for a car? These are the guys to see.
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
2022 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
SAM IS THE ONE U WANT TO TALK TO
Nothing much to say just talk to Sam.Very Profesional sales person highly recommend him, he didn't push me to run through hoops just showed results am greatful thank u Sam
Used
2023 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Both Tim & Zack have always been so helpful!
Both Tim & Zack have always been so helpful!! Always a cheerful greeting when coming into the garage to get service!!
"THE" GMC Truck!
I have a 2023 GMC Sierra 1500 Denali with the 3.0 Diesel engine. I have 20,000 miles on it at the time of writing this. Never owned a diesel before and now i don't think i will own another one without it. I LOVE the engine in this truck. Only complaint would be that it likes DEF fluid while towing so pick up some extra DEF before you head out to tow something. Put about 8K miles on it this summer without adding any DEF fluid. seems to use a little more in the winter or when towing. Very quiet for a deisel and the fuel economy is awesome. Driving 70 mph down the freeway this truck gets about 30mpg, Drive 55mph on regular highways and this truck gets almost 40mpg. All around driving for me is about 26mpg. I used to fill up twice a week with my gas motor and now only once a week. Wireless Apple Carplay works great and the voice texting and mapping is a big plus. I also have the new SuperCruise feature which is awesome. Get on the freeway and set the supercruise on and the truck drives itself until i get to my exit (about 28 miles from home to work). Bose stereo is out of this world and all the storage is great to. I have a swingout bed toolbox, aluminum roll up tonneau cover, Lighted black GMC front emblem, Gloss Black 22" wheels, All Black decals and my dual exhaust bezels are black as well. I rotate the tires and change the oil every 5,000 miles. Couldn't ask for a better truck. Might get the ultimate next time as that has the messaging seats which i kinda wish I had.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Eduardo gave me an amazing service at the dealership and
Eduardo gave me an amazing service at the dealership and helped me find a car.
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
2025 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
They really made this a smooth experience.
They really made this a smooth experience. Especially when it came to the actual purchase of the vehicle. We dealt with Nick as our sales person and he was great at communicating with us and insuring any needs or concerns were addressed.
Let me start by saying I have the AT4 model with the
Let me start by saying I have the AT4 model with the Duramax 3.0L diesel. I had a 2024 Elevation with the 5.3L V-8 that I bought to pull my 22’ camper. While the Elevation pulled my camper fine it drank the gas like it was on a binge. And with a 26 gallon gas tank it seemed I was filling up every couple of hours. After one trip to Nova Scotia I knew something had to change. I pulled my camper out west to Yellowstone and back through Arizona. It pulled like a champ and fillups were a lot more manageable. Even driving the speed limit out west I still got four to five mpg better than with the gasser. I liked the Elevation but I love the AT4. Way nicer ride and great handling. I get 30 per gallon of diesel on the highway if I drive the speed limit but I got it to tow with. I added a Titian replacement fuel tank so I have 43 gallons instead of the 26 it came with.
Certified
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
All the financial numbers where accurate and the staff
All the financial numbers where accurate and the staff was honest at the end of signing the paperwork When I came next day to sign the paperwork I was surprised that finance staff had even better interest rate than day before that we verbally agreed
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
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Nicest, best performing truck I've ever owned
My truck has a great appearance, inside and out. It is a pleasure to drive; and rides and performs great. It is the best truck I've ever owned.
Used
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great dealership, extremely knowledgeable staff and sales
Great dealership, extremely knowledgeable staff and sales department. My sales rep, Justin, was incredibly knowledgeable about cars, which I am not, so I really felt taken care of.
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.
Used
2022 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I really appreciate the straight-forward buying process I
I really appreciate the straight-forward buying process I found at Napleton Schaumburg GMC. Thank you to Yiannis for answering all my questions! Best- Mark
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.
Any reviews on this vehicle is not correct.
Any reviews on this vehicle is not correct. We are first owners and it’s been an excellent truck. We hate to see it go !
Used
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I want to say thanks for the hard work getting me into
I want to say thanks for the hard work getting me into the new car.
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
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I always love coming here for service.
I always love coming here for service. Carlos and team are all very friendly and thorough. They have always taken great care of my car and me.
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
2025 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I had the best experience buying my new Trax.
I had the best experience buying my new Trax. Craig Winger was absolutely amazing. He is very personable He was great about what I wanted and did not try to persuade me in any way. Just a great guy and you felt more like he was friend than a salesman. The whole Lynch family was great. Tom and Dan were great also. Just a great experience for buying a vehicle, the best I have ever had. Craig thank you I Love my New Blue Trax. Would totally recommend Lynch for your next vehicle purchase. 10 stars and more
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
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Excellent service and knowledgeable.
Excellent service and knowledgeable. They Found me the best Subaru for my needs and preferences. Listened to all my questions and Concerns. Extra care all around from sales rep. Greg, manager Noah and finance George. I will look forward to maintaining my Outback purchase with Castle Autoplex in McHenry, IL.
2024 GMC sierra 1500 duramax 3.
2024 GMC sierra 1500 duramax 3.0 is great truck. Great ride and great MPG. 100% recommend to any prospective buyer. Love the truck and how it perform.
Used
2022 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
My salesman Esad was great.
My salesman Esad was great. He was very knowledgeable. Everyone was very friendly and helpful.
Used
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Awesome service from Huntley ford and it's salesman Rob
Awesome service from Huntley ford and it's salesman Rob specifically. Huge selection makes car shopping in one place easy and convenient!
Looked at more expensive truck with less options, bought
Looked at more expensive truck with less options, bought the GMC SIERRA AT4 Turbo Diesel 6. I now only put fuel im once a month. And long distance trips are easier due to better fuel economy. One of my best investments ever.
Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Extremely professional and sleek process working with
Extremely professional and sleek process working with this dealership. You can tell they carefully pick employees that represent and uphold knowledge and professionalism. Was a very non stressful process and will definitely buy my next car here.
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.
-
Prev - 1
- 2
-
Next
*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.
GMC Sierra 1500 AT4 by city
-
GMC Sierra 1500 AT4 in Gages Lake, IL
3 Great Deals out of 37 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Grandwood Park, IL
2 Great Deals out of 34 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Grayslake, IL
3 Great Deals out of 37 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Venetian Village, IL
2 Great Deals out of 33 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Lindenhurst, IL
2 Great Deals out of 33 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Hainesville, IL
3 Great Deals out of 37 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Round Lake Beach, IL
2 Great Deals out of 33 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Gurnee, IL
2 Great Deals out of 33 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Round Lake Park, IL
3 Great Deals out of 38 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Round Lake Heights, IL
2 Great Deals out of 33 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Lake Villa, IL
2 Great Deals out of 33 listings starting at $32,995
-
GMC Sierra 1500 AT4 in Round Lake, IL
3 Great Deals out of 36 listings starting at $32,995
GMC Sierra 1500 AT4 by year
-
2026 GMC Sierra 1500 AT4
21 listings starting at $63,750
GMC Sierra 1500 by trim
-
GMC Sierra 1500 Denali
2 Great Deals out of 43 listings starting at $17,990
-
GMC Sierra 1500 Elevation
8 Great Deals out of 38 listings starting at $28,699
-
GMC Sierra 1500 SLT
10 Great Deals out of 38 listings starting at $14,995
- ${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.