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Used
GMC Sierra 1500 AT4
for sale
near
Denver, CO
- 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
Vehicle information
Features
Reviews
Super fast, excellent service.
Super fast, excellent service. The inspection was thorough, timely and very easy to understand. I would highly recommend the service department at Auto Nation Dodge Ram Broadway.
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
2023 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Service appointment was very prompt.
Service appointment was very prompt. Troubleshooting system to confirm was thorough and consistent. Very courteous service staff, and explanations were also thorough and legitimate. Very appreciative of the process.
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!






Vehicle information
Features
Reviews
Awesome prices, awesome staff, everybody was friendly and
Awesome prices, awesome staff, everybody was friendly and very helpful, was not rushed or pressured
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
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Sales and finance teams were extremely flexible and
Sales and finance teams were extremely flexible and attentive, listening to my concerns and working to find solutions. They supported 2 different test drives when I had a concern about a specific driving condition, being extremely flexible working around my schedule. Cam, Austin, and Alec worked together to provide answers to all of my questions regarding financing and extended warranties. When a last minute issue arose on a Friday afternoon, their maintenance department obtained the part and swapped it out on a Saturday morning to allow me to pickup the car that afternoon. Communication was excellent, receiving 2 status updates that morning.
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
thank you john
Great experience buying my Tahoe from Greenwood. JS made sure my first time experience with them went exceptionally well. I highly recommend GWA for all your automotive priorities.👍
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.






Vehicle information
Features
Reviews
Straight up
Easiest car deal I have ever done. I have and will recommend them to anyone. I will be back the next time I buy another truck. Thank you guys. It was worth the 2 hour drive.
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
Vehicle information
Reviews
Great sales
Everything went smoothly my sales agent was the best showed me everything I needed to know about my 2023 Ford Ranger. I would highly recommend them.
2021 GMC Sierra Denali
This is the nicest truck I have ever owned. Lots of features. Takes a while to learn what all it does but a really enjoyable vehicle.






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Good guys
Good guys, told me want I nned to know but found anothe model a little cleaner then what I was looking at. I would recommened them.
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
The team at Autonation West pulled together and handled
The team at Autonation West pulled together and handled a very unique deal I presented to them. Know that when push comes to shove the AW team truly negotiates fairly.
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
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Austin Ellenberg helped us find the exact Buick Enclave
Austin Ellenberg helped us find the exact Buick Enclave that we wanted. He was very nice to work with and patiently helped us understand all the new features on the 2025 car. His explanations of everything were excellent, and we appreciate his offer to talk with us again about any new questions that we come up with. We also appreciate that he had a new battery installed before we took possession of the car, since the previous extreme cold temperatures had run down the battery while the car was on the lot.
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
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
My service writer Ricky Lobato was-excellent, he got my
My service writer Ricky Lobato was-excellent, he got my vehicle in and back to me in less time than quoted which is extremely important to me. When it comes to service doing what is needed and time are most important!
Great Buy!
This truck is amazing. Turning heads all over as we tour the area. Those riding with is also enjoy the comforts and safety features. Great Buy!






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I have been having my car maintenance done at Auto Nation
I have been having my car maintenance done at Auto Nation since I purchased my car there. The service staff is great and the work done is timely and good quality.
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
2019 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Quick and easy the staff was amazing and lots of car to
Quick and easy the staff was amazing and lots of car to select from would recommend
Beautiful Truck
I bought a 2019 GMC Sierra Elevation. I traded in a FULLY loaded 2015 Sierra SLT, that I was really sad to see go, but the Elevation really sold me on styling and ride quality. I lost a couple high end bells and whistles, but the overall performance and look of the truck make up for it big time!






Used
2023 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Fantastic dealership
My experience was great from the time I walked in the door, Luke, Mike, and Kelley were fantastic from showing me what they had in my price range to helping me get approved and out the door with a vehicle. Will recommend them to friends and family 100%
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
2023 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Over-priced car.
Over-priced car. Sales person very persistent. Very far away from my residence. Not sure if I am interested or not. Have owned three other Mustangs already.
"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
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Very good experience made the process easy left with a
Very good experience made the process easy left with a new car all the workers are great!
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
2019 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great family owned dealership No tricks just good
Great family owned dealership No tricks just good vehicles Nice dogs too Would buy from them again
Most expensive auto I've ever owned.
Great performance, hard to clean, everything, I expected. Getting lots of compliments and head turning. Stomping with thee BIG DAWGS!!!! Good gas mileage on highway.






Used
2023 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Went above and beyond all expectations!
Went above and beyond all expectations! The team is very responsive and helpful, all of our questions were answered in a very professional manner. I would definitely recommend this place to anyone who asks.
Just wondering
Does anybody else’s truck just sit there after you put it drive? I have to bump the accelerator to have it go into gear. ??????????????????????????????????????????? ?????????????






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Rafeal was my contact there and he was great.
Rafeal was my contact there and he was great. He went above and beyond to communicate share photos and video and was very transparent. As a matter of fact the whole process and everyone was easy to work with. Not the dealer where sale and sale manager go back and forth to do some crazy negotiating. Open transparent and fair dealing. Rafeal was an advocate throughout and in and out with anew car well less than an hr after trade in paperwork






Used
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I live in another state and this was my first experience
I live in another state and this was my first experience buying a car without driving it first. Very pleased with my car. Thank you Ryan for all your help in making this happen. Service was amazing.
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.
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*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 Denver, CO
5 Great Deals out of 34 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Glendale, CO
5 Great Deals out of 33 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Derby, CO
5 Great Deals out of 32 listings starting at $28,500
-
GMC Sierra 1500 AT4 in North Washington, CO
5 Great Deals out of 32 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Holly Hills, CO
5 Great Deals out of 33 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Welby, CO
5 Great Deals out of 32 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Commerce City, CO
5 Great Deals out of 32 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Twin Lakes, CO
5 Great Deals out of 32 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Sherrelwood, CO
5 Great Deals out of 32 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Berkley, CO
5 Great Deals out of 32 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Aurora, CO
4 Great Deals out of 33 listings starting at $28,500
-
GMC Sierra 1500 AT4 in Cherry Hills Village, CO
4 Great Deals out of 32 listings starting at $28,500
GMC Sierra 1500 by trim
-
GMC Sierra 1500 Denali
3 Great Deals out of 66 listings starting at $25,988
-
GMC Sierra 1500 SLT
5 Great Deals out of 57 listings starting at $12,994
-
GMC Sierra 1500 AT4
5 Great Deals out of 34 listings starting at $28,500
-
GMC Sierra 1500 Elevation
6 Great Deals out of 31 listings starting at $26,777
-
GMC Sierra 1500 SLE
6 Great Deals out of 21 listings starting at $8,999
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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.