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Used
2023 GMC Sierra 1500 trucks
for sale
near
Boulder, 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
2023 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Lisaevelynsmith@gmail.com
My experience was very professional and l am very thankful l went to Johnson Auto Plaza in Brighton, Colorado. My salesman Mark was very pleasant throughout my buying experience. I will be recommending Johnson Auto Plaza to friends and family.
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
Kevin did a great job!
Kevin did a great job! We went in looking for a car that showed on the website that it was being delivered that week. He helped look up the vehicle and then also gave us other options for the same model that were already on the lot. We had a limited budget and he found a us a great option for a vehicle that was a lender that had been used by dealership. It had only a couple thousand miles and was in perfect condition. The financing agent was also very nice and found us a bank that would give us the lowest intrest rate for the loan. Kevin helped us set up our Chevrolet app and got us points for the purchase and the Onstar welcome call. They washed the car for us and filled up the gas tank. He went over the features in the car and let us do a test drive. I left extremely happy and love my new car!!
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 Denali
Vehicle information
Features
Reviews
I was here at the dealership a few months ago and I
I was here at the dealership a few months ago and I traded in my 2010 challenger on a 2014 challenger. The new one I purchased was an absolute gem. It only had about 600 miles on it. I thought “no way will this get approved” I’ll have to drive two hours back home without the new vehicle. Well I am pleased that I had Vincent and Kurt to help every step of the way. Between the two, they got me the best deal possible and I got exactly what I wanted. Never any pressure at all from anyone. The whole team there was exceptional to work with. I couldn’t have asked for a better car buying experience. Thank you to everyone. I definitely recommend going to Omeara. I will for sure be going back when I need to purchase another vehicle. Bill
"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
2023 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Annissa Medina has helped me so much taken care of
Annissa Medina has helped me so much taken care of everything for me and is always so sweet, understanding, and very helpful with everything that I’ve needed. Her communication skills and personality along with professionalism always reassure me that I am going to get the best service and make me feel like I am always welcomed.
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
2023 GMC Sierra 1500 SLE
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
Amazing Truck
Excellent comfort and very good truck, it is very functional in every way, both for business and for personal, it can be said that I have the 2.7L Turbo engine and I can move up to 11500Lbs already checked by me
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.
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Used
2023 GMC Sierra 1500 SLT
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Used
2023 GMC Sierra 1500 Elevation
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Certified
2023 GMC Sierra 1500 Elevation
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Used
2023 GMC Sierra 1500 SLE
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Used
2023 GMC Sierra 1500 AT4
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Used
2023 GMC Sierra 1500 Denali
Vehicle information
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Used
2023 GMC Sierra 1500 Denali
Vehicle information
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GMC Certified
2023 GMC Sierra 1500 Elevation
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Used
2023 GMC Sierra 1500 AT4X
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Used
2023 GMC Sierra 1500 Denali Ultimate
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $44,344 | |
2025 GMC Sierra 1500 | $41,504 | 5 Great deals |
2024 GMC Sierra 1500 | $37,987 | 19 Good deals |
2022 GMC Sierra 1500 | $30,866 | 13 Good deals |
2021 GMC Sierra 1500 | $27,991 | 14 Good deals |
2020 GMC Sierra 1500 | $24,999 | 15 Good deals |
2019 GMC Sierra 1500 | $20,999 | 4 Good deals |
2018 GMC Sierra 1500 | $19,371 | 6 Great deals |
*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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2023 GMC Sierra 1500 by city
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2023 GMC Sierra 1500 by body style
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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.