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 trucks
for sale
near
Niwot, 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
2024 GMC Sierra EV Denali Edition 1












Used
2025 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Great Customer Service and Sales Team
They did a great job of helping me find the perfect pick up. Levi spent a lot of time helping me. A very good experience. After the sale, I had a small issue with the battery and they swapped it out for a new one, no questions asked. Great dealership!
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
2017 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Amazing!
Amazing! Always such great service. The staff is wonderful, so friendly and kind. I went for an oil change and they were so quick and efficient.
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
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Isaiah was very knowledgeable in all aspects of our
Isaiah was very knowledgeable in all aspects of our transaction. Very excited to enjoy our new Dodge Truck.
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
2024 GMC Sierra 1500 Pro
Vehicle information
Features
Reviews
Best Car Buying Experience Ever
I had the best car buying experience ever! Jacob was amazing from the time I called and spoke to him on the phone and met him in person. He found the perfect car for me! The finance department got the loan done quickly and was very straightforward and kind. In conclusion, Everyone was friendly, had my best interest in mind, and was very professional. I literally was in and out. Easy peezy!
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
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Another great service experience with Ryan facilitating
Another great service experience with Ryan facilitating all aspects perfectly. Everything went as planned and within the very reasonable timeframe quoted. Great job by everyone involved with friendly and courteous attention!
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
2022 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Everything went smoothly.
Everything went smoothly. The truck was clean and ready with no issues, in really nice condition. The salesmen were courteous and knowledgeable. The would buy from them again.
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
2024 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Awesome buying experience.
This is the best retail buying experience my wife and I have ever had. These guys worked their butts off for us and got a better car than we could find anywhere else. We will never go anywhere else.
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
2022 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Car buying
Today was a fabulous day I finally got my Bronco 2022. My sales person Kelly Frank made my dream come true. The experience was sweet and I would recommend Interstate Ford to buy your next car. From the General Manager, Sales Mangers, the employees my sales person Kelly Frank and the Finance Managers it was awesome ❤️❤️❤️Interstate Ford rocks❤️❤️❤️❤️❤️
Pleased that I made this purchase
Waiting for the Refreshed 2022 AT4 was well worth it! With all the manufacturing issues today, building and shipping was slow, but understandable. Love the truck and the features! Fit is perfect and quality is #1. Pricing was too high but all vehicles are running this way. You get what you pay for and this truck is perfect! I have owned many trucks and this by far is the best. The latest features are beyond most other makes and GM has thought this truck through from front to rear.






Used
2025 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Got a Subaru!
Paul helped me. He was kind, helpful, and not agressive like a car salesman. Angie in finance was great as well. It was a great, fast experience!






Used
2024 GMC Sierra 1500 Denali Ultimate
Vehicle information
Features
Reviews
?????????? I had an incredible experience at Loveland
?????????? I had an incredible experience at Loveland Ford, and it was all thanks to Eli Hodapp! From the moment I walked in, Eli made the car-buying process easy, comfortable, and even fun. He?s got a cool mohawk, a great vibe, and is one of the most approachable and down-to-earth salespeople I?ve ever met. Not only is he super knowledgeable about the vehicles and options, but he really takes the time to listen and make sure you?re getting exactly what you want. No pressure, just real conversation with someone who clearly loves what he does. The rest of the team was also fantastic?friendly, professional, and helpful every step of the way. I left feeling confident, happy, and genuinely cared for. If you?re in the market for a car, do yourself a favor and go see Eli. He?s the man!
Surprised myself and bought a GMC
I needed a new pickup and while I wanted a Ford F150 I could not find one set up how I wanted. When I did the Ford dealers didn't want to give what I felt my trade in was worth. I got what I wanted and got a great deal on a 2024 GMC Sierra 1500 Elevation. It is even set up better than the F150's I was looking for and at a better price. I'm very happy with my purchase.






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I worked with Seth Caldiero and he helped to make buying
I worked with Seth Caldiero and he helped to make buying experience very seamless and a low pressure event.
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
2023 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Joey was great service manager.
Joey was great service manager...car service correct and prompt...very positive experience. Car was returned clean and with a full service report. Highly recommend dealership.
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 Denali
Vehicle information
Features
Reviews
Super easy.
Super easy. In and out super quick. Definitely recommend Stevinsons They were very thorough with the suburbans its recalls. I?ve had my suburban serviced here a lot and they are great.
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 SLE
Vehicle information
Features
Reviews
Christopher Levasseur is phenomenal.
Christopher Levasseur is phenomenal. I will come back to buy from him moving forward. He's professional, personable, and remembers his people. Great people in the Service Center too! I've gotten two vehicles from here and they always remember me.
"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 SLE
Vehicle information
Features
Reviews
Prompt and quick My salesperson was respectful and
Prompt and quick My salesperson was respectful and fast to answer my questions about my purchase
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
2023 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Seamless experience
Amazing experience .super patient and no hassle team, completely transparent Charles and Rick took good care of us! I would go back there again with my next purchase
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
2024 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
My wonderful car buying experience
I was very pleased with the vehicle I was able to purchase at Grand Valley Auto Lakewood! I had less than perfect credit after being left carless in my divorce. My friends had recently purchased a car from Mike and Kelley and they assured me I would be treated honestly and fairly. I was very skeptical due to the fact that I had recently been taken advantage of on the purchase of my new TV. They listened to my wants and needs and I left in a car that I both loved and knew would do the job. I would definitely recommend and return for my next vehicle purchase!
Awesome trucks
I've only had this truck for a month and a half and have had no issues. The interior is just plain awesome. I really like the multi function tailgate on this truck, it's very handy loading stuff into the box and the step really helps when you want to climb into the bed. I really like the ride height on the new trucks better than the 2015 Denali I traded in to get this one.






Used
2023 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Elba y Jesús fueron lo máximo!
Elba y Jesús fueron lo máximo! Servicio fue excelente, muchas gracias por todo! Los recomiendo muchisimo :) 2020 Jeep Wrangler
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






Used
2024 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Kerry was awesome and provided me a great purchasing
Kerry was awesome and provided me a great purchasing experience. I would definitely recommend this place to anyone who is in the market for a new vehicle.






Used
2023 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Rafael H was very attentive to what we were looking for
Rafael H was very attentive to what we were looking for in a clean used diesel p up . His assistance in our purchase with our purchase was very good . professional, not pushy Gerald & Kay Schreiber
About GMC
What is the cheapest GMC vehicle available?
The GMC Acadia Limited is the cheapest available vehicle by average Cars.com listing price in GMC's lineup, with an average listing price of $13,942.
Which GMC vehicle has the best MPG?
The GMC Sierra 1500 Hybrid can reach up to 21 MPG city and 22 MPG highway for a combined rating of 22 MPG. The GMC Terrain with traditional internal combustion engine offers up to 26 MPG city and 30 MPG highway for a combined rating of 28 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.
Which GMC vehicle has the longest range?
The electric GMC Sierra EV can travel up to 440 miles on a single charge depending on electric motor and battery options.
EPA-estimated range is the distance, or predicted distance, a new plug-in vehicle will travel on electric power before its battery charge is exhausted. Actual range will vary depending on model year, driving conditions, driving habits, elevation changes, weather, accessory usage (lights, climate control), vehicle condition and other factors.
Which GMC vehicle has the most deals?
The GMC Sierra 1500 has the most available deals on Cars.com with 1781 great deals out of 15536 listings starting at $1,995.
Where can I find the most GMC deals?
The most GMC deals can be found near Todd Creek, CO with 59 great deals out of 470 listings starting at $8,498.
*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 Trucks by city
-
GMC Trucks in Gunbarrel, CO
42 Great Deals out of 315 listings starting at $8,800
-
GMC Trucks in Longmont, CO
43 Great Deals out of 320 listings starting at $8,800
-
GMC Trucks in Boulder, CO
38 Great Deals out of 317 listings starting at $8,498
-
GMC Trucks in Erie, CO
55 Great Deals out of 458 listings starting at $8,498
-
GMC Trucks in Altona, CO
36 Great Deals out of 276 listings starting at $8,800
-
GMC Trucks in Lafayette, CO
44 Great Deals out of 372 listings starting at $8,498
-
GMC Trucks in Paragon Estates, CO
41 Great Deals out of 362 listings starting at $8,498
-
GMC Trucks in Louisville, CO
45 Great Deals out of 380 listings starting at $8,498
-
GMC Trucks in Pine Brook Hill, CO
32 Great Deals out of 246 listings starting at $8,800
-
GMC Trucks in Lazy Acres, CO
31 Great Deals out of 244 listings starting at $8,800
-
GMC Trucks in Frederick, CO
47 Great Deals out of 384 listings starting at $8,800
-
GMC Trucks in Lyons, CO
37 Great Deals out of 251 listings starting at $8,800
GMC Trucks in Niwot, CO by model
-
GMC Sierra 1500 Trucks in Niwot, CO
28 Great Deals out of 214 listings starting at $8,999
-
GMC Sierra 2500 Trucks in Niwot, CO
6 Great Deals out of 60 listings starting at $9,777
-
GMC Canyon Trucks in Niwot, CO
5 Great Deals out of 29 listings starting at $8,800
-
GMC Sierra 3500 Trucks in Niwot, CO
3 Great Deals out of 26 listings starting at $21,963
- ${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}
Certified cars are manufacturer warrantied and typically go through a rigorous multi-point inspection.
This car is likely to sell soon based on the price, features, and condition.
${award_blurb}
${award_two_blurb}