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Used
GMC cars
for sale
near
Longmont, 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 1500 AT4






Used
2024 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great Buying Experience
Look for Lindsay she made buying hassle free after a long day at work. Once I was in finance Leonel had the paperwork ready and it only took a few minutes to complete the sale.
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.






GMC Certified
2024 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Brad was the reason we bought - great salesman
We looked all over Colorado Springs, Boulder, and Denver for a 2022 Honda HRV. Markley Motors had one and although there were some snags to getting everything done smoothly, I cannot say enough about the customer service, honesty, and calm personality that Brad provided. I am so glad we came back to work with him and get the car we wanted. Brad "sealed the deal" with his knowledge, understanding, and willingness to make me feel comfortable that it was going work out to be what would be best for me. Thank you, Brad!! We appreciate you!
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
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
I inquired about a Camaro Convertible that had just
I inquired about a Camaro Convertible that had just arrived, Pablo replied and actually sug the car our if the snow and did a complete video walk around. Since I live 400 miles.away and this was exactly the car my wife wanted I was excited to have Pablo helping me. I asked him to look into the price and I had one more to call on. I called back the next morning got the price, made an offer. Unfortunately we where to far apart and the other car sold. My bad luck.
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 Yukon SLT
Vehicle information
Features
Reviews
Chelsey P I just bought my first car yesterday and I
Chelsey P I just bought my first car yesterday and I have to say it was an amazing experience. Seth McAlexander was the guy helping me and he was awesome he listened to everything I wanted and didn’t want. He also has amazing customer service. If you head over to Echopark definitely ask for Seth. Thank you so much for everything I love my new car!!!!
Buy one if you can afford it
Excellent and reliable, only thing buyers have to do is buy a AFM disabler that you can stick into OBD2 port to avoid lifter failure (longer story, nobody wants a V8 to run in V4)






Used
2024 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Great salesman and support staff!
The most important element of this dealership was the salesman. Joe Zielonko was super knowledgeable and a great fellow to work with. In my 6 decades of purchasing cars, Joe is in the top 5 percent. We felt very comfortable with Joe and we did not feel pressured. He listened very well to our needs. He is a credit to the organization.
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
2017 GMC Yukon Denali
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.
Reliable and comfortable.
I bought this 2017 Tahoe w LT trim new. Have 60K on it now and have had no issues with it. We are not towing with it or doing high speed racing so we find the 5.3L Motor is smooth and quiet (and have not had any lifter issues which others have reported). Transmission and suspension also smooth. We keep Michelins on all our vehicles and have found this Tahoe very quiet and comfortable for road trips with 4-6 people and luggage. The LT trim pkg deleted some comfort items I wish I had (like heated steering wheel) but it still is pretty much leather-and-loaded so it was a good value at the time. I have had Suburbans for 35yrs before purchasing this Tahoe and I will probably go back to a Suburban for the extra cargo space when I trade this Tahoe in. But this has been a nice and reliable vehicle for us. No complaints.






Used
2023 GMC Yukon Denali
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Features
Reviews
Very good experience with O’meara VW buying a nice used
Very good experience with O’meara VW buying a nice used Jetta. Quick fast deal without the usual back and forth time consuming runaround. Friendly courtesy call a couple days after to check on us. Thanks Karson, Elva and sales manager Steve. 👍👍






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Best Car Buying Experience EVER
I have bought a lot of vehicles in my life time but this was by far the easiest and most pleasurable car buying experience I have ever had. I sent an email to the dealership around 1:45pm to inquire about a car, drove to the dealership at 5:00pm and drove home at 7:30pm that same day. Ricky in sales was amazing, easy to deal with, I told him what I needed and he took care of it without a bat of an eye!! I will refer anyone to this dealership and specifically to Ricky Pim. Thank you guys!! you are the best! PS - Finance guy, equally as great!! Jersey!
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 AT4
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Features
Reviews
Awesome experience!
I was looking for a specific Ford Truck, a F350 Diesel. I found one on Cars.com that was at Interstate Ford. I live about 2 hours away from the dealership. I contacted Ryan Huber, one of the AMAZING sales reps there, by email. Ryan emailed me within minutes of my inquiry about the truck I saw and made an appointment with my that day to see the truck. Ryan was great! very low key, no nonsense, and helpful. not only did he show me the truck, he helped me through the purchase, financing, and final delivery, coming in on his day off so i could complete the purchase and pick up my NEW TRUCK! Thank you Ryan!! and Thank you Interstate Ford! You folks know about good customer service, valuing my time, and are extremely helpful and knowledgeable! Ryan, you are the best! if you need a new truck or car, Ryan is your guy!
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
2024 GMC Sierra 1500 Denali Ultimate
Vehicle information
Features
Reviews
Was a great experience.
Was a great experience. Everyone was very friendly and did not look down on us. Car was great. They went out of their way to make you feel like they cared.
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
2025 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I just wanted to thank Rob for getting me out of a
I just wanted to thank Rob for getting me out of a difficult jamb. My battery was failing, which required multiple jumps, and Rob was able to get me into service immediately even though his schedule was quite full. Rob had the battery replaced within 30 minutes of my arrival. I have never visited Fowler dealership in the past but will make it my go to place for future services.
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
Professional, honest, knowledgeable.
Professional, honest, knowledgeable. In and out quickly. TJ was great to work with. Highly recommend
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 AT4X
Vehicle information
Features
Reviews
Had a solid experience with them.
Had a solid experience with them. Kyle was more than helpful. He got us in and out in less than 2 hours. Great to work with Audi Flatirons.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Mr. Matt West is my salesman, he is very professional and
Mr. Matt West is my salesman, he is very professional and knowledgeable, I have very good experiences.
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.






GMC Certified
2022 GMC Yukon SLT
Vehicle information
Features
Reviews
New 2023 Yukon
Tom Medina was my salesman. We purchased a 2023 Yukon and was told it would take a few months to get. We stuck with him and he always keep us informed so we knew at all times how much longer it would take. The day came and very pleased we waited, love the Yukon, Markley Motors and Tom Medina & Jean-Paul Griffith.
Yukon Denali all new styling and pleasure to drive
Nice styling,interior has a new design dash which is beautiful and convenient,safety features and cameras are great and easy to used and the active cruise is awesome.






Used
2015 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Outstanding experience.
Outstanding experience. Christopher, our sales rep was incredible. This is our second Outlander we have purchased from him in under a year.
This truck is the base model and that is exactly what we
This truck is the base model and that is exactly what we were looking for. A good solid truck without all the fancy technology. It drives like a dream, handles just as well and the interior is sleek and well designed. Perfect black on black exterior.... a man's truck.






Used
2015 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Great teamwork!
Zack was great to work with. He listened to what I needed and he worked with the finance department i cant recall the gentlemans name but he worked very hard to get me into a car. And I think I got a good deal! Definitely 5 stars for both of these gentlemen!
Failed transmission and full replacement
We have owned our GMC Sierra 1500 for approximately 9 years now. The only real disappointment with the vehicle is that we had to have a full transmission replacement Just after the 100k mile without any warning whatsoever. The truck now has 107k miles on it and now , again out of nowhere, we are experiencing slipping in the trans and the engine light is now flashing. Very disappointing since we are starting to feel uncertain about the reliability of the vehicle now. The truck itself is gorgeous and shows ZERO signs of its age, sporting new rims and tires and a lifted body and no rust on the body at all. We hope there are no major issues with the engine as the vehicle has always been maintained as needed and on time for regular servicing at the dealership.






Used
2011 GMC Sierra 1500 Work Truck
Vehicle information
Features
Reviews
Jhony and the entire staff were great!
Jhony and the entire staff were great! Negotiations were fair and transparent. We were in and out within a few hours trading our truck and left with a new Tahoe
I have had my 2011 GMC Sierra for a few years now, i love
I have had my 2011 GMC Sierra for a few years now, i love it. i have hauled multiple loads of wood with the truck loaded too the max and a small trailer loaded to the max. can definitely feel the weight but my truck never hesitates at all. Very impressed with the performance of these trucks. i have worked at a ford dealership for years, but ill always drive a GMC.






Used
2019 GMC Sierra 1500 SLT
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.
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
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Would Highly Recommend!
I just bought a used Jeep Grand Cherokee! and the staff was very negotiable. They weren't pushy or rushing. I would highly recommend this dealership.
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!
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 $14,398.
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 1715 great deals out of 14843 listings starting at $1,000.
Where can I find the most GMC deals?
The most GMC deals can be found near Broomfield, CO with 68 great deals out of 713 listings starting at $3,988.
*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 GMC by price
- GMC for sale under $10,000 in Longmont, CO
- GMC for sale under $15,000 in Longmont, CO
- GMC for sale under $20,000 in Longmont, CO
- GMC for sale under $25,000 in Longmont, CO
- GMC for sale under $30,000 in Longmont, CO
- GMC for sale under $40,000 in Longmont, CO
- GMC for sale under $50,000 in Longmont, CO
- GMC for sale under $100,000 in Longmont, CO
Used GMC by city
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Used GMC in Niwot, CO
47 Great Deals out of 481 listings starting at $3,988
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Used GMC in Mead, CO
47 Great Deals out of 422 listings
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Used GMC in Firestone, CO
50 Great Deals out of 464 listings
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Used GMC in Frederick, CO
48 Great Deals out of 541 listings
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Used GMC in Gunbarrel, CO
46 Great Deals out of 504 listings starting at $3,988
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Used GMC in Erie, CO
66 Great Deals out of 713 listings
-
Used GMC in Lyons, CO
45 Great Deals out of 365 listings starting at $4,995
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Used GMC in Berthoud, CO
45 Great Deals out of 385 listings
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Used GMC in Altona, CO
37 Great Deals out of 418 listings starting at $3,988
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Used GMC in Dacono, CO
60 Great Deals out of 603 listings
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Used GMC in Lafayette, CO
56 Great Deals out of 614 listings starting at $3,988
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Used GMC in Boulder, CO
47 Great Deals out of 524 listings starting at $3,988
Used GMC in Longmont, CO by model
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GMC Sierra 1500 in Longmont, CO
14 Great Deals out of 166 listings starting at $6,988
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GMC Sierra 2500 in Longmont, CO
9 Great Deals out of 60 listings starting at $9,997
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GMC Acadia in Longmont, CO
2 Great Deals out of 54 listings starting at $5,999
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GMC Terrain in Longmont, CO
10 Great Deals out of 50 listings starting at $7,800
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GMC Yukon in Longmont, CO
39 listings starting at $9,471
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GMC Yukon XL in Longmont, CO
5 Great Deals out of 35 listings starting at $12,169
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GMC Sierra 3500 in Longmont, CO
21 listings starting at $25,988
Used GMC by body style
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