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Used
GMC Sierra 3500 trucks
for sale
near
Milliken, 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
2025 GMC Sierra 3500 AT4
Vehicle information
Features
Reviews
Promasters
I have bought two promasters from these guys in a bout six months time. As a business owner I don't have much free time was able to get in touch with Jeff Hale and put the ball in his court. It was the easiest purchase iv made I spent maybe 1 hour each buy at the dealership just to shake hands sign pick up and out the door ! No hassle got what I wanted for the price I wanted even a little cheeper. Will keep my business here!
Used
2023 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great experience.
The staff was very friendly. They are low pressure and extremely helpful with all the questions I had. The sales guy I dealt with (Daniel) was great and I would definitely recommend anyone go see him.
Used
2022 GMC Sierra 3500 AT4
Vehicle information
Features
Reviews
So comfortable and easy to work with.
So comfortable and easy to work with. Felt like it was exchanged between someone I have known for a long time. Very accommodating with my schedule.
Love my GMC HD
I ordered a 2022 3500 SRW Pro LB Double cab 4x4 in silver metallic / blk cloth. Added preferred package; gooseneck pkg; X31; upgraded wheels; camper/Snowplow prep; black steps. Got the 6.6 gas L8T. No start/stop and runs on all 8 cylinders all the time. I Love this truck. Had Rams and Fords in past. This is my first GM truck. I am in my 50s so not a brand thing... just a great truck. It was delivered in June. Truck rides great, tows very well, reciever or gooseneck. Fuel mileage is outstanding! Especially for a 4x4 one ton. I get 16 to 18 highway when not towing. I was shocked by how well it did and impressed with towing mpg as well. I generally tow between 6 and 14,000 lbs. Loads include a Glacier bay catmaran boat, 30' camper, and 3 axle 25' gooseneck. Truck easily handles those loads. The L8T engine is smooth and powerful. The 6L90 Transmission functions perfectly. If something were to happen to this truck I would not hesitate to order an exact replacement. So far very satisfied. MSRP as ordered was $53,945.
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Was a great smooth experience!
Was a great smooth experience! Mike helped us out and gave us a great experience.
Great Diesel truck when emission sensors work
Great vehicle for pulling my fifth wheel RV which weighs around 20,000 pounds. This dually truck pulls the RV very nicely without any significant strain on the engine or the transmission. However, like all of today's diesel engines there are 4 different system of emissions on this truck. Each one of these emission systems has sensors associated with them. If one of these sensors goes bad the truck will not perform optimally and sometimes it will go into the limp mode. Unfortunately this is not unique to GMC trucks. All manufacturers are battling this system. Also, I have had to take the truck to the dealer for computer upgrades in order to improve performance. I wish these upgrades could be performed on line (through wifi or with my own phone service). It sure would make things a lot simpler and improve the through put of the dealers who are already strained because of the limited number of available diesel mechanics.
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Best in Fort Collins
Great experience. We've bought a lot of cars over the years and Dellenbach is the best in the business. Not your typical dealership. No pressure, good prices and really, really nice people. I would highly recommend.
Great car for work!!
Comfort, ease of driving, style, convenient for work and we LOVE the tailgate! Great for towing our heavy fifth wheel and our dogs are riding in style!!
Used
2022 GMC Sierra 3500 Denali
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
2024 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
2024 GMC 3500HD AT4
This review is for a two week old truck. I have been trying to get a 3500HD AT4, gas engine, 8 foot bed, 5th wheel prep, in blue for over a year (almost 2). My dealer finally received an allocation and I was off for the build!! However, when my build order was sent to me the color had defaulted to black (blue was discontinued for 2024) and the only way to change it was to cancel and start over.....so black it is!! The truck is gorgeous and much larger than I thought! I am pleased with both exterior styling and the 2024 interior refesh. My only complaint is the seats, they are a bit firm.....still comfy....but firm. The GM sunroof is small, so small I passed on the option. Mechanically this truck is a pretty sound design. Another 50hp for the 6.6L gas engine would be nice, but 401hp is pretty decent. A PTO offering in the up level trims would be nice, as would a larger/dual fuel tank option is needed (GM is the only one that doesn't offer one), and a factory level in the front, and while I am dreaming a front locking differential. GM could up thier paint game, when approaching 90k I expect better paint. Value wise it is as good if not better than the rest of the over priced trucks on the market. Rumor is 20K per unit on average goes to the UAW pension, that's why your 50k truck costs 70k. In closing I have zero regrets other than the color, but I needed it immediately so here I am.
Used
2022 GMC Sierra 3500 Denali
Vehicle information
Features
Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
bottit
no high pressure sales flew in from 550 miles away they picked me up checked pickup out and drove it bottit and came home with it 550 and no problem on the way home i .
An overall nice truck but for a person at my size(5,11)
An overall nice truck but for a person at my size(5,11) the mirrors and posts really block the view. My tinted windows really amplify the problem. The hood also takes a bit of room for a short person. Its a comfortable ride and works well in my line of work in excavation. The sound muffler in the hood makes you think something is wrong but apparently its not.
Used
2008 GMC Sierra 3500 SLT Crew Cab
Vehicle information
Features
Reviews
Corvette Service
Technicians are knowledgeable and trained on servicing my corvette. I get the same care I have observed at the Bowling Green, KY assembly plant.
Duramax is king
GM truck interior too small, drive train is very dependable. Fast like the sports car of trucks with independent front suspension.
Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Very honest / Best Dealership
Things were found in a vehicle I traded in (money), and I was called Instantly.
I have had to of these before and I drive the xxxx
Just what I was looking for and the price was right. The color was the same as the truck I traded in. We have purchased a bumper pull camper and now mountain passes will feel like flat roads!!
Used
2022 GMC Sierra 3500 AT4
Vehicle information
Features
Reviews
Customer service was great service department was great
Customer service was great service department was great the only complaint that I have is when I have an appointment for 1:30 and it is two and a half hours later when they get finished do not understand why it takes that long when you have an appointment
Used
2023 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Nice facility
The facility here is awesome- clean and big. They take great care of their cars and everyone was easy to work with. Very easy and honest
Used
2022 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
It was worth the drive from Silverthorne to remedy a
It was worth the drive from Silverthorne to remedy a situation with a used Lexus GX460 that I acquired from WCG. The sales personnel were helpful, courteous, and professional and instilled confidence in me to return for future product and to refer anybody to go there for new or used vehicles and service. Ryan in sales and manager Derek got it done promptly which ended up being a faulty tire causing vibration at high speed. Also an honorable mention to Raul! Thank you all. I enjoyed the return drive to Silverthorne.
Used
2021 GMC Sierra 3500 SLE
Vehicle information
Features
Reviews
Great experience!
Great experience! When I contacted Weld County Garage about a used vehicle, Sales Consultant Miguel Orozco provided exceptional service. Due to my 1.5-hour commute from the WCG location, Miguel provided photos and videos of the vehicle so I could be sure it was worth taking a full day off. I later learned that Miguel had come in on his day off to assist me, a gesture I genuinely appreciate. Having visited numerous dealers in my search, Weld County Garage stood out as the most helpful, professional, and customer-centric. They were not just interested in making a quick sale, but in understanding what I was looking for and finding the right vehicle that fit my needs and those of my family. Unlike many dealerships, WCG encouraged me to take the vehicle to my mechanic for a pre-sale diagnostic check, and all details listed on/about the vehicle were 100% correct. Like many, I have never had a pleasant experience purchasing a used car. However, thanks to Miguel and Craig, the entire process was painless and drama-free, instilling in me a newfound confidence in car buying -- especially with the right dealership staff. Thanks for a great experience, WCG!
Truck is a Solid vehicle overall.
Has a really Big feel to it. I currently use mine to pull gooseneck trailer. I haven't had a load yet that I couldn't pull. The downsides to this truck is to me I feel it could get better fuel mileage. Also I had trouble with #4 injector...dealership replaced it. Now my AC doesn't work all the time. Although it sounds like it's blowing it isn't.
Used
2016 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
sweet
Great Trucks! Owned quite a few and they never let me down and seem to hold their value. I will keep buying them for as long as I can.
Used
2023 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Erik Anaya made our buying experience a pleasure.
Erik Anaya made our buying experience a pleasure. Everyone was helpful and knowledgeable. They have a great inventory and we never felt pressured to buy a vehicle. They helps us pick out a vehicle that met our needs. I would highly recommend Weld County Garage.
Used
2020 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Johnson Auto Plaza - Brighton, CO
We were shopping for a new car. The whole process was a good experience from the beginning to the end. I would certainly buy from them again!
Great luxury ride with great pulling capabilities.
The Texas Edition combined with the X31 package and premium SLT makes a very nice combination. The Sierra 3500HD gives you a luxury interior and ride with all the capabilities of a great pulling truck. The Duramax is quiet yet powerful. It is no doubt the best of trucks for 2020.
Used
2015 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Easiest Pickup Purchase Yet!
Super knowledgeable staff. Easy to work with. Easy to talk to. No pressure what so ever. They work with your budget and get you the bottom dollar! Thanks again Country Truck and Auto!
Best truck I have ever owned.
Best truck I have ever owned. Used to tow a heavy RV. Wonderful comfortable ride. Highly recommended this truck. I drive it as my primary vehicle.
Used
2020 GMC Sierra 3500 AT4
Vehicle information
Features
Reviews
Really impressed with the performance
Nicest truck I have ever owned preforms great with my RV Truck is comfortable and still works great when you need it to preform. Ride is nice and very roomy for all that want to travel with me
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GMC Sierra 3500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 3500 | $79,861 | |
| 2025 GMC Sierra 3500 | $73,480 |
About the GMC Sierra 3500
How much does the GMC Sierra 3500 cost?
The GMC Sierra 3500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for the Sierra 3500 is $57,663, with pricing starting at $5,988.
What are some similar vehicles and competitors of the GMC Sierra 3500?
The GMC Sierra 3500 compares to and/or competes against the following vehicles:
What trim levels are available for the GMC Sierra 3500?
The GMC Sierra 3500 is available in the following trim levels:
What model years are available for the GMC Sierra 3500?
Available model years for GMC Sierra 3500 inventory range from 2007 to 2026.
*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 Sierra 3500 by price
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Used GMC Sierra 3500 by city
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GMC Sierra 3500 in Gilcrest, CO
6 Great Deals out of 32 listings starting at $14,980
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GMC Sierra 3500 in Johnstown, CO
6 Great Deals out of 31 listings starting at $14,980
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GMC Sierra 3500 in Platteville, CO
6 Great Deals out of 33 listings starting at $14,980
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GMC Sierra 3500 in Evans, CO
6 Great Deals out of 31 listings starting at $14,980
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GMC Sierra 3500 in La Salle, CO
6 Great Deals out of 31 listings starting at $14,980
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GMC Sierra 3500 in Greeley, CO
5 Great Deals out of 28 listings starting at $14,980
-
GMC Sierra 3500 in Mead, CO
6 Great Deals out of 33 listings starting at $14,980
-
GMC Sierra 3500 in Berthoud, CO
6 Great Deals out of 32 listings starting at $14,980
-
GMC Sierra 3500 in Windsor, CO
5 Great Deals out of 25 listings starting at $23,295
-
GMC Sierra 3500 in Firestone, CO
6 Great Deals out of 33 listings starting at $14,980
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GMC Sierra 3500 in Loveland, CO
5 Great Deals out of 25 listings starting at $23,295
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GMC Sierra 3500 in Severance, CO
5 Great Deals out of 23 listings starting at $23,295
Used GMC Sierra 3500 by body style
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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.
