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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.
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Used
GMC Sierra 1500 SLT
for sale
near
Firestone, 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
2018 GMC Sierra 1500 SLT
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.
2018 crew cab gmc Sierra 1500
Am in disbelief every week at the Gas Pumps. Thou a big truck, mileage per gallons are 18 +. Last week it was 22.8. This week 19.78.
Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I have been leasing vehicles from Stevinson for 9+ years
I have been leasing vehicles from Stevinson for 9+ years and from Tony Salazar to the entire service team, I have always had nothing but praise for the way Stevinson conducts business.
new owner of the gmc denali, 2018 6.2
handles and drives great, the electronics don't always work, mirrors don't always work, spray with wd 40, check engine light, EVAP culprit, auto nation has no luck with this, will drive it till the warrenty expires and its back to ford for me
Used
2016 GMC Sierra 1500 SLT
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
My 2016 GMC Sierra 1500 SLT All Terrain - Love it!
I've owned this GMC Sierra 1500 All Terrain since it was 8 months old. With the exception of two warranty issues (failing power brake vacuum pump and transmission electrical harness), I have been totally happy with this truck. Up until now, my 1996 Chevrolet K1500 Silverado with it's 5.7L Vortec engine was my favorite truck of all time, this GMC (5.3L LS engine, 8 speed automatice) has earned the top spot now of my all time favorite truck. It is comfortable to drive, and runs as good as the day I bought it over 5+ years ago. I've got 71.5K miles on it. My biggest issue is I wished it had the 6.2L engine for better towing capabilities. Other than that ... love this truck.
Vehicle information
Features
Reviews
Friendly service by Andrew, who set up the lease and gave
Friendly service by Andrew, who set up the lease and gave us a slightly better deal than the completion and Kailie helped us to sign in to the Hyundai app. Also the finance guy didn't try to sell us unnecessary updates only an extra protection that might come in handy and reduces cost at the end of the lease.
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
2023 GMC Sierra 1500 SLT
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
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
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great service and love my car!
Great service and love my car! Very professional and helpful in selection and all the paper work!
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
2019 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Very nice and friendly staff.
Very nice and friendly staff. Excellent service. Explain and answer customers FAQ . They have different models and deals for every customer what ever your style or your budget.
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 SLT
Vehicle information
Features
Reviews
Ask for Ray! He's amazing!
After a horrid experience at Greeley Subaru that has us audibly growling at every Subaru we see, we ended up at CarMax Loveland. We both worked with Ray, who is so sweet, chill, and fun to work with. We got my husband set up with a beautiful Kia Soul for the price we wanted. Ray put in for a transfer for the vehicle I wanted and sent my trade in to get appraised. CarMax gave me over $3k more for my car than Greeley Subaru was going to! Ray put up with my impatience over the next few days while my Jeep Renegade was brought up to Loveland (it takes a couple days so they can throughly inspect the vehicles). Ray answered all of my questions timely and professionally. I am telling everyone to go see Ray at CarMax. The business center people were all fun and pleasant to work with and seemed to enjoy working there. This was hands down the easiest, least stressful car buying experience we have ever had.
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
2018 GMC Sierra 1500 SLT
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%
best in class
My GMC Sierra is the best ride I have had in all the years that I have been driving. I started driving in 1977. I love my new Sierra.
Used
2016 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
I've had the truck a month, and so far so good!
It's exactly what I was looking for; used but not too used, low miles, good looking but not too many bells and whistles, and didn't need any work.
Used
2024 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
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
Used
2025 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Good Service and a Bonus
After finding a 2013 Mini on Cars.com, I messaged the dealer. They responded quickly. I booked an appointment and met with Tracy. She treated me well, and over the next 2 weeks I decided to buy the car. Though this is a Mazda dealership, they knew the car well. Even better, they told me how I could make my payments to reduce the interest I would pay on the vehicle. This was a real bonus, saving me thousands of dollars during the life of the loan. The day after I drove it home, it broke down. It would not start. I took it back to the dealer and they fixed it straight away. They did not even ask me to do any paperwork. It was a relay that happened to malfunction, and their guy that "talked Mini" fixed it.
Overall I am very happy with my new Truck.
Overall I am very happy with my new Truck. GMC however needs to address their software glitch where the display screen intermittently stops working or the audio cuts in and out. I keep hearing a software update is being worked on but that was a while ago?
Used
2023 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Ask for Rick
Helped a friend pick out and buy a truck at Red’s Auto & Truck. We worked with Rick Hawkins and he was refreshingly knowledgeable, professional, and polite.
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
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
We felt heard, respected and valued at AutoNation
We felt heard, respected and valued at AutoNation Chevrolet North. And that?s saying a lot coming from this Ford loving family! James, Joe and Braden made the car shopping experience fun and the buying was smooth. We will check their inventory first next time we need to buy a car for sure!
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
2014 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great experience with Berkenkotter Rastle Rock.
We had an excellent experience working with Dan & Wade on the purchase of our new vehicle. The sales team helped us through the process and were incredibly patient. Used vehicle prices are out of control and it's comforting to know there are car dealers that go the extra mile. I would rate our buying experience 10/10. We will be back when looking for another vehicle. Give them an opportunity to earn your business!
Great truck, solid engine, comfortable, smooth, and it
Great truck, solid engine, comfortable, smooth, and it handles great for such a large vehicle. Get one and enjoy miles of roadtrips with all you can tow or haul.
Used
2019 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Carlos at Super Auto was professional, patient, and easy
Carlos at Super Auto was professional, patient, and easy to work with. He addressed my concerns and showed me several cars without being pushy. I appreciated his approach.
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
2021 GMC Sierra 1500 SLT
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
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
2018 GMC Sierra 1500 SLT
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.
Better than my old truck
The truck has more features than I need. It is quiet and comfortable. it has plenty of power to pull a work trailer. Overall a nice truck
Used
2015 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Dont overpay for your next car!
Purchased a new Pathfinder from Fort Collins Nissan and the customer service was amazing and the vehicle has been great. I liked that they weren't charging 1000s over MSRP like most dealers (for just pure mark up). Thank you FCN!
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
2024 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
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.
*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 SLT by city
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10 Great Deals out of 61 listings starting at $15,954
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7 Great Deals out of 37 listings starting at $15,954
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4 Great Deals out of 30 listings starting at $15,954
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8 Great Deals out of 41 listings starting at $15,954
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GMC Sierra 1500 SLT in Milliken, CO
2 Great Deals out of 25 listings starting at $19,400
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3 Great Deals out of 25 listings starting at $19,400
GMC Sierra 1500 SLT by year
-
2026 GMC Sierra 1500 SLT
40 listings starting at $61,545
GMC Sierra 1500 by trim
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GMC Sierra 1500 Denali
4 Great Deals out of 57 listings starting at $19,988
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7 Great Deals out of 31 listings starting at $26,777
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GMC Sierra 1500 AT4
27 listings starting at $31,300
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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.
