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New and used
2026 GMC Sierra 3500 SLT trucks
for sale
near me
- 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.
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Features
Reviews
Nick Pashos did an amazing job taking the time to make
Nick Pashos did an amazing job taking the time to make sure I was happy with my purchase. Michael Minner was great in finance with explaining all the details and working with me financially.
New
2026 GMC Sierra 3500 SLT
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Reviews
Very polite and nice salesman.
Very polite and nice salesman.Answered all my questions. and it hadn't been so far away from where I am living I probley would have test drove the 2017 Kia Sorento they had.
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Reviews
I live in Utah but recently bought an Escalade from
I live in Utah but recently bought an Escalade from Halladay Cadillac in Cheyenne and honestly, I was just super impressed with everyone. You can tell these guys know how to treat people right and run a solid, honest dealership. They picked me up at the Denver airport and drove me up to Cheyenne. After the sale, on my way home I noticed that the USB and HDMI ports in the vehicle did not work. It was unexpected, but the way they handled it really meant a lot. The repair wasn't cheap but they didn’t make excuses, they just took care of it and made things right. That kind of service is rare, and it meant a lot. It was clear they stood behind what they sold, and that goes a long way. I’d absolutely buy from them again and recommend them to anyone who wants to work with good people who actually care about doing the right thing. Special thanks to Bryon the salesman who was super helpful and never pushy and John the sales manager who was a pleasure to work with in getting the issue resolved after the purchase and Shawn Smith the GM for standing behind the sale and being willing to take care of it. If I could give more than 5 stars I would.
New
2026 GMC Sierra 3500 SLT
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My sales person at Castle Chevrolet was Tony Twall.
My sales person at Castle Chevrolet was Tony Twall. He was awesome to work with. He answered all my questions and was very knowledgeable. I have to say that this was the best vehicle buying experience I have ever had. My next purchase will be with the Castle dealership in McHenry IL and I will ask for Tony to be my sales person.
New
2026 GMC Sierra 3500 SLT
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Reviews
I I I I I I I I I I I I I I I I I I I I I I I I I I I I
I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I
New
2026 GMC Sierra 3500 SLT
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Reviews
Buying was stressful and vehicle was poorly detailed and
Buying was stressful and vehicle was poorly detailed and prepared. Was very hard to get extra set of keys.
New
2026 GMC Sierra 3500 SLT
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Drew was there from our first call until we went home
Drew was there from our first call until we went home with a new Chevy. He worked hard to get us where we needed to be financially. Explained everything we needed to know about the vehicle we purchased. Drew was also there for some follow up calls, very patient and kind. We will definitely return for our next vehicle
New
2026 GMC Sierra 3500 SLT
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I would like to say Rydell Chevrolet salesman and staff
I would like to say Rydell Chevrolet salesman and staff treat you very very well. They’re courteous and kind.. I drove over from Duluth to look at a couple vehicles and was treated Very well and you have a lot of nice used vehicles there in stock Scott Turner
New
2026 GMC Sierra 3500 SLT
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I received excellent service from the Sean in the service
I received excellent service from the Sean in the service department and I am very please with the new tires that were installed during my recent visit
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Mike Hawkes and his service department team are
Mike Hawkes and his service department team are outstanding. Not only did they go the extra mile to fix an issue with a used car purchased from the dealership (not a GMC), but the level of communication, attention to detail and timeliness were amazingly good. Thank you.
New
2026 GMC Sierra 3500 SLT
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Great experience and would recommend getting car serviced
Great experience and would recommend getting car serviced here. Got me in quick and helped fix my car in a reasonable time. Would come back.
New
2026 GMC Sierra 3500 SLT
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Have bought a 2018 Silverado and a 2025 trax 1RS.
Have bought a 2018 Silverado and a 2025 trax 1RS. Just had service to the Silverado and it was completed in a timely manner. The cost was a little high but what isn?t costing more now days.
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A very smooth and easy process.
A very smooth and easy process. Answered all my questions, explained everything, and I feel went out of their way to make a great experience purchasing my new vehicle.
New
2026 GMC Sierra 3500 SLT
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Super easy to shop, buy and drive away with my new
Super easy to shop, buy and drive away with my new Hummer. Everyone was so amazing and treated me like family. Not my first time buying but one of the best. Highly recommend.
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Everything was taken care of on my automobile.
Everything was taken care of on my automobile. In addition to servicing my vehicle, there was a recall on my auto and they took care of that also.
New
2026 GMC Sierra 3500 SLT
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Keri is OUTSTANDING.
Keri is OUTSTANDING. Listens to my requests, provides me with options, and then enacts my decisions. Does not change the plan without getting my approval first.
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Reviews
We've had a great experience with Key Auto Mall GMC
We've had a great experience with Key Auto Mall GMC purchasing our new 2025 Acadia. Brian MacGee was wonderful to work with along with General Manager Theron Maring and all the other great staff. Brian especially has spent a lot of time going over all we need to know about how this car works and has several times answered more questions since we purchased the car a week ago. He helped us purchase new cargo mats and get the protective coatings on the car, inside and out. Brian has been professional, friendly, and so helpful to us. We highly recommend Brian and the Key Auto Mall GMC team and will definitely consider them for our next auto purchase.
New
2026 GMC Sierra 3500 SLT
Vehicle information
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Reviews
Working with Drew at Briggs Nissan of Manhattan made the
Working with Drew at Briggs Nissan of Manhattan made the car-buying process remarkably smooth and stress-free. From our initial interaction, it was clear that this dealership operates differently—prioritizing genuine relationships over high-pressure sales tactics. Drew took the time to understand our needs and guide us toward the right vehicle, without ever making us feel rushed or pressured. In the end, we felt confident that we reached a fair and mutually beneficial agreement. Gabe in the finance department further reinforced the dealership’s commitment to a seamless experience, handling everything efficiently and transparently. If you’re looking for a dealership that values trust, respect, and long-term relationships, I highly recommend connecting with Drew at Briggs Nissan.
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I had a flat tire and Sierra Lopez made sure it was
I had a flat tire and Sierra Lopez made sure it was repaired quickly. Sierra is always friendly and professional. I know when I go to their service dept or sales dept, I will be taken care of.
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Sure!
Sure! Here’s a nice review you can "I had a great experience purchasing my new car from Randall Wilson at Mitchell Buick. Randal was knowledgeable about the various models and helped me find the vehicle that suited my needs and budget. The car I wanted was not on the lot and he searched and searched until he found the exact car I requested. What I appreciated most was his no-pressure approach. He took the time to answer all my questions and provided honest insights, which made the decision-making process much easier. The entire transaction was smooth, and I felt confident in my purchase. I highly recommend Randal to anyone looking for a new car. His professionalism and dedication to customer satisfaction truly set him apart. Thank you for making my car-buying experience so enjoyable!" --- Feel free to customize it with specific details!
GMC Sierra 3500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2025 GMC Sierra 3500 SLT | $69,684 | 5 Great deals |
| 2024 GMC Sierra 3500 SLT | $62,874 | 25 Good deals |
| 2019 GMC Sierra 3500 SLT | $45,655 | 16 Good deals |
About the 2026 GMC Sierra 3500 SLT
SLT shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Four Wheel Drive
- Combined MPG
- 0
- Transmission
- 10-Speed A/T
- Engine
- 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
How much does the 2026 GMC Sierra 3500 SLT cost?
The 2026 GMC Sierra 3500 SLT price depends on optional features. Prices typically start at $66,400.
What are some similar vehicles and competitors of the 2026 GMC Sierra 3500 SLT?
The 2026 GMC Sierra 3500 SLT compares to and/or competes against the following vehicles:
SLT (2 styles)
| Style | |
|---|---|
| 4WD Crew Cab 172" SLT | 4WD Crew Cab 159" SLT |
| Inventory price | |
| Starting at $66,600 | Starting at $66,400 |
| Combined MPG | |
| 0 | 0 |
| Engine | |
| 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
*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 3500 trims
-
GMC Sierra 3500 2026 Denali
1077 listings starting at $69,570
-
GMC Sierra 3500 2026 Pro
1 Great Deal out of 495 listings starting at $45,343
-
GMC Sierra 3500 2026 AT4
3 Great Deals out of 328 listings starting at $71,645
-
GMC Sierra 3500 2026 SLE
1 Great Deal out of 238 listings starting at $53,900
-
GMC Sierra 3500 2026 Denali Ultimate
216 listings starting at $88,745
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