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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
2015 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.
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
I had a great experience at the dealership.
I had a great experience at the dealership. The staff was very pleasant, helpful, and made everything smooth and easy. Their customer service was excellent, and I truly appreciated how welcoming and professional they were.
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
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Was a great experience, never having purchased a car in
Was a great experience, never having purchased a car in this manor before. Summit and in particular Ryan Soukup was great and handled everything. Made this the best car purchase I’ve ever had. Would highly recommend all to go through Ryan.
well put together vehicle
The truck met all my expectations and more so far. the engine is powerful and the ride is smooth. the interior is great and so are the things this truck has.
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
I started by applying for credit after the Salesmen James
I started by applying for credit after the Salesmen James Anderson all my annoying questions. He never skipped over a question but answered each question fully. This built trust as I had trouble at other dealerships with honest communication and even some questions ignored in hopes I wouldn’t ask again. I was approved but dragged my feet and thought about waiting and decided to reach out again and test drive mainly because I liked car and the honesty of James and never high pressure tactics or constant emails. Just if we can answer anything else for you let us know by the great fiancé dept as well. Upon entering I found this a nice surprise in that it was not a typical atmosphere that I’ve experienced the car lots. My father sold cars as a side job and he’s a lot was the only one I truly enjoyed until I came to this lot. They were laid-back professional, friendly, and completely upfront. I felt like I meant a friend that I haven’t seen for a while and the experience with the salesman and the finance department was so pleasant. I would recommend this dealership to anyone that’s had a bad experience at other dealerships, James is a great salesman and has many years of experience and the finance department started at the same time he did and they make a great pair and getting you into the vehicle that you want on your terms if possible. So needless to say, I waited about 10 days and decided to visit the lot test drive the car meet the salesman that have been helping me and drive away in my new Buick. If I ever want another car being a senior, I will go back to the same dealership.
Versatile and comfortable hauler
This SRW truck carries a slide-in truck camper and tows a boat when it's not a daily driver. The gas 6.0L is very capable to handle both and the truck is comfortable riding when not loaded down. Reliable engine and truck.
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Seat cover falling apart
Purchase went smooth however only had the vehicle, 2020 Explorer, for less than a month. Called the service department today as the drivers seat has a rip on the stitch line and Woodhouse South are not willing to repair the seat. Even purchased the premium warranty. Even has a transmission issues and they are not looking at that either. Why purchase a warranty if the dealership does not honor it. Would like a call from the owner of Woodhouse to resolve these issues.
Great truck
This is a very clean, serviced and useable truck. I "live" in my truck and needed reliability, but without the garish price of new. All my tools fit and it is very handsome interior and exterior.
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
The people there are great and super helpful, and honest
The people there are great and super helpful, and honest and their should be more dealerships like Del Sol Auto Sells. Overall great service and good cars. "Go take a visit, you will like it"
Most reliable truck
Best truck ever, will buy another one if I can afford it. Gmc 3500 hd with long bed . Everything a man need
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Dee Motors
Replaced rearview Mirror. The work was done on time and with friendly service.
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
They were very helpful and totally gave me as much
They were very helpful and totally gave me as much information about the vehicle needed. There location is just to far from where I live and the extra expense to fly and drive for two days to arrive back home just made it expensive for me. Thank You for your assistance.
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Thank you Southtowne Mitsubishi for making my new car
Thank you Southtowne Mitsubishi for making my new car purchase simple and easy! Everyone was fun to work with! Will definitely come back! Really enjoying my new Outlander Sport!
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Sales personnel was pleasant and gave answers that was
Sales personnel was pleasant and gave answers that was relevant to my concerns , positive experience , thank you for the reach out!!
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Mustang Convertible , EASY remote sale
Taylor Ford of Manteno set the bar across the board for a perfect remote experience. From the moment I reached out with a brief inquiry on their website and their sales people were not only responsive, but extremely kind. They assisted me with walking me through the entire process. It is very hard to buy a car sight unseen but the videos and information made it easy. They even went out of their way to make sure I was satisfied even AFTER my purchase . Driving it few days later. Absolutely LOVE my red convertible mustang. Good Experience guys, 5 Stars All Around+++++ Thanks Abbie and my Sales guy!
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
With Rachel and Lou, it is about customer service.
I have been going to RRR Auto for years now. They are a fantastic family and I trust them with all of my automotive needs. They are very honest and a pleasure to deal with. It is worth the trip!
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Having bought multiple cars from The Internet Car Lot, I
Having bought multiple cars from The Internet Car Lot, I can attest to their honesty and professionalism through the entire process. I have always been met with helpful employees who make the entire process seamless. The next time the need arises, I will definitely be returning.
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
PROFESSIONAL GRADE.
PROFESSIONAL GRADE. All interactions, communications were easy and honest. I would recommend to family, friends and others
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
By Far the most simple experience I have ever had buying
By Far the most simple experience I have ever had buying a vehicle. I will be recommending to my friends
Vehicle information
Features
Reviews
Amazing experience
The guys Kyle and miles were amazing got me a truck I could afford and worked with me. They are not typical dealers! Amazing to work with down to earth and nice as can be!
There are 20 matching cars close to your year range.
Used
2013 GMC Sierra 3500 SLT
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Certified
2017 GMC Sierra 3500 SLT
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2016 GMC Sierra 3500 SLT
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Used
2017 GMC Sierra 3500 SLT
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Used
2013 GMC Sierra 3500 SLT
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Used
2013 GMC Sierra 3500 SLT
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Used
2017 GMC Sierra 3500 SLT
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Used
2016 GMC Sierra 3500 SLT
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2014 GMC Sierra 3500 SLT
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Used
2017 GMC Sierra 3500 SLT
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Used
2016 GMC Sierra 3500 SLT
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Used
2013 GMC Sierra 3500 SLT
Vehicle information
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Used
2016 GMC Sierra 3500 SLT
Vehicle information
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Vehicle information
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Used
2017 GMC Sierra 3500 SLT
Vehicle information
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Used
2013 GMC Sierra 3500 SLT
Vehicle information
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Vehicle information
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Used
2016 GMC Sierra 3500 SLT
Vehicle information
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GMC Sierra 3500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 3500 SLT | 1 Good deal | |
| 2025 GMC Sierra 3500 SLT | $69,338 | 19 Good deals |
| 2024 GMC Sierra 3500 SLT | $62,654 | 26 Good deals |
| 2023 GMC Sierra 3500 SLT | $54,503 | 11 Great deals |
| 2022 GMC Sierra 3500 SLT | $51,704 | 7 Great deals |
About the 2015 GMC Sierra 3500 SLT
SLT shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Rear Wheel Drive
- Combined MPG
- 0
- Transmission
- 6-Speed A/T
- Engine
- 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability)
How much does the 2015 GMC Sierra 3500 SLT cost?
The 2015 GMC Sierra 3500 SLT price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2015 Sierra 3500 SLT is $33,627, with pricing starting at $23,985.
What are some similar vehicles and competitors of the 2015 GMC Sierra 3500 SLT?
The 2015 GMC Sierra 3500 SLT compares to and/or competes against the following vehicles:
Is the 2015 GMC Sierra 3500 SLT reliable?
The 2015 GMC Sierra 3500 has an average reliability rating of 4.6 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2015 Sierra 3500 owners.
92% of drivers recommend this car
- Comfort 4.6
- Interior 4.8
- Performance 4.7
- Value 4.5
- Exterior 4.7
- Reliability 4.6
SLT (12 styles)
| Style | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4WD Double Cab 158.1" SLT | 2WD Double Cab 158.1" SLT | 4WD Double Cab 158.1" SLT | 2WD Double Cab 158.1" SLT | 2WD Crew Cab 167.7" SLT | 4WD Crew Cab 167.7" SLT | 2WD Crew Cab 167.7" SLT | 4WD Crew Cab 153.7" SLT | 2WD Crew Cab 153.7" SLT | 2WD Crew Cab 153.7" SLT | 4WD Crew Cab 167.7" SLT | 4WD Crew Cab 153.7" SLT |
| Inventory price | |||||||||||
| Starting at $48,155 | Starting at $45,005 | Starting at $50,725 | Starting at $47,575 | Starting at $46,810 | Starting at $49,935 | Starting at $49,380 | Starting at $52,310 | Starting at $49,185 | Starting at $46,615 | Starting at $52,505 | Starting at $49,740 |
| Combined MPG | |||||||||||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Engine | |||||||||||
| 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) |
*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
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GMC Sierra 3500 2015 Denali
2 Great Deals out of 35 listings starting at $21,995
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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.
