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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
The Customer Service representatives are great!
The Customer Service representatives are great! The mechanics are very knowledgeable and helpful. I feel very comfortable with my Audi TT in Fort Worth Audi?s hands. Blair Kellner
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
PROFESSIONAL GRADE.
PROFESSIONAL GRADE. All interactions, communications were easy and honest. I would recommend to family, friends and others
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
It always a pleasure to interact with the staff Mercedes
It always a pleasure to interact with the staff Mercedes Benz of Chicago. From sales to service, everyone is knowledgable and friendly. They make a trip to the service center stressless and friendly experience.
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
Dan Owen and the team at Murdock Chevrolet were fantastic
Dan Owen and the team at Murdock Chevrolet were fantastic in helping my daughter to buy a car. From initial contact via text, to the test drive, negotiations, financing, and detailing. They hit it out of the park. Thank you!!!
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
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.
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
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
BROKE DA SCALE PLAYA!
BROKE DA SCALE PLAYA! best experience loving the new car and I would definitely recommend Jarret to anyone looking to find their dream car :) I ended up finding something that fits my family perfectly
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
a day ago New Awesome experience all around my
a day ago New Awesome experience all around my salesperson, Brian Muñoz was amazing from first contact all the way to me driving off the lot. He had sent me videos of the car I was interested in, he walked me through the process of applying on the website to get pre approve, followed through with any concerns or questions I may have had, and he informed me of all the documents I needed to bring with me. I did not feel stressed during the process and it was a quick .
Vehicle information
Features
Reviews
Brandon was great through the whole process.
Brandon was great through the whole process. Hassle free and great customer service. thanks Brandon!!
Used
2015 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
The sales person was very helpful and knowledgable.
The sales person was very helpful and knowledgable. We reached an agreement quickly. A pleasant experience.
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GMC Sierra 3500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 3500 SLT | 2 Good deals | |
| 2025 GMC Sierra 3500 SLT | $69,677 | 9 Great deals |
| 2024 GMC Sierra 3500 SLT | $62,695 | 5 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 $35,179, with pricing starting at $26,995.
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
-
GMC Sierra 3500 2015 Denali
3 Great Deals out of 35 listings starting at $23,000
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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.