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Used
2015 GMC Sierra 2500 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 2500 SLT
Vehicle information
Features
Reviews
Very satisfied with the service.
Very satisfied with the service. Would strongly recommend anyone here . Employers are very nice and helpful to the customers. I will definitely continue to bring my car for all repairs and refer my family and friends here.
Very beautiful truck
This truck would help me thru out my needs I and my family love this beautiful truck, there is no better place for me to shop than the Paso Robles Chevrolet I highly recommend them
Vehicle information
Features
Reviews
Best car buying experience EVER!
Best car buying experience EVER! Salesman (Brendan) was very helpful and absolutely no pressure. They were great to negotiate with and agreed on a very fair price for the vehicle. Paperwork with the business manager was quick and easy. This was just a great buying experience and we will definitely go to Fugate Ford again for any future vehicle purchases.
denali HD Duramax
everything i wanted in a vehicle, power ,comfort and the looks . great looking truck with lots of power . Diesel model of the denali HD
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Purchase was easy.
Purchase was easy. They treated me with respect and were upfront and honest about the history of the used car I was interested in. They trusted me with the test drive and told me to take all the time I needed. Very pleased with my experience.
Nice for what it is
Meets my needs. Plenty of power. Lots of room. Hauls and tows like a dream. Very nice and stylish truck considering that it is a W/T.
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
I stopped in for some urgent help in finding out how to
I stopped in for some urgent help in finding out how to use an overhead seat belt. Bob Bishop helped me understand how when I bought the used Honda. Needing to use this safety belt on Easter I tried in out and had problems with each step. I drove over this morning, April 3, 2026, and found help. Beside the helpful desk staff I was helped by Nathan and Curt with respect and efficiency. I wanted to give them credit for the time they spent with the problem and will feel much safer this Sunday. I thank each of you for your help. Rosella Ogg
Most dependable truck i ever owned.
This truck is a beast, but with the Duramax diesel engine, its fuel efficient as well. my best average is 21 mpg which is insane for a truck this size.
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Loved the Duramax Diesel and an incredible truck
Incredible truck. Wanted to trade it in for a 2020 same truck but unfortunately the interior for this year hasn't been updated. Supposed to next year. Will check in then. Would never consider a Ford or Dodge over this powerhouse.
Vehicle information
Features
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Great no stress car buying experience from the beginning
Great no stress car buying experience from the beginning to end. Happy with my experience.
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Great service, great experience, I am very happy.
I had a great experience. Ben Hooper was extremely helpful in getting me into the car i wanted. No high pressure or stress. He just made the process very simple, relaxed, and memorable. I would recommend this dealership to anyone looking for a vehicle and will come back when I am ready to purchase another vehicle.
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Excellent buying experience with a 2019 Volvo XC60.
Excellent buying experience with a 2019 Volvo XC60. TJ was awesome, friendly, and helpful. The deal was honest and transparent. I can highly recommend this dealership/brokerage to buy a car from.
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
I have been extremely impressed and amazed by the
I have been extremely impressed and amazed by the integrity demonstrated by Matt Tucker. The entire process of purchasing a vehicle was conducted remotely—from my home in Texas while Matt is in Alabama—via phone, text, and email. The transaction was seamless: the truck was shipped and arrived in perfect condition, and all title documentation was correct. What truly impressed me was the follow-through. A week after the sale was finalized, the truck developed a major mechanical issue. Without any haggling or avoidance ("not my problem"), Matt immediately took full responsibility and ensured the problem was resolved, simply by doing the right thing. I highly recommend his services and give this experience five stars, plus a few more if possible.
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Anthony Vassell was "entertaining, quick and to the
Anthony Vassell was "entertaining, quick and to the point." He made sure the car we bought didn't get sold while we drove 707 miles one way to purchase it We enjoyed working with him as he answered my questions promptly.
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
My purchase was worked through the great assistance of
My purchase was worked through the great assistance of Mr. Brendan Will, Auffenberg North/O?Fallon IL Sales Representative. Brendan was very knowledgeable and extremely helpful in answering all my key questions on the vehicles I was considering. I appreciated Brendan?s distinct expertise and insightful recommendations on various options, which made a big difference in making my final choice! Thanks Brendan!!!
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Today I bought a Honda pilot 2023 , I had an excellent
Today I bought a Honda pilot 2023 , I had an excellent experience with the sales man Alec olney is a wonderful and honest man , professional, transparent ,patient and took the time to explain every feature of the vehicle without ever making me feel rushed .he answered all my technical questions and made sure I was comfortable with the deal. Thank you Alec Olney
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Great experience
We had a great experience. The team was great to work with. Jack Pickrel worked with us and listened to what we wanted. Loved that it didn’t take all day!!
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Vehicle information
Features
Reviews
1970 Ford Torino
Out of state buyer, I purchased my 1970 Ford Torino. My sales person was Terry throughout the whole process. Not sure other buyers in past didn’t do their research before buying but overall this company and sales person Terry took care of me and worked with me. I hired a Mechanic to look at the vehicle we came to an agreement that satisfied both of us. Had my car delivered and was very pleased with my purchase. Thank you so much. I’ve been waiting so long to get my old car and relive my past!
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
My car was delivered and I love it The color outside
My car was delivered and I love it The color outside and inside are beautiful
Used
2015 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Marcus was friendy, professional, and knowledgeable.
Marcus was friendy, professional, and knowledgeable. He made our car buying experience great. Thanks Marcus!
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GMC Sierra 2500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 2500 SLT | 1 Good deal | |
| 2025 GMC Sierra 2500 SLT | $69,129 | 11 Great deals |
| 2024 GMC Sierra 2500 SLT | $62,278 | 7 Great deals |
| 2023 GMC Sierra 2500 SLT | $54,058 | 9 Great deals |
| 2022 GMC Sierra 2500 SLT | $48,637 | 7 Great deals |
| 2021 GMC Sierra 2500 SLT | $47,412 | 23 Good deals |
| 2020 GMC Sierra 2500 SLT | $43,269 | 7 Great deals |
| 2019 GMC Sierra 2500 SLT | $40,547 | 29 Good deals |
| 2018 GMC Sierra 2500 SLT | $38,491 | 26 Good deals |
| 2017 GMC Sierra 2500 SLT | $34,670 | 22 Good deals |
About the 2015 GMC Sierra 2500 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 2500 SLT cost?
The 2015 GMC Sierra 2500 SLT price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2015 Sierra 2500 SLT is $30,203, with pricing starting at $18,480.
What are some similar vehicles and competitors of the 2015 GMC Sierra 2500 SLT?
The 2015 GMC Sierra 2500 SLT compares to and/or competes against the following vehicles:
Is the 2015 GMC Sierra 2500 SLT reliable?
The 2015 GMC Sierra 2500 has an average reliability rating of 4.7 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2015 Sierra 2500 owners.
92% of drivers recommend this car
- Comfort
- 4.8
- Interior
- 4.8
- Performance
- 4.8
- Value
- 4.6
- Exterior
- 4.9
- Reliability
- 4.7
SLT (16 styles)
| Style | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4WD Crew Cab 167.7" SLT | 2WD Crew Cab 167.7" SLT | 4WD Crew Cab 167.7" SLT | 2WD Crew Cab 153.7" SLT | 4WD Crew Cab 153.7" SLT | 4WD Crew Cab 153.7" SLT | 2WD Crew Cab 167.7" SLT | 2WD Crew Cab 153.7" SLT | 4WD Double Cab 144.2" SLT | 4WD Double Cab 158.1" SLT | 2WD Double Cab 158.1" SLT | 4WD Double Cab 158.1" SLT | 2WD Double Cab 144.2" SLT | 2WD Double Cab 144.2" SLT | 2WD Double Cab 158.1" SLT | 4WD Double Cab 144.2" SLT |
| Inventory price | |||||||||||||||
| Starting at $51,415 | Starting at $45,895 | Starting at $49,020 | Starting at $48,100 | Starting at $51,220 | Starting at $48,825 | Starting at $48,290 | Starting at $45,705 | Starting at $46,705 | Starting at $46,900 | Starting at $43,750 | Starting at $49,295 | Starting at $45,950 | Starting at $43,555 | Starting at $46,145 | Starting at $49,100 |
| Combined MPG | |||||||||||||||
| 0 | 0 | 0 | 0 | 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) | 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 2500 trims
-
GMC Sierra 2500 2015 Denali
2 Great Deals out of 63 listings starting at $16,995
-
GMC Sierra 2500 2015 SLE
4 Great Deals out of 27 listings starting at $15,995
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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.