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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 SLE 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 SLE
Vehicle information
Features
Reviews
Always kind, helpful and courteous.
Always kind, helpful and courteous. Stick to their appointments and let you know of any concerns your vehicle may have. Thank you for being so attentive.
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 SLE
Vehicle information
Features
Reviews
Great experience very easy to communicate with
My best experience ever purchasing a vehicle traded in and my new truck is excellent the staff is friendly and they do what they promised
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 SLE
Vehicle information
Features
Reviews
Have purchased a lot of different cars at different
Have purchased a lot of different cars at different dealers and the three I delt with there were great. Best experence ever. Derek , Adam, and Grant treated us like royalty. Purchased a 2025 Teguan for my grand daughter 11/14/25 and went back 11/15/25 and bought one for my wife. No presure sales and two the point , no haggle sales. I have probably purchased over 50 vehicles in my 78 year history and this is like sales should be. First time volkwagen purchases.
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.
Vehicle information
Features
Reviews
Awesome all around
Every department at Robertsons has knowledgeable employees that are extremely friendly and helpful. I have purchased multiple cars there and the process has been all around easy because of the employees. And the service department always gives updates if needed and has your vehicle done at the promised times
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 SLE
Vehicle information
Features
Reviews
I had my oil changed - booking appointment was easy - the
I had my oil changed - booking appointment was easy - the staff was pleasant and service was timely - waiting room was clean - all my questions were answered
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 SLE
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!!
Vehicle information
Features
Reviews
Very nice but I can't buy it at this time,they were very
Very nice but I can't buy it at this time,they were very helpful ,thank you Jimmie Brinegar
Vehicle information
Features
Reviews
tjruss@outlook.com
Pleasant experience - accommodating service and salesman pleasant to work with on purchase of used car.
Used
2015 GMC Sierra 3500 SLE
Vehicle information
Features
Reviews
felt very comfortable with John and his advice and
felt very comfortable with John and his advice and experience were very much appreciated. He showed me a few trucks i was interested in so i could find something that would fit my needs the best. truly appreciate everyone that is there including those that just greeted me at the front desk. they truly made the experience enjoyable, which is something i rarely say when purchasing a vehicle. Aloha, Tani
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GMC Sierra 3500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 3500 SLE | 1 Good deal | |
| 2025 GMC Sierra 3500 SLE | $56,921 | 2 Good deals |
| 2024 GMC Sierra 3500 SLE | $55,501 | 6 Great deals |
| 2023 GMC Sierra 3500 SLE | $48,097 | 8 Great deals |
| 2022 GMC Sierra 3500 SLE | $45,408 | 10 Good deals |
About the 2015 GMC Sierra 3500 SLE
SLE shown.
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear Wheel Drive
- Combined MPG
- 0
- Transmission
- 6-Speed A/T
- Engine
- 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel)
How much does the 2015 GMC Sierra 3500 SLE cost?
The 2015 GMC Sierra 3500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2015 Sierra 3500 SLE is $30,948, with pricing starting at $21,750.
What are some similar vehicles and competitors of the 2015 GMC Sierra 3500 SLE?
The 2015 GMC Sierra 3500 SLE compares to and/or competes against the following vehicles:
Is the 2015 GMC Sierra 3500 SLE 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
SLE (28 styles)
| Style | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2WD Reg Cab 162" WB, 83.58" CA SLE | 2WD Reg Cab 133.6" SLE | 2WD Reg Cab 133.6" SLE | 4WD Reg Cab 133.6" SLE | 4WD Reg Cab 133.6" SLE | 2WD Reg Cab 162" WB, 83.58" CA SLE | 4WD Reg Cab 137.5" WB, 59.06" CA SLE | 4WD Reg Cab 162" WB, 83.58" CA SLE | 2WD Reg Cab 137.5" WB, 59.06" CA SLE | 4WD Reg Cab 162" WB, 83.58" CA SLE | 2WD Reg Cab 137.5" WB, 59.06" CA SLE | 4WD Reg Cab 137.5" WB, 59.06" CA SLE | 4WD Double Cab 158.1" SLE | 2WD Double Cab 158.1" SLE | 4WD Double Cab 158.1" SLE | 2WD Double Cab 158.1" SLE | 4WD Crew Cab 153.7" SLE | 2WD Crew Cab 153.7" SLE | 2WD Crew Cab 171.5" WB, 59.06" CA SLE | 2WD Crew Cab 167.7" SLE | 2WD Crew Cab 167.7" SLE | 4WD Crew Cab 167.7" SLE | 4WD Crew Cab 171.5" WB, 59.06" CA SLE | 2WD Crew Cab 171.5" WB, 59.06" CA SLE | 4WD Crew Cab 167.7" SLE | 4WD Crew Cab 171.5" WB, 59.06" CA SLE | 2WD Crew Cab 153.7" SLE | 4WD Crew Cab 153.7" SLE |
| Inventory price | |||||||||||||||||||||||||||
| Starting at $35,705 | Starting at $36,780 | Starting at $38,970 | Starting at $42,100 | Starting at $39,910 | Starting at $37,495 | Starting at $40,455 | Starting at $38,835 | Starting at $35,535 | Starting at $40,625 | Starting at $37,325 | Starting at $38,665 | Starting at $45,970 | Starting at $42,720 | Starting at $43,980 | Starting at $40,730 | Starting at $47,475 | Starting at $44,365 | Starting at $40,525 | Starting at $44,560 | Starting at $42,570 | Starting at $47,670 | Starting at $43,635 | Starting at $42,115 | Starting at $45,680 | Starting at $45,225 | Starting at $42,375 | Starting at $45,485 |
| Combined MPG | |||||||||||||||||||||||||||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Engine | |||||||||||||||||||||||||||
| 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 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) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 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) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 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) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) | 322.0-hp, 6.0-liter, 8 Cylinder Engine (Gasoline Fuel) | 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
1 Great Deal out of 34 listings starting at $22,950
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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.
