# 2015 GMC Sierra 3500HD SLT > Used 2015 GMC Sierra 3500HD SLT available at Austin's Auto Sales in Edgewood, WA. ## Vehicle Information - Year: 2015 - Make: GMC - Model: Sierra 3500HD - Trim: SLT - Condition: Used - Stock Number: 669438 - VIN: 1GT423C82FF669438 - Mileage: 103,934 miles - Exterior Color: Cobalt Blue Metallic - Interior Color: Jet Black - Body Style: Truck - Engine: Duramax 6.6L Diesel Turbo V8 397hp 765ft. lbs. - Transmission: Automatic - Drivetrain: 4x4 - Fuel Type: Diesel ## Pricing and Availability - Advertised Price: $37,951 - Availability: In Stock - Last Updated: 2026-10-16 00:16:24 Pricing and availability are subject to change. ## Features - Backup Camera - Bluetooth - Keyless Entry - Satellite Radio Ready - Automatic Climate Control - Leather Seats - Power Seats - Tow Package - Heated Seats - Fog Lights ## Aftermarket Parts & Accessories - Lifted ## Vehicle Description This 2015 GMC Sierra 3500HD SLT Crew Cab is a heavy-duty pickup built with the proportions and hardware expected in a one-ton truck. The Crew Cab body provides a full-size cabin with four doors and a practical amount of interior room, while the SLT trim places it among the better-equipped versions of the Sierra 3500HD line. Its design follows GMC's familiar truck styling, with a tall stance, a broad front end, and straightforward bodywork that reflects its work-oriented foundation. The exterior appearance is direct and functional, with details shaped by the demands of a truck intended for hauling, towing, and regular use. This truck includes Leather Seats, which give the cabin a more finished feel than cloth upholstery. The seating surfaces are arranged for everyday use and long drives alike, and the materials match the SLT designation. Power Seats are fitted as well, adding adjustment capability for the front occupants. Heated Seats are also part of the equipment list, and that feature is integrated without changing the straightforward character of the interior. The cabin keeps its focus on durability and usability, with controls and trim that align with a full-size pickup meant to handle frequent entry, exit, and time spent behind the wheel. This Sierra 3500HD SLT Crew Cab is equipped with Automatic Climate Control, allowing the temperature settings to be managed through the vehicle's climate system rather than by constant manual changes. Bluetooth is included, providing wireless connectivity within the cab for compatible devices. A Backup Camera is also present, giving the driver an added view when reversing. These items fit naturally into the truck's interior equipment and support day-to-day operation without adding unnecessary complexity. The cabin remains oriented toward practical use, with the available features grouped in a way that suits a truck of this class. This 2015 GMC Sierra 3500HD SLT Crew Cab brings the structural and mechanical presence expected from a heavy-duty pickup in the 3500HD series. The model line is designed for demanding tasks, and this example follows that purpose with a substantial frame, a large body, and the kind of proportions associated with serious truck use. Its interior appointments add comfort and convenience without moving away from that basic identity. The equipment listed here is straightforward and complete enough to serve as a clear description of what is present, with the truck's size and capability remaining central to its character. ## Dealership Information - Dealership: Austin's Auto Sales - Location: Austin's Auto Sales - Edgewood, WA, Edgewood, WA - Phone: (253) 256-7117 - [Location Details](https://www.austinsautosales.com/locations/austins-auto-sales-edgewood-wa): Address, phone, hours, and directions. ## Official Vehicle Listing https://www.austinsautosales.com/for-sale/2015-gmc-sierra-3500hd-slt-crew-cab_3377699725003281 The official vehicle listing is the authoritative source for current pricing and availability. ## Disclaimer A negotiable documentary service fee in an amount up to $200 may be added to the sale price or the capitalized cost.