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Used 2015 GMC Sierra 1500 for Sale

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2015 GMC
Sierra 1500

$23,998* 19K miles
CarMax Mechanicsburg
Free Transfer to your store - PA to VA
Free Transfer to your store - PA to VA
Key Features
Location: CarMax Mechanicsburg in Mechanicsburg, Pennsylvania 17050
Description: Used 2015 GMC Sierra 1500 SLE for sale - $23,998, 19,191 miles with Flex Fuel Vehicle, Bed Cover, Satellite Radio Ready, Rear View Camera, Front Seat Heaters, Bed Liner
Transmission: Automatic Color:Silver Interior Color: Black Average Vehicle Review: (4.929 reviews) Everything

2015 GMC
Sierra 1500

$29,998* 85K miles
CarMax Harrisonburg
$99 Transfer to your store - VA to VA
$99 Transfer to your store - VA to VA
Key Features
Location: CarMax Harrisonburg in Harrisonburg, Virginia 22801
Description: Used 2015 GMC Sierra 1500 SLT for sale - $29,998, 85,674 miles with 4WD/AWD, Leather Seats, BOSE Sound System, Satellite Radio Ready, Rear View Camera, Front Seat Heaters
Transmission: Automatic Color:Silver Interior Color: Gray Average Vehicle Review: (4.929 reviews) CarMax is second to none, they have the best vehicles and the best prices, this is my sixth vehicle I have bought from CarMax and have never been disappointed, thanks CarMax for keeping me on the road

About the 2015 GMC Sierra-1500

Vehicle Summary

If you do a lot of heavy hauling and towing, a full-size pickup truck like the 2015 GMC Sierra 1500 can really come in handy. And with this full-size truck, enjoying rugged performance doesn't mean sacrificing creature comforts. With several trims, bed lengths, cab sizes, and engine configurations to choose from, there's likely a 2015 Sierra 1500 model out there that suits your needs. Whether you're looking for something relatively simple like the base trim with its 4.3L V6 engine or prefer something with indulgent features like the top-tier Denali's built-in navigation system, heated/ventilated seats, and heated steering wheel—this truck has a lot to offer. 

Unless otherwise noted, information related to these featured vehicles comes from third-party sources, including manufacturer information. Product and company names may be trademarks™ or registered® trademarks of third-party entities. Use of them does not imply any affiliation with or endorsement by these entities.


Q: What is the towing capacity of the 2015 GMC Sierra 1500?

A: When properly equipped, the 2015 Sierra 1500 can tow up to 12,000 pounds.1

Q: What engine is in a 2015 GMC Sierra 1500?

A: A 4.3L V6 engine is standard on the 2015 Sierra 1500, although SLT and Denali trims are outfitted with a 5.3L V8. An optional 6.2L V8 is also optional on the SLT and Denali. 

Q: What kind of fuel economy does the 2015 GMC Sierra get?

A: Fuel economy can vary based on engine size and other factors. The 2015 Sierra 1500 base trim with 4.3L V6 engine, six-speed automatic transmission and front-wheel drive gets an EPA-estimated 18 mpg combined.2 Meanwhile, the 2015 Sierra 1500 SLT trim with 5.3L V8 engine, six-speed automatic transmission, and front-wheel drive gets an EPA-estimated 17 mpg combined.2

Q: How many people can the 2015 GMC Sierra 1500 seat?

A: The 2015 Sierra 1500 with crew cab can seat up to six people. 

Q: Does the 2015 GMC Sierra 1500 have a rearview camera?

A: A rearview camera is not standard equipment on the 2015 Sierra 1500, but it does come on the SLE trim and above. 

1Various factors may impact towing capacity, including weight of passengers, cargo, and options/accessories.

2Fuel economy figures are based on EPA estimates for when vehicle sold as new. Fuel economy may vary for reasons like driving conditions and vehicle history. Unless specified, figures are for vehicles equipped with an automatic transmission. See

Generation Overview

The 2015 GMC Sierra 1500 was released in the middle of this truck's third generation of production (2014-2018). When this generation debuted in 2014, it brought with it new upgrades like a revised suspension and additional driver-assistance features (like lane-departure, forward-collision warning, and more). 

GMC Sierra 1500 Engine Options

A 4.3L V6 engine at 285 hp is standard on the third-generation Sierra 1500, as is a six-speed automatic transmission and front-wheel drive. Four-wheel drive is optional on every trim. 

On the SLT and Denali trims, a more powerful 5.3L V8 engine at 355 hp is standard equipment, though this V8 engine is optional on other trims. Also optional on the SLT and Denali trim exclusively is a 6.2L V8 engine rated at 420 hp. 

GMC Sierra 1500 Cab and Bed Sizes

Three cab sizes are offered on the third-generation Sierra 1500. The standard cab is a regular cab with a single front bench seat, which can hold up to three passengers. Need more passenger space? Consider the double cab (which seats up to five) or the crew cab (which seats up to six and offers larger rear doors). 

Three bed lengths are available on the third-generation Sierra 1500: a five-foot-eight-inch short bed, a 6.5-foot standard bed, and an eight-foot long bed. 

GMC Sierra 1500 Trim Configurations

Which Sierra 1500 trim best suits your needs? Explore the main features of each trim to find out, keeping in mind that these are specific to the 2015 model. 

Base (2014-2018)

  • 17-inch steel wheels 
  • Chrome grille and bumpers 
  • Rubber floor covers 
  • Four-speaker sound system 
  • Power windows and locks 

SLE (2014-2018)

  • Tinted glass 
  • 17-inch stainless steel wheels 
  • Available OnStar® functionality with 4G LTE Wi-Fi capability (when activated)3 
  • Leather-wrapped steering wheel 

SLT (2014-2018)

  • 18-inch alloy wheels 
  • Chrome exterior trim accents 
  • Automatic dual-zone climate control 
  • Leather upholstery 
  • Heated front seats with power adjustment 

Z71 (2014)

  • These features are specific to the 2014 model: 
  • Upgraded shock absorbers 
  • Hill-descent control 
  • Cabin air cleaner 
  • Recovery hooks 

Denali (2015-2018)

  • 20-inch wheels 
  • Side-assist steps 
  • Built-in navigation system 
  • Heated and ventilated front seats 
  • Heated steering wheel 

3 OnStar features require activation and most require a paid OnStar plan to use. Wi-Fi hotspot functionality may also require an additional data plan. Limitations and restrictions apply. See for more information.

Reviews for 2015 GMC Sierra 1500

Overall Rating

5.0 out of 5(13 reviews)

Teenagers First Truck

get vehicle for first time teenager - gets great gas mileage, comfortable and we use it all the time to haul things.

- Michelle Pickett, 2015 GMC Sierra 1500

Reliable and a fair price!

- A P, 2015 GMC Sierra 1500

Great Truck

Its a well built truck that rides like a high priced car & is very quiet and comfortable to drive on long trips.

- Rod Stokes, 2015 GMC Sierra 1500

This price does not include tax, title, and tags. Additional fees may also apply depending on the state of purchase.