2015 GMC Sierra 2500HD Review

Pros & Cons

  • Impressive hauling and towing capabilities
  • carries on predecessor's refined and quiet ride
  • strong diesel engine
  • available CNG fueling for regular V8
  • solid build quality.
  • Touchscreen interface can be slow to respond
  • telescoping steering column not available on base model.
List Price Range
$29,500 - $52,303

Used Sierra 2500HD for Sale
Select your model:
See all for sale

cash graphic with confetti

Get More For Your Trade-In

2015 GMC Sierra 2500HD appraisal values can range from $16,586 - $24,158.
Find out what your car is really worth in minutes.
See your car's value

Edmunds' Expert Review

With its considerable capabilities and comfortable nature, the 2015 GMC Sierra 2500HD is an excellent choice for a heavy-duty truck.

Vehicle overview

GMC has long been known as the dedicated truck division of General Motors. But pretty much everybody also knows that its vehicles are platform twins to various Chevrolets models, differing chiefly in styling and as such sharing the same strengths and weaknesses. Thus, the 2015 GMC Sierra 2500HD is very similar to the Chevy Silverado 2500HD. Nothing wrong with that, as it means there's plenty of good and not much bad to speak of with this rig. This year's fully redesigned Sierra brings new styling, a new double cab model (which slots in between the regular and crew cabs) and an improved cabin, both in terms of quality and features. Unchanged are the formidable powertrain options.

As with its Chevy cousin, the Sierra 2500HD neatly splits the difference between the 1500 light-duty pickup and the more capable 3500HD heavy-duty workhorse (which can be had in a dual-rear-wheel configuration). With potent power plants and a wide range of body styles, trim levels and options, the Sierra 2500HD can serve as anything from a basic work truck to a plush six-passenger tow vehicle for your luxury RV or horse trailer. With maximum hauling and towing capacities of 3,760 and 17,900 pounds, respectively, this Sierra should be able to handle most tasks with ease. And features such as integrated cruise control, automatic grade braking, trailer sway control and, on diesels, diesel exhaust braking, all help make towing smoother and easier.

Choosing among the mainstays in the heavy-duty pickup truck segment can be tough, but in a good way. They are all solid choices and probably all have quite a bit more capability than you'll ever likely need. As such, the 2015 Ford F-250 Super Duty and 2015 Ram 2500 are worth checking out as well. Still, you won't go wrong choosing the 2015 GMC Sierra 2500HD, as it earns our praise for its compliant ride, smooth powertrains, solid build quality and strong overall performance.

2015 GMC Sierra 2500HD models

The 2015 GMC Sierra 2500HD is offered in regular cab, double cab and crew cab body styles with a choice of two- or four-wheel drive. The regular cab is available only with a long bed (8 feet), while the double cab and crew cab models can be mated to either a standard bed (6.5 feet) or a long bed. Unlike its 3500 big brother, the Sierra 2500HD is not available with a dual-rear-wheel (DRW, or "dually") axle.

Trim levels start at the base Work Truck and climb to the SLE, SLT and range-topping Denali. The SLT trim is available only on the double and crew cabs, while the Denali is available only as a crew cab.

The Work Truck comes standard with chrome bumpers, 17-inch steel wheels, rubber floor covering, a choice of cloth or vinyl upholstery, a 40/20/40-split front bench with a fold-down center armrest, power door locks, cruise control, a tilt steering wheel, a 4.2-inch color display and a four- or six-speaker sound system with USB/iPod integration and an auxiliary audio jack.

Stepping up to the SLE adds alloy wheels, tinted rear windows, cargo box illumination, keyless entry, an automatic locking rear differential, a heavy-duty trailering package (with integrated trailer brake controller), a rearview camera, full power accessories, a leather-wrapped steering wheel, carpeting, an 8-inch touchscreen with the GMC IntelliLink interface, 4G LTE WiFi, smartphone integration, Bluetooth phone and audio connectivity, voice controls (cell phones and music), OnStar and an upgraded audio system with a CD player and satellite radio.

The SLT trim level further adds 18-inch alloy wheels, added chrome trim, foglights, power-folding mirrors, an upgraded tailgate, dual-zone automatic climate control, an auto-dimming rearview mirror, remote ignition, power-adjustable pedals, leather upholstery, eight-way power front seats (with power lumbar), heated front seats, driver memory settings, a rearview camera and a 110-volt power point.

On top of the SLT features, the Denali will get you more chrome exterior accents, chrome side steps, a spray-in bedliner, a power-sliding rear window with defogger, a locking tailgate, front and rear park assist, a navigation system, a Bose audio system, a configurable gauge cluster display, front bucket seats, ventilated front seats and a heated and telescoping steering wheel.

Some of the upper trims' extra standard features can be added to the lower trim levels as options. Other option highlights, depending on trim level, include 20-inch wheels, different axle ratios, a bed storage box, various tonneau covers, trailering mirrors, a sunroof, a Driver Alert package (includes front and rear parking sensors, lane departure warning, forward-collision alert and a safety alert driver seat) and a rear-seat entertainment system.

Also available is the Z71 Off-Road package, which includes 18-inch polished alloy wheels, hill descent control, skid plates, specially tuned shock absorbers, a different front stabilizer bar and unique styling tweaks. The Sierra All Terrain HD package (for 4WD SLE and SLT) bundles the Z71 package with aluminum underbody shields and special exterior graphics.

2015 Highlights

Redesigned for 2015, the GMC Sierra 2500HD offers an improved interior, updated styling, new safety features and a new double-cab body style.

Performance & mpg

A 6.0-liter V8 engine that produces 360 horsepower and 380 pound-feet of torque is standard, as is a six-speed automatic transmission. Buyers can add a bi-fuel option to this engine, allowing the truck to run on either gasoline or compressed natural gas (CNG). When operating with CNG, power output drops to 301 hp and 333 lb-ft of torque. An optional turbocharged 6.6-liter diesel V8, also paired to a six-speed automatic, produces 397 hp and 765 lb-ft of torque.

Rear-wheel drive is standard for all models, with four-wheel drive optional.

Properly equipped, a 2015 GMC Sierra 2500HD can haul up to 3,760 pounds of payload. It can tow up to 13,000 pounds with its standard ball hitch and 17,900 pounds with a fifth-wheel hitch. At the Edmunds test track, a Chevy Silverado 2500HD LTZ Crew Cab 4WD, which is very similar to a Sierra 2500HD SLT Crew Cab 4WD, sprinted from zero to 60 in just 6.6 seconds. That's impressively quick for a heavy-duty pickup, let alone one that's a crew cab with 4WD.


Standard safety features include antilock disc brakes, traction and stability control (with trailer sway control), front-seat side airbags and full-length side curtain airbags. Also standard is OnStar (includes automatic crash notification, on-demand roadside assistance, remote door unlocking, stolen-vehicle assistance and turn-by-turn navigation). Upper trims also include power-adjustable pedals, a rearview camera and front and rear parking sensors.

Optional safety equipment includes the Driver Alert package (includes lane-departure alert, forward-collision alert, safety alert seat and front and rear park assist).

During Edmunds' testing, the similar Silverado 2500HD LTZ Crew Cab 4WD came to a stop from 60 mph in 135 feet, which is about average for this segment.

The government gave the Sierra 2500HD regular cab and double cab models three out of five stars for overall crash protection, with just two stars for total frontal protection and five stars for total side-impact protection. The crew cab version did better, with four stars for overall crash protection, with four stars for total frontal protection and five stars for total side-impact protection.


The 2015 GMC Sierra 2500HD manages to provide a comfortable ride along with its strong work capacity, thanks to its stiff frame and a suspension that can not only handle higher loads but also smooth out rough roads. Compared to the Sierra 1500, there's a bit more road noise from the HD's beefier tires and wind noise from its larger mirrors, but overall the cabin is quite serene.

When towing a trailer, the strong diesel engine helps accelerate this big truck with authority. And while it's descending a grade, the exhaust brake also works with well-timed downshifts from the transmission to help out with vehicle stability. Also minimizing stress on long trips with a trailer in tow is the Sierra's cruise control system. Linked into the transmission calibration, it does a fine job of holding your target speed as downshifts happen more readily on descents, providing additional engine braking and keeping speed in check.

Around turns, the big truck's steering has a light, precise feel, and body roll is decently controlled. Tight maneuvering situations, such as when parking or negotiating a multi-point turn, can take a hefty amount of wheel turning. But this isn't unexpected from a heavy-duty pickup.


The overall quality and design of the Sierra 2500HD's cabin is noticeably improved over the previous generation's. Materials are of high quality, and the gauge cluster's crisp graphics are a snap to read day or night. The design is attractive, and top trim levels boast handsome accent stitching atop the dash. Frequently used controls, such as those for the radio's volume and tuning as well as those for adjusting the cabin's climate, are large and well-placed.

The central information display located between the tachometer and the speedometer is intuitive to navigate, and its graphics are simple and easily interpreted. On the center stack, both the 4.2- and 8-inch IntelliLink color infotainment displays feature sophisticated (and in some cases reconfigurable) graphics options. Unfortunately, IntelliLink can sometimes be slow to respond to your touch inputs.

The Sierra's front seats are amply sized, supportive and fairly comfortable. The lack of a telescoping steering wheel option in the base trim, however, may make it harder for some people to get an ideal driving position. In the crew cab, there's no need to call "shotgun," as the comfortable backseat is well-bolstered and angled appropriately for solid leg and back support. Although most of our staffers found the seats, front or rear, to be very accommodating, those of slighter builds may find them a bit too wide.

Consumer reviews

Read what other owners think about the Used 2015 GMC Sierra 2500HD.

Trending topics in reviews

Most helpful consumer reviews

Great Diesel Truck
SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A)
Bought this SLT model after trading in a 13 2500 HD Denali. Needed to pull a 16000 lb Fiver camper. This Pickup has extreme power and smooth shifting. Thought about getting a single rear tire toner till I realized the only difference was an extra leaf spring is all. I had automatic step sides that come down when you open the door and that made access in and out easy even the wife enjoys it. I have 13000 on it now. I guess I don't see any issue with the headlights seem the same although I did notice at the parts counter upgraded bulbs on the counter so maybe that fixed the issue. I especially like the bright lights in the side mirrors for backing up at night. No problems with the leather or accessories, I did get extended warranty just in case. mileage varies about 8 mph pulling the camper and 17 mpg on the highway not pulling town about 15. Seems like a great pickup more to come.
A. Simms,09/25/2018
Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A)
This is a 6.6 Duramax crew. There was not an option when writing a review. I bought this truck used with 44k miles on it in February 2018 from a private party. This is the nicest vehicle I have ever owned. I have no issues with the headlights so they either were replaced or people are over reacting. This is my daily driver and I average 17mpg. 9 miles to work and mostly in town driving. I love towing with this truck!!! We have a 25’ Travel trailer and it’s like it’s not even back there. I love the exhaust brake and tow button. I am trying to think of something I don’t like about it but it’s hard. The interior is awesome and the seats are comfy. We have taken a handful of road trips already and can’t wait to take more. It has every option except the heated steering wheel. I even have the remote start which is awesome!! I added oversized tires and wrapped the grille and mirrors. I also put a spray liner on both front and back bumper. The rest is stock. This is a beautiful truck inside and out. I get tons of compliments. I will be keeping this for many years.
Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A)
There is no drop-down option for the Duramax Diesel version. Traded in a 2014 Denali 1500 for the big boy. I love this truck. No car/truck is perfect but the Duramax is the best Diesel engine on the road IMO. Sometimes the radio is quirky when plugging in my iphone so I just stream over bluetooth. I've noticed that the power steering takes more arm strength when maneuvering tight spots, more-so than other truck brands. The headlights are a less than great and should be recalled. I am hoping the new headlights that come on the 2016s will be interchangeable. I love my truck. It turns a lot of heads.. especially mine!
2015 Sierra HD diesel
4dr Double Cab 4WD SB (6.0L 8cyl 6A)
So, yes. The SD card reader is pretty much useless. But all of the storage is amazing. The 6.6 is amazing along with the Allison transmission. I'm getting 17 in town and 20-21 on highway. Towing my tractor around is a breeze almost forget it's behind me. I did read the other reviews and the gap at the tailgate is real, and it does let a lot of dust in, However you can buy a seal kit for it. The safety features are cool. With the vibrating seats, lane departure detection, and back up camera, if you crash and it's your fault. It is actually your fault. bottom line I've owned a lot of vehicles, other than a minivan which I haven't owned but have been in and was amazed at the comfort and room this is the best and most useful vehicle you can get.

More about the 2015 GMC Sierra 2500HD

Used 2015 GMC Sierra 2500HD Overview

The Used 2015 GMC Sierra 2500HD is offered in the following submodels: Sierra 2500HD Crew Cab, Sierra 2500HD Regular Cab, Sierra 2500HD Double Cab. Available styles include Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A), SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A), SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A), SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A), SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A), SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A), SLT 4dr Double Cab 4WD SB (6.0L 8cyl 6A), SLE 4dr Double Cab 4WD LB (6.0L 8cyl 6A), SLE 4dr Double Cab 4WD SB (6.0L 8cyl 6A), 4dr Double Cab LB (6.0L 8cyl 6A), 4dr Double Cab SB (6.0L 8cyl 6A), 4dr Crew Cab 4WD SB (6.0L 8cyl 6A), 4dr Crew Cab 4WD LB (6.0L 8cyl 6A), 2dr Regular Cab LB (6.0L 8cyl 6A), SLE 4dr Double Cab LB (6.0L 8cyl 6A), SLE 4dr Double Cab SB (6.0L 8cyl 6A), SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A), 4dr Double Cab 4WD SB (6.0L 8cyl 6A), 4dr Double Cab 4WD LB (6.0L 8cyl 6A), SLT 4dr Crew Cab SB (6.0L 8cyl 6A), SLT 4dr Crew Cab LB (6.0L 8cyl 6A), 4dr Crew Cab SB (6.0L 8cyl 6A), 4dr Crew Cab LB (6.0L 8cyl 6A), SLE 4dr Crew Cab LB (6.0L 8cyl 6A), 2dr Regular Cab 4WD LB (6.0L 8cyl 6A), SLE 4dr Crew Cab SB (6.0L 8cyl 6A), Denali 4dr Crew Cab SB (6.0L 8cyl 6A), SLE 2dr Regular Cab LB (6.0L 8cyl 6A), SLT 4dr Double Cab SB (6.0L 8cyl 6A), and SLT 4dr Double Cab LB (6.0L 8cyl 6A). Pre-owned GMC Sierra 2500HD models are available with a 6.0 L-liter flex-fuel (FFV) engine, with output up to 360 hp, depending on engine type. The Used 2015 GMC Sierra 2500HD comes with four wheel drive. Available transmissions include: 6-speed automatic. The Used 2015 GMC Sierra 2500HD comes with a 3 yr./ 36000 mi. basic warranty, a 5 yr./ 100000 mi. roadside warranty, and a 5 yr./ 100000 mi. powertrain warranty.

What's a good price on a Used 2015 GMC Sierra 2500HD?

Price comparisons for Used 2015 GMC Sierra 2500HD trim styles:

  • The Used 2015 GMC Sierra 2500HD SLT is priced between $38,648 and$53,995 with odometer readings between 57626 and123677 miles.
  • The Used 2015 GMC Sierra 2500HD Denali is priced between $39,988 and$59,000 with odometer readings between 47916 and177617 miles.
  • The Used 2015 GMC Sierra 2500HD Base is priced between $15,406 and$29,500 with odometer readings between 124427 and185841 miles.
  • The Used 2015 GMC Sierra 2500HD SLE is priced between $29,988 and$36,999 with odometer readings between 115943 and173657 miles.

Shop with Edmunds for perks and special offers on used cars, trucks, and SUVs near Ashburn, VA. Doing so could save you hundreds or thousands of dollars. Edmunds also provides consumer-driven dealership sales and service reviews to help you make informed decisions about what cars to buy and where to buy them.

Which used 2015 GMC Sierra 2500HDS are available in my area?

Shop Edmunds' car, SUV, and truck listings of over 6 million vehicles to find a cheap new, used, or certified pre-owned (CPO) 2015 GMC Sierra 2500HD for sale near. There are currently 16 used and CPO 2015 Sierra 2500HDS listed for sale in your area, with list prices as low as $15,406 and mileage as low as 47916 miles. Simply research the type of car you're interested in and then select a used car from our massive database to find cheap prew-owned vehicles for sale near you. Once you have identified a used vehicle you're interested in, check the AutoCheck vehicle history reports, read dealer reviews, and find out what other owners paid for the Used 2015 GMC Sierra 2500HD.

Can't find a used 2015 GMC Sierra 2500HDs you want in your area? Consider a broader search.

Find a used GMC Sierra 2500HD for sale - 7 great deals out of 21 listings starting at $19,726.

Find a used GMC for sale - 2 great deals out of 5 listings starting at $23,700.

Find a used certified pre-owned GMC Sierra 2500HD for sale - 1 great deals out of 17 listings starting at $24,181.

Find a used certified pre-owned GMC for sale - 1 great deals out of 8 listings starting at $14,628.

Should I lease or buy a 2015 GMC Sierra 2500HD?

Is it better to lease or buy a car? Ask most people and they'll probably tell you that car buying is the way to go. And from a financial perspective, it's true, provided you're willing to make higher monthly payments, pay off the loan in full and keep the car for a few years. Leasing, on the other hand, can be a less expensive option on a month-to-month basis. It's also good if you're someone who likes to drive a new car every three years or so.

Check out GMC lease specials
Check out GMC Sierra 2500HD lease specials