Quiet cabin for a workhorse truck, even when diesel-equipped
Solid build quality and high-end feel
Cons
Some versions don't offer telescoping steering column
Thick roof pillars create large blind spots
What's new
All trims get standard rearview camera
Base trims get upgraded infotainment system
Denali models feature a new grille design
Part of the third Sierra generation introduced in 2014
All heavy-duty trucks are built to handle rigorous towing and hauling needs, especially for professionals in construction and agriculture trades. But they also come in handy for intrepid trailer-travelers and those with a fondness for destroyer-class watercraft. The 2018 GMC Sierra 3500HD, however, adds another layer of comfort and luxury to all these utility tasks, and it does so with rugged exterior design and cabin comforts that you're more likely to find in high-end SUVs. If you want to bask in comfort while breaking a sweat, this is the truck.
This Dark Slate GMC Sierra 3500HD SLT Dually with just 46,000 miles brings serious heavy-duty capability with premium comfort. Built for hauling and t...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT42XCY7JF279872 Stock: JF279872 Certified Pre-Owned: No Listed since: 07-22-2025
Available with two powerful engines and in several cab configurations, the 3500HD can be tailored to fit your priorities, whether interior space, cargo room or maximum towing capacity. The optional diesel engine generates 910 pound-feet of torque — about a third of what a 60-ton Abrams tank engine produces — so there's not much beyond its capabilities before entering the realm of commercial freight hauling.
Ford and Ram also make robust, luxury-trimmed pickups for extreme towing duties, but you'll likely find the 2018 GMC Sierra 3500HD just as appealing.
Edmunds' Expert Rating
Considerable capability and luxury features combine in the 2018 GMC Sierra 3500HD, a heavy-duty truck that can handle the biggest jobs in style. An optional diesel V8 gives the Sierra HD massive towing and hauling power, too.
Trim tested
Each vehicle typically comes in multiple versions that are fundamentally similar. The ratings in this review are based on our full test of the Chevrolet Silverado 3500HD (6.6-liter turbodiesel V8 | 6-speed automatic | 4WD). The Silverado and Sierra are mechanical twins, although the GMC features more upscale interior quality and appointments. Our observations still apply.
Driving
The optional 6.6-liter turbodiesel is an impressive engine that gives the 3500HD big towing numbers and impressive acceleration. Steering and braking are less impressive, but objectively this truck performs well by most standards that matter to truck buyers.
Acceleration
The 6.6-liter diesel makes massive torque and more than sufficient power, which give it a surge of acceleration off the line. Surprisingly, it goes from 0 to 60 mph in just 7.7 seconds. In-town acceleration is more reserved, but there's still plenty of power to get up to freeway speed.
Braking
The brake pedal feel is strong and consistent in everything other than full panic-stop scenarios. During Edmunds testing, we were able to press the pedal all the way to the floor, which is far from ideal. A 60-0 mph panic stop required 132 feet, about average in this class.
Steering
The steering is well-weighted, but it takes several full revolutions of the steering wheel to turn this rig. There isn't much of a connection between the steering wheel and the tires, but that didn't factor too heavily into our score since most vehicles in this class feel similar.
Handling
The big surprise is how well this gargantuan vehicle takes turns. There's minimal body roll around corners unless you're going way too fast. In parking lots and tight spaces, it maneuvers well enough for a dual rear-wheel setup, but this won't be your grocery-getter.
Drivability
The low-end torque gives plenty of off-the-line acceleration and shifts from the six-speed automatic are smooth even under full-throttle acceleration. The cruise control and the exhaust brake keep a good handle on the 3500's downhill speed. Out in the open country, this is a very drivable truck.
Off-road
There are several laser-focused full-size trucks with specific tires, suspension and clearances designed for going off-road. This 3500HD dually is not one of those trucks. Four-wheel drive will help with inclement weather, but the stiff suspension and sheer size limit its dirt-road capabilities.
Comfort
Overall comfort isn't the Sierra 3500's strong suit. Trucks in this size range aren't exactly bastions of comfort, but this one is particularly rough on the senses with a combo of stiff seats, lots of wind noise and a rigid suspension. A big payload, however, settles things down a lot.
Seat comfort
The front seats are well-padded and well-bolstered on the sides for lateral support, while the rear seats are relatively flat. The seat padding in both the front and rear is overly firm, though, and will take some serious breaking in to get comfortable.
Ride comfort
The stiff leaf-spring suspension means the 3500HD has a rigid, uncomfortable ride when unladen. Load it up with a heavy payload or a big trailer, though, and the ride quality is significantly better. We're giving the latter more weight because we assume a dually is unlikely to be an "air-hauler."
Noise & vibration
While there isn't as much road noise as you'd expect from the dual rear wheels, there is quite a bit of wind noise from the square front end and big mirrors. The diesel engine rumbles a bit, too, but it isn't particularly grating or abrasive and it's relatively smooth while cruising on the highway.
Climate control
The Silverado's climate system cools this big cabin quickly. The climate control knobs and vents are easy to control, even with gloves on, and the fan blows pretty quietly even at full blast. The heated split front seats are a great feature.
Interior
The interior is likable and user-friendly. Hop in and you'll operate almost all the controls without busting out the manual. It has a no-nonsense vibe, but that's not necessarily a bad thing in this segment.
Ease of use
The dashboard is about as basic and user-friendly as they come. The buttons are large and readable, within arm's reach and easy to operate. The solid switchgear contributes to ease of use.
Getting in/getting out
The proper grab handles and side steps help with entry, but it's still a tall truck. Most adults will have to do some climbing to get in. Keep in mind that this is pretty standard for the segment. It's not any harder to get in and out of the Sierra than any of its main rivals.
Driving position
The optional power-adjustable pedals, a tilt-and-telescoping steering wheel and a highly adjustable driver's seat mean you can pretty much get the position you want. As with most trucks this big, seating position may be a bit high for shorter drivers, but it isn't a deal-breaker.
Roominess
Pick any seating position in the 3500HD and you'll have plenty of room to spread out. Headroom, legroom, shoulder room are all extensive inside this massive cabin. Pretty much every crew-cab 3500-series truck provides lots of space, and the GMC is no exception.
Visibility
The massive windshield and door pillars give the 3500 big blind spots. The large towing mirrors help with lane changes, but knowing where this truck's corners are can be tough. A rearview camera is standard, but competitors offer surround-view cameras and the GMC doesn't.
Quality
The body panels and interior pieces are well put together, without any rattling, shaking or malfunctioning during our test.
Utility
By most standards, the 3500HD certainly is utilitarian. It can tow and haul massive loads, and it has abundant interior storage. However, offerings from Ford and Ram outclass it by pretty much every measurement and in the arms race that is towing capacity, it falls behind by a few tons.
Small-item storage
Tons of pockets everywhere — doors, center console, two gloveboxes. The front and rear have pockets everywhere. If you can't find a place for your stuff in this truck, you just have too much stuff. Some competitors have smarter slight storage solutions for phones and devices, but only by a small margin.
Cargo space
As with pretty much every other heavy-duty truck, the Sierra 3500HD is available with a standard bed (6 feet 6 inches) and a long bed (8 feet 1 inch). Our test truck had the long bed, which allows for a massive amount of cargo space. The rear seats fold up for big interior storage as well.
Child safety seat accommodation
The 3500 can fit three car seats in the back without much fuss. There are two sets of easily accessible lower LATCH anchors and three shelf anchors that are a bit harder to reach. The trick, of course, is hoisting the kids up into their high perches.
Towing
The 6.6-liter turbodiesel has massive torque and power, but the towing capacities are significantly lower than those of its Ram and Ford competitors by about 8,000 pounds with a fifth wheel. Cruise control, exhaust braking and transmission logic are all very good while towing.
Hauling
When you're not towing your fifth wheel, you can haul any variety of beds, dressers, and various household furniture pieces in the back of the 3500HD. The payload rating is only a few hundred pounds below class leaders.
Technology
Using the MyLink interface is pretty simple, but we had several usability issues with our test vehicle. The finicky voice controls and subpar device integration made for a frustrating user experience.
Audio & navigation
The menu logic on the MyLink system is easy to understand, but it's not the most elegant in the class. The touchscreen responses are slower than with class leaders. While we like the optional 8-inch touchscreen, it doesn't stand out much from rival systems.
Smartphone integration
Our experience with smartphone devices was poor, with many dropped connections over the course of the test. We generally like the interface when it's working, but even then it takes quite a bit of time to load music. It's best to use Apple CarPlay and Android Auto.
Voice control
Several attempts to use the Silverado's built-in voice controls fell short, with a success rate of about 50 percent. It was easier to use the physical knobs and touchscreen controls. That said, Siri and Google Voice can be accessed if you've paired your smartphone by holding the talk button longer.
Which Sierra 3500HD does Edmunds recommend?
The SLT splits the difference between the two more work-focused lower trims and the decadent Denali trim. It offers leather upholstery, power-adjustable pedals, and an assortment of standard and optional features and packages, such as specialized suspension components. And when equipped with the optional 6.6-liter turbodiesel V8 engine, there's not much the Sierra 3500HD can't tow.
Helpful trims summary and side-by-side comparison chart
2018 GMC Sierra 3500HD models
The 2018 GMC Sierra 3500HD heavy-duty pickup truck is available in four trim levels and three cab sizes: regular cab, double cab and crew cab. All are available with two- or four-wheel drive and in either single rear-wheel (SRW) or dual rear-wheel (DRW, or dually) configuration. All 3500 Sierras come with a long bed (8 feet 1 inch) except the crew cab, which in single rear-wheel form offers a choice of long bed or shorter standard bed (6 feet 6 inches).
For buyers interested in a basic heavy-duty truck, the base Sierra comes standard with a 6.0-liter V8 engine (360 horsepower and 380 pound-feet), a six-speed automatic transmission, 18-inch steel wheels, an automatic locking rear differential, xenon headlights, air conditioning, a choice of cloth or vinyl upholstery, a 40/20/40-split front bench with a fold-down center armrest, power door locks, manual crank windows, cruise control and a tilt-only steering wheel.
Also standard are a rearview camera, Bluetooth, a 7-inch touchscreen, a USB port, a four- (regular cab) or six-speaker sound system, and Apple CarPlay and Android Auto smartphone integration.
From the base Sierra on up, you also have your choice of engine. A turbocharged 6.6-liter diesel V8 (445 hp and 910 lb-ft) is available, also paired to a six-speed automatic transmission.
Many options are available for the base Sierra. Highlights include a remote locking tailgate, LED bed lighting, a 110-volt power outlet, satellite radio, and OnStar services with 4G LTE Wi-Fi.
For a slightly less bare-bones experience, the SLE offers an 8-inch touchscreen, 18-inch alloy wheels (single-rear-wheel models only), tinted rear windows, a remote-locking EZ-Lift tailgate, remote keyless entry, carpeted floor, a 60/40-split folding rear seat, full power accessories, a leather-wrapped steering wheel, a CD player, satellite and HD radio, and most of the base Sierra's options.
Further up the ladder is our recommendation, the SLT. Building on the SLE's equipment, the SLT adds foglights, power-folding mirrors, dual-zone automatic climate control, leather upholstery, power-adjustable and heated front seats, driver-seat memory settings, power-adjustable pedals, a tilt-and-telescoping steering wheel, an auto-dimming rearview mirror, remote ignition, and a 110-volt household-style power outlet.
For a luxurious take on your hard-working truck, go with the Denali. It adds a spray-in bedliner, a power-sliding rear window with defogger, front and rear parking sensors, a navigation system, wireless phone charging, a Bose audio system, an upgraded driver information display, upgraded interior trim, ventilated front seats and a heated steering wheel.
Many of the standard features on upper trims can be added at lower trim levels in grouped packages. Other optional highlights depend on trim level and include different axle ratios, a bed storage box, tonneau covers, trailering mirrors, a sunroof, a gooseneck/fifth-wheel trailering prep package, a rear-seat entertainment system, and a Driver Alert package, which includes front and rear parking sensors, lane departure warning, forward collision warning and a safety-alert driver's seat.
Only available on the SLT is the All Terrain HD package, which includes 18-inch wheels, the Z71 off-road suspension, skid plates, front-and-rear parking sensors and a heated steering wheel. A separate Suspension package (available on the SLE and the SLT) offers hill descent control, skid plates, specially tuned shock absorbers and unique styling treatments.
RepairPal Reliability Ratings are based on the actual cost, frequency, and severity of unscheduled repairs and maintenance on make/model data for select 2008-2022 vehicles. The reliability of a specific vehicle may vary depending on its maintenance and driving history, model year, trim, and features.
The Nav system is almost useless as far as address input,
The 4 wheel selector knob doesn't need to above the very similar headlight knob,
Why not put a DEF gauge in it?
When DEF warning triggers the DIC, no other information is available until the DEF tank is filled!
Entertainment system (CD, books on disk and downloaded library books) startup again when I approach the vehicle … (phone in my pocket) and the engine is running. I have lost my place in many books many times because of this.
The backup camera surely came from a Cracker Jacks box, substandard quality.
The center display will ruin your night vision when put in reverse (it could use a dimmer/off switch). And why not allow full time use of the back up camera and back up lighting? (I live and work on my farm).
Steering wheel buttons could be a little more intuitive, It's easy to turn on the steering wheel heater when the intent was to reduce the cruise speed.
My truck has the 6.6 Duramax (awsome!) and I drive about 10k miles/mo. Needless to say, I'm in it a lot.
Don't misunderstand, I love my truck but like I said in the beginning, the design and engineering people should have to drive their creations for a month or so.
How did someone devise the notion to put the DEF filler neck under the hood and on the passenger side firewall? A common problem and more future problems will occur as the caustic DEF fluid splashes out of the filler neck, it drains down on top of and puddles in the wiring harness on the bottom of the DEF tank where the wires go into the bottom of the tank. It's happened once and it damaged the DEF tank heater... thingie. Luckily it was under extended warranty.
And one thing Edmunds, I couldn't find the 6.6 Duramax option on your drop down menus. There all 6.0s
First of all Edmunds doesn't give the Duramax / Allison option to review. That is what mine is so it might not compare to other reviewers. The some of previous reviewers must have been driving a completely different truck then I was. Some of those reviews just didn't make sense to me. This is an awesome truck. It's more "luxury car" like then any truck I've ever driven. And now I have … had 40,000 miles of trouble free use. My wife enjoys driving it because she has great visibility and it is so easy to handle for the "beast" that it is. It easily handles my 39 ', 15,300 5th Wheel toy hauler with a 2 700lb. mototcycles. You actually don't even know all that load is back there.
As it has gotten more miles on it the MPG has improved. I know this is hard to believe but at 40MPH I've gotten over 30 MPG. At interstate speeds of 70-75 MPG it averages over 21 MPG. Pulling my 17,000lb 5th Wheel trailer I get 11.5.
One of the problems for GM is that they build such a good truck that I can’t even consider a new purchase. This truck is all I need and the new enhancements don’t add much to what I already have.
I have had one mechanical issue. A bad injector came up on my “check engine” light. I didn’t notice any difference in performance. Took it to my dealer and the 5 year drive train warranty paid for the repairs.
I have a 2015 gmc 3500 dually with the durmax. I also put 24 inch 18 wheel style wheels with larger tires. My truck rides great and i had as much as 21 mpg on the hwy. I average about 15mpg but i do a lot of stop and go and sitting in Atlanta traffic. I have a 26 foot trailer and when i pull it it doesnt even feel any different. I had a ford f350 prior and i had nothing but … issues. I also have new a ls460 but i rather drive my truck.
I have owned my Sierra Denali for 2+ years and it has since been to the shop over 4 times, received a brand new engine, and is currently waiting on parts and labor which will cost an additional $1100. This vehicle is said to be the top of the line but has cost me more head ache and financial ruins than what it was worth. Please purchase another vehicle!
We have a limited number of reviews for the 2018 GMC Sierra 3500HD, so we've included reviews for other years of the Sierra 3500HD since its last redesign.
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