The 2019 GMC Sierra 3500HD is a full-size truck with massive capabilities. It is available with two powerful engines – standard V8 or turbodiesel – and both can pull large trailers or haul monster loads without problems. On the inside, the Sierra 3500HD is generously equipped at the base and SLE trim levels and luxury on the top Denali models. This GMC is a comfortable and quiet truck that can get the job done.
However, the 2019 GMC Sierra 3500HD isn’t alone in this class. The Ram and Ford heavy-duty trucks can tow significantly more. They also have modern interiors along with updated tech interfaces and safety features. A fully redesigned 2020 model promises to put the Sierra 3500HD back on a competitive position. Even so, there’s still enough good here to make the 2019 Sierra 3500HD worth checking out.
NEW FOR 2019
- Regular-cab Sierra 3500HD is no longer available
- Short-bed Double Cab model also removed from 3500HD lineup
- PRICING: base $42,490; SLE $48,190; SLT $53,290; Denali $57,895
TRIM LEVELS & FEATURES
The 2019 GMC Sierra 3500HD is a full-size heavy-duty pickup truck available in four trim levels: base, SLE, SLT and Denali. All come in a crew-cab body style, with a choice of single rear-wheel (SRW) or dual rear-wheel (dually) configuration. Two bed lengths are available: standard 6.6-foot short bed or 8.2-foot long bed.
The base Sierra comes standard with 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 and windows, cruise control, a tilt-only steering wheel, a rearview camera, Bluetooth, a 7-inch touchscreen, a USB port and a six-speaker stereo.
Many options are available for the base Sierra. It includes a remote locking tailgate, LED bed lighting, a 110-volt power outlet, satellite radio, and OnStar services with 4G LTE Wi-Fi.
The Sierra 3500HD SLE adds an 8-inch touchscreen, 18-inch alloy wheels (SRW), 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.
The SLT trim adds foglights, power-folding mirrors, dual-zone automatic climate control, leather upholstery, power-adjustable and heated front seats, driver-seat memory functions, power-adjustable pedals, a tilt-and-telescoping steering wheel, an auto-dimming rearview mirror, remote start, and a 110-volt household-style power outlet.
For a luxurious, the Sierra 3500HD Denali 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.
Only available on the SLT is the All Terrain HD package, which adds 18-inch wheels, the Z71 off-road suspension, skid plates, front and rear parking sensors, and a heated steering wheel. A separate Suspension package (SLE and SLT) offers hill descent control, skid plates, specially tuned shock absorbers and unique styling treatments.
Most of the standard equipment on upper trims can be added at lower trim levels in grouped packages. Other optional highlights depends 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.
Essentially restrained in nature, the 2019 GMC Sierra 3500HD cabs largely echo those found in Chevrolet’s Silverado HD series. Most GMC heavy-duty trucks are high-dollar Denali or midrange SLT editions, with leather upholstery and abundant comforts.
Sizable Sierra 3500HD trucks blend impressive tow/haul capability with satisfying comfort, especially up front. In terms of functionality, GMC’s infotainment system is identical to Chevrolet’s. Easy to use, it includes Android Auto and Apple CarPlay compatibility.
It’s hard to believe the Denali version is supposedly a work truck. From the inside, aluminum trim on the instrument panel, perforated leather seats with contrasting stitching, and a heated steering wheel convey the air of an upscale SUV. But even the most unadorned model doesn’t feel like drudgery, thanks to things like a 7-inch touch screen for the infotainment system, rearview camera, air conditioning, powered windows/locks, and a split-folding front-bench seat. The trim levels in between, SLE and SLT, pile on amenities like dual-zone climate control and power-adjustable pedals.
The standard engine for the 2019 GMC Sierra 3500HD is a 6.0-liter V8 gasoline. There’s also a version that uses compressed natural gas (CNG) producing 360 horsepower and 380 lb-ft of torque, but the regular version is already tough. The real power come from the optional 6.6-liter V8 turbodiesel generating 445 horsepower and 910 lb-ft of torque. In common with many other big diesel engines, this one has an exhaust-braking feature, which is most welcome when driving downhill. Each engine is connected to a six-speed automatic transmission, but the diesel has one from the renowned Allison company. Rear-wheel drive is the default setup, with four-wheel drive as an option throughout. The EPA doesn’t provide fuel-economy estimates for this size of vehicle.
6.0-liter CNG V8
301 horsepower @ 5,000 rpm
333 lb-ft of torque @ 4,200 rpm
EPA city/highway fuel economy: N/A
360 horsepower @ 3,000 rpm
380 lb-ft of torque @ 4,200 rpm
EPA city/highway fuel economy: N/A
6.6-liter turbodiesel V8
445 horsepower @ 2,800 rpm
910 lb-ft of torque @ 1,600 rpm
EPA city/highway fuel economy: NA
Crew Cab with 6’ 6” Box
Crew Cab with 8’ Box
Overall length (in.)
Overall width (in.)
80.5 – SRW; N/A – DRW
80.5 – SRW; 96 – DRW
Overall height – 2WD(in.)
78.3 – SRW; N/A – DRW
77.9 – SRW; 77.8 – DRW
Overall height – 4WD (in.)
78.1 – SRW; N/A – DRW
78.1 – SRW; 77.7 – DRW
42.8 (front); 40.5 (rear)
45.3 (front); 40.9 (rear)
Shoulder room (in.)
64.8 (front); 64.3 (rear)
Hip room (in.)
60.7 (front); 60.2 (rear)
WEIGHT & PAYLOAD
Curb Weight (lb.)
Crew cab, 6’6” box with single rear wheels (2WD)
Crew cab, 6’6” box with single rear wheels (4WD):
Crew cab, 8’ box with single rear wheels (2WD)
Crew cab, 8’ box with dual rear wheels (2WD)
Crew cab, 8’ box with single rear wheels (4WD)
Crew cab, 8’ box with dual rear wheels (4WD)
Ball hitch (lb.)
5th-wheel / gooseneck hitch (lb.)
Crew cab, 6’ 6” box with single rear wheels
2WD w/ 6.0L (4.10 axle): 3000
2WD w/ 6.6L (3.73 axle): 3000
4WD w/ 6.0L (4.10 axle): 3000
4WD w/ 6.6L (3.73 axle): 3000
2WD w/ 6.0L (4.10 axle): 14200
2WD w/ 6.6L (3.73 axle): 17500
4WD w/ 6.0L (4.10 axle): 13900
4WD w/ 6.6L (3.73 axle): 17200
Crew cab, 8’ box with single rear wheels
2WD w/ 6.0L (4.10 axle): 4100
2WD w/ 6.6L (3.73 axle): 4500
4WD w/ 6.0L (4.10 axle): 3700
4WD w/ 6.6L (3.73 axle): 5000
2WD w/ 6.0L (4.10 axle): 14000
2WD w/ 6.6L (3.73 axle): 17400
4WD w/ 6.0L (4.10 axle): 13700
4WD w/ 6.6L (3.73 axle): 17000
Crew cab, 8’ box with
dual rear wheels
2WD w/ 6.0L (4.10 axle): 3700
2WD w/ 6.6L (3.73 axle): 20000
4WD w/ 6.0L (4.10 axle): 13400
4WD w/ 6.6L (3.73 axle): 20000
2WD w/ 6.0L (4.10 axle): 13700
2WD w/ 6.6L (3.73 axle): 23100
4WD w/ 6.0L (4.10 axle): 13300
4WD w/ 6.6L (3.73 axle): 22700