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2019 GMC Sierra 3500: What's New, Specs & Features
Last updated August 4, 2026
The 2019 GMC Sierra 3500HD was a carryover with no major changes. Its main distinction is that it was the final model year before the truck’s full redesign for 2020.
About the 2019 GMC Sierra 3500
Third-generation Sierra HD, final model year of the 2015-2019 body generation before the all-new 2020 redesign.
GMC positioned the Sierra 3500HD as a heavy-duty towing and hauling truck that combines serious work capability with a more comfortable, upscale cabin than a basic commercial pickup. The range spans gas and turbo-diesel V8 power, 2WD and 4WD, and single- or dual-rear-wheel configurations. Its main distinction is the breadth of the trim ladder: durable work-truck hardware at the bottom and SUV-like seating, audio and cabin technology in Denali.
The 2019 range centered on Crew Cab pickups spanning straightforward work trucks, better-equipped towing models and the luxury-focused Denali. The base trim emphasized durable towing hardware, while SLE added an 8-inch touchscreen and integrated trailer equipment. SLT brought heated leather seating, and Denali added ventilated front seats, navigation, Bose audio and extra driver alerts.
2019 GMC Sierra 3500 specs and features by trim
| Feature | ||||
|---|---|---|---|---|
| Engine | V8, Turbo Diesel, 6.6 Liter / V8, Flex Fuel, 6.0 Liter / V8, Compressed Natural Gas, 6.0 Liter | V8, Turbo Diesel, 6.6 Liter / V8, Flex Fuel, 6.0 Liter / V8, Compressed Natural Gas, 6.0 Liter | V8, Turbo Diesel, 6.6 Liter / V8, Flex Fuel, 6.0 Liter / V8, Compressed Natural Gas, 6.0 Liter | V8, Turbo Diesel, 6.6 Liter / V8, Flex Fuel, 6.0 Liter |
| Transmission | Automatic, 6-Spd Allison w/Overdrive | Automatic, 6-Spd Allison w/Overdrive | Automatic, 6-Spd HD w/Overdrive | Automatic, 6-Spd HD w/Overdrive |
| Drivetrain | 4WD | 4WD | 4WD | 4WD |
| Fuel Type | Diesel / Flexible Fuel / Natural Gas | Diesel / Flexible Fuel / Natural Gas | Diesel / Flexible Fuel / Natural Gas | Diesel / Flexible Fuel |
| Horsepower | 360–445 hp | 360–445 hp | 360–445 hp | 360–445 hp |
| Torque | 380–910 lb-ft | 380–910 lb-ft | 380–910 lb-ft | 380–910 lb-ft |
| Max Towing | 13000–13400 lb | 13000–13400 lb | 13000–13400 lb | 13000–13700 lb |
| Rear Legroom | 40.9 in | 40.9 in | 40.9 in | 40.9 in |
| Seats | 6 | 6 | 6 | 5 |
| Doors | 4 | 4 | 4 | 4 |
| Alarm System | ||||
| Hill Descent Control | ||||
| Lane Departure Warning | ||||
| Park Assist | ||||
| Rear View Camera | ||||
| Alloy Wheels | ||||
| Fog Lights | ||||
| Heated Mirrors | ||||
| Memory Exterior Mirrors | ||||
| Power Moonroof | ||||
| Power Mirrors | ||||
| Privacy Glass | ||||
| Remote Control Liftgate/Trunk Release | ||||
| Side Steps | ||||
| Navigation System | ||||
| Satellite Radio | ||||
| Smartphone Interface | ||||
| Subwoofer | ||||
| Touch Screen Monitor | ||||
| USB Ports | ||||
| Auto-Dimming Interior Mirror | ||||
| Dual Power Front Seats | ||||
| Dual-Zone Climate Control | ||||
| Heated Front Seats | ||||
| Heated Steering Wheel | ||||
| Integrated Garage Door Opener | ||||
| Leather Seats | ||||
| Leather-Wrapped Steering Wheel | ||||
| Memory Driver's Seat | ||||
| Power Adjustable Pedals | ||||
| Power Driver Seat | ||||
| Remote Start | ||||
| Remote Keyless Entry | ||||
| Tilt Wheel | ||||
| Tilt/Telescoping Steering Wheel | ||||
| Ventilated Front Seats | ||||
Frequently asked questions
What changed on the 2019 GMC Sierra 3500HD compared with the 2018 model?
Nothing major changed for 2019. The gas and turbo-diesel V8 powertrains, six-speed automatic transmissions, styling, safety equipment and cabin technology carried over from 2018.
Was 2019 the final year before the GMC Sierra 3500HD redesign?
Yes. The 2019 Sierra 3500HD was the final model year of the 2015–2019 design, followed by the all-new 2020 Sierra HD.
What powertrains did the 2019 GMC Sierra 3500HD use?
The 2019 Sierra 3500HD continued with gas and turbo-diesel V8 powertrains paired with six-speed automatic transmissions. There was no lineup-wide powertrain change for this model year.
How did the 2019 GMC Sierra 3500HD trims differ?
The base trim was the work-focused model, SLE added everyday convenience and integrated towing equipment, SLT added comforts such as heated leather seating, and Denali combined heavy-duty capability with navigation, premium audio, ventilated front seats and added driver alerts.
2019 GMC Sierra 3500 Reviews
What owners are saying about the 2019 GMC Sierra 3500.
4.2
2019 GMC Sierra 3500
(122 reviews)
“This is my third GMC truck. I have owned a 1500, 2500HD and now a 3500HD and couldn't be more pleased with the quality and performance.”
“Options are excellent but don't get manufacturer "goose neck" assembly. It's a joke - thought up by a man.”