“The infotainment connection to phones is horrible in this car. It drops connection to the phone every 3 to 4 minutes and reconnects mid call. Had the same issue on multiple phones. Screen freezes up and has to be reset 1 in 15 drives.”
2024 GMC Sierra 3500: What's New, Specs & Features
Last updated August 4, 2026
The 2024 GMC Sierra 3500 HD’s biggest change is a major mid-cycle refresh. It brings redesigned front-end styling, updated cabins, revised powertrains, and more standard safety technology.
About the 2024 GMC Sierra 3500
4th generation, introduced for 2020; major mid-cycle refresh for 2024
The Sierra 3500 HD is GMC’s highest-capacity pickup, built for heavy trailers, large payloads and demanding work while offering more cabin comfort and visual distinction than a basic work truck. Its identity centers on strong gas and diesel V8 powertrains, integrated bed steps, trailer-focused controls and camera technology, with trims ranging from straightforward Pro models to Denali versions with luxury-car comfort and materials.
The lineup stretches from the straightforward, work-focused Pro to the off-road-oriented AT4 and luxury-focused Denali trims. SLE and higher trims have a 13.4-inch touchscreen and 12.3-inch digital instrument display, while AT4 adds four-wheel drive, skid plates, off-road suspension, and surround-view cameras. A new diesel-only top trim adds massaging front seats, full-grain leather, a head-up display, and premium Bose surround sound.
What changed, by category
Powertrain
The gas 6.6-liter V8 is paired with a 10-speed automatic transmission. The 6.6-liter turbo-diesel V8 rises from 445 to 470 horsepower and from 910 to 975 lb-ft of torque, with stronger response at low speeds.
Styling
GMC redesigned the grille, front bumper, and LED signature lighting across the lineup.
Safety
A safety suite becomes standard across the lineup, bringing forward-collision warning, automatic emergency braking, front pedestrian braking, lane-departure warning, and automatic high beams.
Tech
SLE and higher trims receive a redesigned cabin built around a 13.4-inch touchscreen and a 12.3-inch digital instrument display.
2024 GMC Sierra 3500 specs and features by trim
| Feature | ||||||
|---|---|---|---|---|---|---|
| Engine | V8, Turbo Diesel, 6.6 Liter / V8, 6.6 Liter | V8, Turbo Diesel, 6.6 Liter / V8, 6.6 Liter | V8, Turbo Diesel, 6.6 Liter / V8, 6.6 Liter | V8, 6.6 Liter / V8, Turbo Diesel, 6.6 Liter | V8, Turbo Diesel, 6.6 Liter / V8, 6.6 Liter | V8, Turbo Diesel, 6.6 Liter |
| Transmission | Automatic, 10-Spd Allison | Automatic, 10-Spd Allison | Automatic, 10-Spd Allison | Automatic, 10-Spd Allison | Automatic, 10-Spd Allison | Automatic, 10-Spd Allison |
| Drivetrain | 4WD | 4WD | 4WD | 4WD | 4WD | 4WD |
| Fuel Type | Diesel / Gas | Diesel / Gas | Diesel / Gas | Gas / Diesel | Diesel / Gas | Diesel |
| Horsepower | 401–470 hp | 401–470 hp | 401–470 hp | 401–470 hp | 401–470 hp | 470 hp |
| Torque | 464–975 lb-ft | 464–975 lb-ft | 464–975 lb-ft | 464–975 lb-ft | 464–975 lb-ft | 975 lb-ft |
| Max Towing | 21200–21300 lb | 21590–31000 lb | 21590–31000 lb | 21600–31000 lb | 21100–21200 lb | 21000–21100 lb |
| Rear Legroom | 43.4 in | 35.2–43.4 in | 35.2–43.4 in | 43.4 in | 43.4 in | 43.4 in |
| Seats | 5 | 3–6 | 3–6 | 6 | 5 | 5 |
| Doors | 4 | 2–4 | 2–4 | 4 | 4 | 4 |
| Adaptive Cruise Control | ||||||
| Alarm System | ||||||
| Automatic Emergency Braking | ||||||
| Automatic High Beams | ||||||
| Blindspot Sensors | ||||||
| Cruise Control | ||||||
| Hill Descent Control | ||||||
| Lane Departure Warning | ||||||
| Park Assist | ||||||
| Rain Sensing Windshield Wipers | ||||||
| Rear View Camera | ||||||
| 360 Camera | ||||||
| Alloy Wheels | ||||||
| Fog Lights | ||||||
| Heated Mirrors | ||||||
| LED Headlights | ||||||
| Memory Exterior Mirrors | ||||||
| Power Moonroof | ||||||
| Power Folding Exterior Mirrors | ||||||
| Power Mirrors | ||||||
| Power Side Steps | ||||||
| Privacy Glass | ||||||
| Side Steps | ||||||
| Tow Hooks | ||||||
| Head-Up Display | ||||||
| Navigation System | ||||||
| Premium Audio | ||||||
| SD Card Slot | ||||||
| Satellite Radio | ||||||
| Smartphone Interface | ||||||
| Subwoofer | ||||||
| Touch Screen Monitor | ||||||
| Auto-Dimming Interior Mirror | ||||||
| Dual Power Front Seats | ||||||
| Dual-Zone Climate Control | ||||||
| Heated Front Seats | ||||||
| Heated Rear Seats | ||||||
| Heated Steering Wheel | ||||||
| Integrated Garage Door Opener | ||||||
| Leather Seats | ||||||
| Leather-Wrapped Steering Wheel | ||||||
| Massage Front Seat | ||||||
| Memory Driver's Seat | ||||||
| Power Driver Seat | ||||||
| Push-Button Engine Start | ||||||
| Remote Start | ||||||
| Tilt Wheel | ||||||
| Tilt/Telescoping Steering Wheel | ||||||
| Ventilated Front Seats | ||||||
Frequently asked questions
How different is the 2024 GMC Sierra 3500 from the 2023 model?
The 2024 Sierra 3500 is substantially updated rather than carried over. It has redesigned front-end styling, new interiors on SLE and higher trims, revised gas and diesel powertrains, and more standard driver-assistance technology.
Did the 2024 GMC Sierra 3500 gas V8 get a new transmission?
Yes. For 2024, the gas 6.6-liter V8 is paired with a 10-speed automatic transmission.
Is the 2024 GMC Sierra 3500 diesel more powerful than the 2023 diesel?
Yes. The 2024 turbo-diesel produces 470 horsepower and 975 lb-ft of torque, up from 445 horsepower and 910 lb-ft in 2023. GMC also revised it for stronger response at low speeds.
Which 2024 GMC Sierra 3500 trims have the larger dashboard screens?
SLE, SLT, AT4, Denali, and the new top trim have the redesigned dashboard with a 13.4-inch touchscreen and 12.3-inch digital instrument display. The work-focused Pro retains a simpler cabin layout.
Did the 2024 GMC Sierra 3500 add a new top trim?
Yes. A new diesel-only luxury trim joins the 2024 Sierra 3500 lineup with 16-way massaging front seats, full-grain leather, premium Bose surround sound, a head-up display, and a rear camera mirror.
2024 GMC Sierra 3500 Reviews
What owners are saying about the 2024 GMC Sierra 3500.
4.1
2024 GMC Sierra 3500
(217 reviews)
“The windshield wipers are a failure in cold temperatures. There needs to be a heated front windshield on the bottom. The defrost does not get to them so they freeze over. This is dangerous.”
“Looks great, comfortable ride, hauls gooseneck living quarter horse trailer with ease and many cameras are excellent”