2014 GMC Sierra 3500: What's New, Specs & Features
Last updated August 13, 2026
The 2014 GMC Sierra 3500HD is a light-update year, not a redesign. The main change is a standard 4.10 rear axle ratio for gas-engine trucks; the rest of the lineup largely carries over.
About the 2014 GMC Sierra 3500
2nd generation (2007-2014), final model year; major chassis and powertrain updates arrived for 2011, followed by a full redesign for 2015
GMC positioned the Sierra 3500HD as its one-ton heavy-duty pickup for substantial towing and hauling, with single- or dual-rear-wheel configurations and gasoline or diesel V8 power. Its defining difference was the combination of work-focused hardware with a quieter, more comfortable road manner than shoppers might expect from a one-ton truck. The four-trim range also extended from a durable vinyl-cabin work truck to a Denali with luxury-car comfort features.
The 2014 lineup ranges from the durable, vinyl-lined Work Truck to the more comfortable SLE and leather-equipped SLT. Denali is the luxury-focused version, with heated and ventilated leather seats, Bose audio, a rearview camera and a heated steering wheel. Heavy-duty trailering equipment and an integrated trailer brake controller keep every trim focused on towing and hauling.
What changed, by category
2014 GMC Sierra 3500 specs and features by trim
| Feature | ||||
|---|---|---|---|---|
| Engine | V8, Flex Fuel, 6.0 Liter / V8, Turbo Diesel, 6.6 Liter | V8, Flex Fuel, 6.0 Liter / V8, Turbo Diesel, 6.6 Liter | V8, Flex Fuel, 6.0 Liter / V8, Turbo Diesel, 6.6 Liter | V8, Flex Fuel, 6.0 Liter / V8, Turbo Diesel, 6.6 Liter |
| Transmission | Automatic, 6-Spd Allison w/Overdrive / Auto, 6-Spd HD 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 | Flexible Fuel / Diesel | Flexible Fuel / Diesel | Flexible Fuel / Diesel | Flexible Fuel / Diesel |
| Horsepower | 322–397 hp | 322–397 hp | 322–397 hp | 322–397 hp |
| Torque | 380–765 lb-ft | 380–765 lb-ft | 380–765 lb-ft | 380–765 lb-ft |
| Max Towing | 13000–18000 lb | 13000–18000 lb | 13000–18000 lb | 13000–18000 lb |
| Rear Legroom | 39 in | 39 in | 39 in | 39 in |
| Seats | 3–5 | 5 | 5 | 3–6 |
| Doors | 2–4 | 4 | 4 | 2–4 |
| Alarm System | ||||
| Rear Parking Sensors | ||||
| Rear View Camera | ||||
| Alloy Wheels | ||||
| Fog Lights | ||||
| Heated Mirrors | ||||
| Power Moonroof | ||||
| Power Mirrors | ||||
| Privacy Glass | ||||
| Bluetooth | ||||
| Built-In Hard Drive | ||||
| Front DVD Entertainment System | ||||
| Navigation System | ||||
| Rear DVD Entertainment System | ||||
| Satellite Radio | ||||
| Subwoofer | ||||
| USB Ports | ||||
| Auto-Dimming Interior Mirror | ||||
| Cooled Seats | ||||
| 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 Windows | ||||
| Remote Start | ||||
| Tilt Wheel | ||||
Frequently asked questions
What is the main change to the 2014 GMC Sierra 3500HD?
The main change is a standard 4.10 rear axle ratio for gas-engine Sierra 3500HD trucks. The engines, six-speed automatic transmissions, styling, cabin technology, safety systems and chassis otherwise carry over without significant updates.
Was the 2014 GMC Sierra 3500HD redesigned?
No, the 2014 Sierra 3500HD was not redesigned. It was the final model year of the second generation, which ran from 2007 through 2014 and received major chassis and powertrain updates for 2011.
Did the diesel 2014 GMC Sierra 3500HD receive a major update?
No, the turbo-diesel V8 and its six-speed automatic transmission carried over without a significant update for 2014. The year's notable mechanical change applies to gas-engine trucks.
How different is the 2014 GMC Sierra 3500HD from the 2013 model?
The 2014 model is very similar to the 2013 truck. Its meaningful product change is the standard 4.10 rear axle ratio on gas versions, with no broad styling, safety, technology or chassis update.
Which 2014 GMC Sierra 3500HD trim has the most luxury equipment?
Denali has the most luxury equipment in the 2014 Sierra 3500HD lineup. It features heated and ventilated leather front seats, Bose audio, a rearview camera, a heated steering wheel and dual-zone automatic climate control.