2014 GMC Sierra 2500: What's New, Specs & Features
Last updated August 13, 2026
The main change for the 2014 GMC Sierra 2500 HD is the addition of a bi-fuel 6.0-liter V8 that runs on gasoline or compressed natural gas. The Extended Cab also drops from the lineup, but the truck is otherwise largely unchanged before its 2015 redesign.
About the 2014 GMC Sierra 2500
2nd generation Sierra HD (2011-2014), final year before the 2015 redesign.
The Sierra 2500 HD is GMC’s heavy-duty pickup for buyers who need real towing and payload strength but want a more polished, more upscale truck than a basic fleet rig. GMC positions the model as a work-capable tow vehicle that can also serve as an everyday driver, with trims ranging from simple jobsite-focused versions to the luxury-oriented Denali. Its core appeal is big-truck capability paired with a quieter cabin and a more premium look than many heavy-duty rivals.
The 2014 Sierra 2500 HD ranges from the basic, easy-clean Work Truck to the luxury-focused Denali. SLT combines leather, heated front seats, automatic climate control, Bose audio, and built-in towing equipment, while Denali adds ventilated front seats, navigation, a heated steering wheel, and distinctive chrome trim.
What changed, by category
2014 GMC Sierra 2500 specs and features by trim
| Feature | ||||
|---|---|---|---|---|
| Engine | V8, Flex Fuel, 6.0 Liter / V8, Turbo Dsl, 6.6L / V8, CNG, 6.0L / V8, Natural Gas, 6.0L / V8, Turbo Diesel, 6.6 Liter | V8, Flex Fuel, 6.0 Liter / V8, Turbo Dsl, 6.6L / V8, CNG, 6.0L | V8, Flex Fuel, 6.0 Liter / V8,Turbo Dsl, 6.6L / V8, CNG, 6.0L | V8, Flex Fuel, 6.0 Liter / V8, Turbo Dsl, 6.6L / V8, CNG, 6.0L |
| Transmission | Auto, 6-Spd Allison OD / Auto, 6-Spd HD Overdrive | Auto, 6-Spd Allison OD | Auto, 6-Spd Allison OD | Auto, 6-Spd HD Overdrive |
| Drivetrain | 4WD | 4WD | 4WD | 4WD |
| Fuel Type | Flexible Fuel / Diesel / Natural Gas | Flexible Fuel / Diesel / Natural Gas | Flexible Fuel / Diesel / Natural Gas | Flexible Fuel / Diesel / Natural Gas |
| Horsepower | 360–397 hp | 360–397 hp | 360–397 hp | 360–397 hp |
| Torque | 380–765 lb-ft | 380–765 lb-ft | 380–765 lb-ft | 380–765 lb-ft |
| Max Towing | 13000 lb | 13000 lb | 13000 lb | 13000 lb |
| Rear Legroom | 39 in | 39 in | 39 in | 39 in |
| Seats | 3–6 | 5 | 5 | 3–6 |
| Doors | 2–4 | 4 | 4 | 2–4 |
| Alarm System | ||||
| Rear Parking Sensors | ||||
| Rear View Camera | ||||
| Alloy Wheels | ||||
| Auto-Dimming Exterior Mirrors | ||||
| Fog Lights | ||||
| Heated Mirrors | ||||
| Power Moonroof | ||||
| Power Folding Exterior Mirrors | ||||
| Power Mirrors | ||||
| Privacy Glass | ||||
| Trailer Hitch Receiver | ||||
| 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 biggest change to the 2014 GMC Sierra 2500 HD?
The biggest change is a bi-fuel 6.0-liter V8 that runs on gasoline or compressed natural gas. Otherwise, the core gasoline and diesel powertrains remain largely unchanged from 2013.
Does the 2014 GMC Sierra 2500 HD still have an Extended Cab version?
No. GMC dropped the Extended Cab body style from the Sierra 2500 HD lineup for 2014.
Was the 2014 GMC Sierra 2500 HD redesigned?
No. The 2014 Sierra 2500 HD is the final year of its generation and has no major styling, cabin, chassis, safety, or infotainment overhaul. The full redesign arrives for 2015.
How does the 2014 GMC Sierra 2500 HD differ from the 2013 model?
The 2014 model adds a gasoline/CNG bi-fuel V8 to the lineup and drops the Extended Cab body style. Most other major mechanical and equipment details carry over.
What are the standout trims in the 2014 GMC Sierra 2500 HD lineup?
The 2014 lineup runs from the work-focused Work Truck to the luxury-oriented Denali. SLT adds leather, heated front seats, Bose audio, and built-in towing equipment, while Denali brings ventilated front seats, navigation, a heated steering wheel, and extra chrome trim.