2009 GMC Sierra 3500: What's New, Specs & Features
Last updated August 4, 2026
The main change for the 2009 GMC Sierra 3500 is the addition of the Work Truck, SLE, and SLT trims. Otherwise, this is a light-update year with no major redesign or mechanical overhaul.
About the 2009 GMC Sierra 3500
2007-2010 Sierra HD design, third year of this heavy-duty body style and one year before the heavily revised 2011 Sierra HD.
GMC positions the Sierra 3500 as a Professional Grade heavy-duty pickup for serious towing, hauling, and jobsite work, but with a slightly more upscale look and cabin feel than its Chevrolet twin. Its core appeal is straightforward: strong work capability, a wide range of cab and axle configurations, and the option of the Duramax diesel/Allison automatic combination for buyers who need big pulling power.
The 2009 Sierra 3500 ranges from the straightforward Work Truck to the more comfortable SLE and leather-lined SLT. Work Truck focuses on towing and hauling basics, SLE adds conveniences such as cruise control and remote keyless entry, and SLT brings heated leather front seats, Bose audio, Bluetooth, and dual-zone climate control.
2009 GMC Sierra 3500 specs and features by trim
| Feature | |||
|---|---|---|---|
| Engine | V8, 6.0 Liter / V8, Turbo Diesel, 6.6L | V8, Turbo Diesel, 6.6L / V8, 6.0 Liter | V8, 6.0 Liter / V8, Turbo Diesel, 6.6L |
| Transmission | Automatic, 6-Spd Allison w/Overdrive | Automatic, 6-Spd HD w/Overdrive | Automatic, 6-Spd HD w/Overdrive |
| Drivetrain | 4WD | 4WD | 4WD |
| Fuel Type | Gas / Diesel | Diesel / Gas | Gas / Diesel |
| Horsepower | 360–365 hp | 360–365 hp | 322–365 hp |
| Torque | 380–660 lb-ft | 380–660 lb-ft | 380–660 lb-ft |
| Max Towing | 13000 lb | 13000 lb | 13000 lb |
| Rear Legroom | 34.3–39 in | 34.3–39 in | 34.3–39 in |
| Seats | 3–6 | 5 | 3–6 |
| Doors | 2–4 | 4 | 2–4 |
| Alarm System | |||
| Cruise Control | |||
| 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 | |||
| Front DVD Entertainment System | |||
| Navigation System | |||
| Rear DVD Entertainment System | |||
| Satellite Radio | |||
| Subwoofer | |||
| Auto-Dimming Interior Mirror | |||
| Dual Power Front Seats | |||
| Dual-Zone Climate Control | |||
| Heated Front Seats | |||
| Integrated Garage Door Opener | |||
| Leather Seats | |||
| Leather-Wrapped Steering Wheel | |||
| Memory Driver's Seat | |||
| Power Adjustable Pedals | |||
| Power Locks | |||
| Power Windows | |||
| Remote Start | |||
| Remote Keyless Entry | |||
| Tilt Wheel | |||
Frequently asked questions
What is the biggest change to the 2009 GMC Sierra 3500?
The biggest change is the addition of the Work Truck, SLE, and SLT trims. The truck otherwise continues without a major redesign or mechanical overhaul.
Was the 2009 GMC Sierra 3500 redesigned?
No, the 2009 GMC Sierra 3500 was not redesigned. It uses the same basic heavy-duty body style as 2008, with no major frame, chassis, suspension-layout, or exterior styling update.
Did the 2009 GMC Sierra 3500 get new engines?
No, the 2009 Sierra 3500 carries on with the 6.0-liter gas V8 and 6.6-liter Duramax diesel. There was no lineup-wide powertrain change for this model year.
Which 2009 GMC Sierra 3500 trim has the most comfort features?
The 2009 SLT is the most comfort-focused trim. It has leather seating, heated power-adjustable front seats, dual-zone climate control, Bose audio, Bluetooth, remote start, and heated power-adjustable mirrors.
Is the 2009 GMC Sierra 3500 a major upgrade over the 2008 model?
No, the 2009 Sierra 3500 is not a major upgrade over the 2008 model. Aside from the trim-line additions, its engines, styling, safety hardware, and basic chassis design largely carry over.