If you’re looking for a pre-emissions Duramax that doesn’t break the bank, this is it. This 2008 GMC Sierra 3500HD SLT is powered by the legendary 6.6L LMM Duramax and paired with the 6-speed Allison automatic transmission. It’s a Crew Cab 4x4 Long Bed Dually — a true workhorse with everyday drivability and classic diesel reliability.
Many enthusiasts consider 2007.5–2008 LMM Duramax trucks to be the sweet spot: still pre-DEF, with fewer emissions complications than later years, and built during GM’s strongest heavy-duty era.
Finished in a clean metallic gray over a black leather interior with heated seats, this truck has just over 146K miles, a clean title, and a solid service history. Whether you’re towing, hauling, or planning a long-haul conversion — this Dually is ready to go.
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??? Key Highlights: • 6.6L LMM Duramax Diesel (Pre-DEF) • Allison 1000 6-Speed Automatic • SLT Trim Package • Heated Leather Seats • Crew Cab | 4x4 • Long Bed (8ft) • Dual Rear Wheel (DRW) • 146,126 miles • Clean Title | Strong Carfax Service History
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?? Video Walkaround Available Find this truck on YouTube: Fraziers Friends @ Diesel Trucks Nationwide ?? https://www.youtube.com/@DieselTrucksNationwide
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Vehicle Features & Options
Standard Features
Air Conditioning
Air filtration
Front air conditioning: automatic climate control
Front air conditioning zones: dual
Airbags
Front airbags: dual
Audio System
Headphones: wired
In-Dash CD: MP3 Playback, single disc
Premium brand: Bose
Radio: AM/FM
Radio data system
Satellite radio: SiriusXM
Speed sensitive volume control
Subwoofer: 1
Brakes
ABS: 4-wheel
Front brake type: ventilated disc
Power brakes
Rear brake type: ventilated disc
Comfort Features
Floor mat material: rubber/vinyl
Floor material: carpet
Floor mats: front, rear
Steering wheel trim: leather
Convenience Features
Assist handle: passenger side
Center console: front console with storage
Cupholders: front, rear
Memorized settings: 2 driver
One-touch windows: 2
Power outlet(s): two 12V front
Power steering
Reading lights: front
Rearview mirror: auto-dimming
Remote engine start
Steering wheel: tilt
Storage: seatback
Vanity mirrors: dual illuminating
Exterior Features
Body side moldings: body-color
Door handle color: body-color
Front bumper color: chrome
Grille color: chrome surround
Mirror color: black
Pickup bed light
Rear bumper color: chrome
Instrumentation
Compass
External temperature display
Trip odometer
Lights
Daytime running lights
Front fog lights
Roof-mounted lights
Mirrors
Side mirror adjustments: manual folding, power
Side mirrors: heated
Powertrain
4WD selector: electronic hi-lo
4WD type: part time
Alternator: 125 amps
Auxiliary oil cooler
Auxiliary transmission fluid cooler
Battery: heavy duty, maintenance-free
Battery rating: 600 CCA
Battery saver
Seats
Driver seat: heated
Driver seat power adjustments: 10, height, lumbar, reclining
Front headrests: adjustable
Front seat type: bucket
Passenger seat: heated
Passenger seat power adjustments: 10, height, lumbar, reclining