The 2008 GMC Sierra 3500 HD Crew Cab SLT 4WD SRW with the 6.6L V8 Turbo Diesel is a heavy-duty truck built for serious power and refined comfort. Its legendary Duramax diesel engine delivers immense torque and towing capability, making it a reliable workhorse for hauling heavy trailers, equipment, or recreational toys with ease. Paired with a durable Allison transmission, it ensures smooth, confident performance even under the toughest loads. The Crew Cab configuration provides a spacious interior with seating for up to five, blending rugged durability with premium touches like leather-trimmed seats, wood-grain accents, and available dual-zone climate control. As an SLT trim, it adds upscale convenience features such as power-adjustable seats, a premium audio system, and advanced driver comfort options. The 4WD system gives the Sierra excellent traction and stability on rough terrain, job sites, or adverse weather conditions. Strong, reliable, and comfortable, the 2008 Sierra 3500 HD SLT is a truck that excels at both work and leisure.
Equipment
Seats
Driver seat: heated
Driver seat power adjustments: height, lumbar, reclining, 10
Front headrests: adjustable
Front seat type: bucket
Passenger seat: heated
Passenger seat power adjustments: height, lumbar, reclining, 10
Upholstery: leather-trimmed
Brakes
ABS: 4-wheel
Front brake diameter: 12.8
Front brake type: ventilated disc
Front brake width: 1.5
Power brakes:
Rear brake diameter: 12.8
Rear brake type: ventilated disc
Rear brake width: 1.2
Engine
Alternator: 125 amps
Auxiliary engine cooler:
Battery: heavy duty, maintenance-free
Battery rating: 600 CCA
Battery saver:
Lights
Daytime running lights:
Front fog lights:
Airbags
Front airbags: dual
Mirrors
Side mirror adjustments: manual folding, power
Side mirrors: heated
Windows
Heated windshield washer jets:
Power windows:
Solar-tinted glass:
Window defogger: rear
Security
Anti-theft system: audio security system
Power door locks:
Drivetrain
4WD selector: electronic hi-lo
4WD type: part time
Axle ratio: 3.73
Locking differential: rear
Suspension
Front shock type: monotube
Front spring type: torsion bars
Front stabilizer bar: diameter 34 mm
Front suspension classification: independent
Front suspension type: short and long arm
Rear shock type: monotube
Rear spring type: leaf
Rear suspension classification: solid live axle
Rear suspension type: multi-leaf
Telematics
Satellite communications: OnStar
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
Tires and Rims
Spare tire mount location: outside
Tire Pressure Monitoring System:
Tire type: all terrain
Wheels: steel
Instrumentation
Compass:
External temperature display:
Trip odometer:
Warnings and reminders: tire fill alert
Air Conditioning
Air filtration:
Front air conditioning: automatic climate control
Front air conditioning zones: dual
Comfort Features
Floor mat material: rubber/vinyl
Floor material: carpet
Floor mats: front, rear
Steering wheel trim: leather
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:
Pickup bed type: fleetside
Rear bumper color: chrome
Towing and Hauling
Auxiliary transmission fluid cooler:
Tow hooks: front
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:
Retained accessory power:
Steering wheel: tilt
Storage: seatback
Vanity mirrors: dual illuminating
Disclaimer: Prices do not include government fees and taxes, any finance charges, any electronic filing charge and any emission testing charge. Prices include Dealer Delivery and Handling Charges. We update our website inventory frequently, but our inventory changes with recent sales. Mileage may change slightly due to test drives. We are not responsible for any errors or omissions on this page. Please feel free to call us before you visit.