2008 GMC Sierra 2500HD SLT Specs

GMC Sierra 2500HD
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2008 GMC Sierra 2500HD 2WD Extended Cab 143.5" SLT powered by 6.0L V8 Gas Engine with 6-Speed Automatic transmission.

Select configuration:
Starting Price (MSRP)
6.0L V8 Gas
6-Speed Automatic
Rear-Wheel Drive
Body Type
Seating capacity
5 seater
Trunk Volume
Fuel Economy
City: N/A
Hwy: N/A

Performance Specs

Engine and Transmission

  • Engine
    6.0L V8 Gas
    Engine (+$7,195)
  • Horsepower
    353 hp @ 5400 rpm
  • Torque
    373 lb-ft @ 4400 rpm
  • Transmission
    6-Speed Automatic
  • Drivetrain
    Rear-Wheel Drive


  • Steering Type
  • Turning Diameter
    47.6 ft


  • Wheels Type
    Aluminum Wheels
  • Front Wheel Size
    17" x 7.5"
  • Rear Wheel Size
    17" x 7.5"


  • Front Tire
  • Rear Tire
  • Spare Tire

Fuel and MPG

Fuel Tank

  • Fuel Tank Capacity
    26 gallons

Dimensions and Measurement

Exterior Dimensions

  • Height
    76.8 in
  • Max Width
    80 in
  • Wheelbase
    143.5 in

Interior Space

  • Seating Capacity
    5 seater
  • Front Seat Leg Room
    41.3 in
  • Front Seat Headroom
    41.3 in
  • Front Seat Shoulder Room
    65.2 in
  • Front Seat Hip Room
    62.5 in
  • Rear Seat Leg Room
    34.3 in
  • Rear Seat Headroom
    39.3 in
  • Rear Seat Shoulder Room
    65.3 in
  • Rear Seat Hip Room
    61.8 in

Colors and Materials

Standard Interior Materials

  • Dark Titanium/Light Titanium, Ultrasoft leather-appointed seat trim
  • Ebony, Ultrasoft leather-appointed seat trim
  • Very Dark Cashmere/Light Cashmere, Ultrasoft leather-appointed seat trim

Features and Options

Interior Trim

  • Bucket Seats
    Not Available
  • Cloth Seats
  • Leather Seats
  • Leather Steering Wheel
    Not Available
  • Premium Synthetic Seats
  • Vinyl Seats
  • Woodgrain Interior Trim
    Not Available
  • Sun/Moonroof
    Not Available

Additional Packages

Convenience Package


includes (JF4) adjustable power pedals, (AP3) remote vehicle starter system and (UD7) Rear Parking Assist (Requires Extended or Crew Cab models. Not available with (ZW9) pickup bed delete or (VF7) rear bumper delete.) Convenience Package Includes power-adjustable pedals, remote vehicle starter system and rear parking assist (On SLE-1, requires Extended or Crew Cab models).

EZ-Lift tailgate package


includes (A60) locking tailgate and (PPA) EZ-Lift tailgate (Not available with (ZW9) pickup box delete.) EZ-Lift Tailgate Package Includes tailgate lock and torque rod assist (Not available on 3500HD Regular Cab, Long Box).

Skid Plate Package, frame-mounted shields


includes front underbody shield starting behind front bumper and running to first cross-member, protecting front underbody, oil pan, differential case and transfer case (Not available with 2WD models unless (PDL) Z71 Off-Road Package is ordered. Included with (PDL) Z71 Off-Road Package or (VYU) Snow Plow Prep Package.) Skid Plate Package Includes front underbody shield. Available only on 4WD models or 2WD models with Z71 Suspension.

SLT Preferred Equipment Group

includes standard equipment


Warranty Summary

  • Basic
    3 Years / 36,000 Miles
  • Corrosion
    6 Years / 100,000 Miles
  • Drivetrain
    5 Years / 100,000 Miles
  • Roadside Assistance
    5 Years / 100,000 Miles
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