2008 GMC Sierra Summary & Specs Review at Automotive.com
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2008 GMC Sierra Review: Summary & Specs

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2008 GMC Sierra Review

Smoother ride, sharper steering than other heavy-duty pickups.

2008 Sierra Review Summary & Specifications

If you want the capability of a big pickup with the least sensation of driving a big pickup, the Sierra HD deserves consideration. In a world run amuck for ever-larger trailers and powerplants, it's a sensible alternative for anyone who needs to haul stuff but doesn't want a special driver's license to do it.

G.R. Whale filed this report to NewCarTestDrive.com from California.

Review Sections
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2008 GMC Sierra Specs
Vehicle CategoryPickups
EditorG.R. Whale
Model LineupGMC Sierra HD Regular Cab 2500 4WD WT ($26,930), Extended Cab 2500 2WD SLE2 long bed ($32,300), Crew Cab 3500 4WD DRW WT ($32,885), Extended Cab 3500 DRW 4WD SLT ($38,175)
Engines (standard)6.6-liter ohv 32-valve V8 turbodiesel
Transmissions (standard)6-speed automatic
Engines (optional)353-hp 6.0-liter V8; 312-hp 6.0-liter V-8; 365-hp 6.6-liter V8 turbodiesel
Transmissions (optional)6-speed automatic
Safety Equipment (standard)frontal airbags, front seat belt pretensioners, ABS, OnStar
Safety Equipment (optional)
Basic Warranty3 years/36,000 miles
Assembled InPontiac, Michigan; Flint, Michigan
Manufacturer Phone800-462-8782
Manufacturer URLwww.gmbuypower.com
Base Price MSRP23830


2008 GMC Sierra Specs as Tested
Model Tested MSRPGMC Sierra 3500 HD Crew Cab 4x4 6.6 auto ($39,310)
Standard Equipmentair conditioning, power steering, power disc brakes, locking differential, tire pressure monitors, Autotrac electric-shift 4WD, power heated mirrors, power windows, power locks, overhead console, cruise control, tilt leather wheel, driver info center, CD/MP3 audio, tap-shift automatic, fog lamps, aluminum wheels
Options as Tested (MSRP)6.6-liter diesel ($7195); Allison automatic ($1200); EZ tailgate ($95); HD trailer package ($230); cargo management ($95); radiator cover ($55)
Destination Charge925
Gas Guzzler Tax
Layout4-wheel drive
Price as Tested49105
Horse Power365 @ 3200
Torque660 @ 1600
Fuel Economy
Wheelbase167.0
Length/Width/Height258.7/80.0/76.1
Track Front/Rear
Turning Radius55.1
Seating Capacity5
Front Head/Hip/Leg room41.2/62.5/41.3
Middle Head/Hip/Leg room
Rear Head/Hip/Leg room40.5/65.4/39.0
Trunk VolumeNA
Payload2779
Towing Capacity13,000
Front Suspensionindependent, torsion bars
Rear Suspensionsolid axle and leaf springs
Ground Clearance9.1
Curb Weight7121
Stock TiresLT265/75R17E
Brakes Front/Rearvented disc/vented disc with ABS
Fuel Capacity34.0
2008 GMC Sierra