2014 GMC Sierra 3500

Vehicle Overview

Sharing much the same underpinnings with the Chevrolet Silverado HD pickup truck, the GMC Sierra HD provides truck buyers with a bit more style and luxury — especially in Denali trim. Its light-duty sibling, the 1500, was completely redesigned for 2014, but the heavy-duty 2500HD and 3500HD variants carry on. Updated versions are expected early in 2014 as 2015 models.
New for 2014
Gas trucks now have a standard 4.10 axle ratio; a 3.73 ratio is available. A spray-on bedliner is available and a bi-fuel version of the 2500HD crew cab can run on gasoline or compressed natural gas.
Exterior Highlights

• Regular-cab or crew-cab body styles
• Standard or long bed
• Available dual rear wheels (3500HD)
• Available Z71 Off-Road Package
• 17-inch wheels; 18- or 20-inch wheels available
• Front tow hooks
• Available heated and power-adjustable camper side mirrors
• Available power sunroof

Interior Highlights

• Seats up to six people (crew cab)
• Many storage spaces
• Vinyl, cloth or leather upholstery
• Front bench or bucket seats
• Available Bluetooth connectivity
• Available navigation system
• Available power-adjustable pedals
• Available power-sliding rear window
• Available backseat entertainment system

Under the Hood

• Fully boxed high-strength-steel frame
• 6.0-liter gas V-8 engine makes 360 horsepower and 380 pounds-feet of torque (301 hp and 333 pounds-feet of torque when running on CNG)
• 6.6-liter Duramax turbo-diesel V-8 makes 397 hp and 765 pounds-feet of torque
• Both engines work with a six-speed automatic transmission
• Gas engine runs on regular while turbo-diesel accepts B20
• Turbo-diesel has an exhaust-brake system that provides greater control on downhill grades and reduced brake-pad wear
• Rear- or four-wheel drive

Safety Features

• Antilock brakes
• Electronic stability system with traction control
• Trailer-sway control and hill-start assist
• Available front-seat side-impact airbags
• Available side curtain airbags
• Available backup camera
• Available rear parking sensors
• Available OnStar emergency communication service