2007 GMC Sierra Classic HD: Overview

Vehicle Highlights

Sierra Classic HD is the heavy-duty version of the Sierra Classic 1500. The Classic name denotes a basic design that dates from 1999 and is making its final appearance for 2007. Chevrolet, GMC's sister division, sells near-identical Silverado Classics. All these trucks are sold alongside redesigned versions also designated as '07 models.

Essentially unchanged from 2006, Sierra Classic HDs come in 3/4-ton 2500 and 1-ton 3500 series. Trim levels are WT (Work Truck), SLE, and top-line SLT. Three cab types are available: 2-door regular cab, a 4-door extended cab with rear access doors, and a crew cab with four full-size front-hinged doors. All can be ordered with front bucket seats or a 40/20/40 split bench. Extendeds and crews include a three-person rear bench. Regulars come with an 8-foot "long" cargo box. Extendeds and crews also offer a 6.5-foot "short" bed. Dual rear wheels are available, as are chassis-cab and chassis-cutaway models.

All Classic HD pickups are available with rear-wheel drive or 4WD that includes low range gearing but cannot be used on dry pavement. An electronic-shift transfer case is standard on 4WD SLTs, optional on SLEs. All models have standard dual dashboard airbags and antilock 4-wheel disc brakes. Side-curtain airbags are not offered. The base engine is a 6.0-liter gasoline V8 with 300 hp. A 330-hp 8.1-liter gas V8 is optional. Also available is a 6.6-liter "Duramax" turbodiesel V8 that returns from a 2006 update with 360 hp, up 60. The base V8 teams with a 5-speed manual transmission or an optional 4-speed automatic with Tow/Haul mode. The two larger engines offer a 6-speed manual or an optional Allison 5-speed automatic with Engine Grade Braking, an electronic feature that makes an automatic downshift when descending steep slopes. Options include satellite radio, OnStar assistance system, a rear-seat entertainment system for Crew Cabs, and power-extending camper mirrors.

COMPETITION

Consumer Guide® Automotive places each vehicle into one of 17 classes based on size, price, and market position. Large Pickup Trucks are traditionally the vehicle of choice for heavy-duty hauling and towing. They offer an array of cab styles and bed lengths and usually feature powerful V8 or diesel engines. For personal use, consider light-duty 1/2-ton models. For heavy-duty or commercial use, consider 3/4- or 1-ton models.

Our Best Buys include Chevrolet Silverado, Ford F-Series, and GMC Sierra. Our Recommended picks are Dodge Ram, Nissan Titan, and Toyota Tundra.