2005 GMC Sierra 2500 | Review | Buying Guide
If you feel as though a ½-ton truck just isn’t big or strong enough for you needs, then you must be a very needy person. However, for all of you out there that want the peace of mind that your vehicle can handle pretty much anything, GMC offers the heavy-duty class of pickup trucks.
In the heavy-duty class there are ¾-ton 2500 models and full 1-ton 3500s (covered separately). The 2500 slides nicely between the two with a mix of sheer brawn and practical versatility.
There are a variety of different configurations, both size-wise and in terms of the powertrain, with this year’s Sierra 2500, because GMC knows that different people have different needs for their pickups—especially in the heavy-duty realm. There are regular cabs, extended cabs, crew cabs and both long and short cargo beds.
Under the Hood
Driving all the trims and models in the 2500 class is one tough engine. It is a 6.0-liter V8 model capable of producing 300 horsepower at 4400 rpm and 360 lb-ft of torque at 4000 rpm. 4-speed automatic transmission is responsible for the shifting. It features GM’s Tow/Haul mode, which adjusts shift points to maximize power under heavy loads.
2005 Sierra models offer a rear-wheel drive configuration with optional traction control, or two 4WD systems. The base 4WD setup must be disengaged on dry pavement. Optional Autotrac 4WD can be left engaged on dry pavement. Both systems include low-range gearing.
However, there are three other transmissions and two optional engines waiting to be used. The transmission choices include 5-speed manual, 5-speed automatic and 6-speed manual. The engines are an 8.1-liter V8 and a 6.6-liter Duramax diesel V8. The former produces 330 horsepower at 4200 rpm and 450 lb-ft of torque at 3200 rpm.
The diesel engine pumps out between 300 and 310 horsepower and 600-605 lb-ft of torque.
Standard Features, Options Packages and Style
The 2005 Sierra features a useful driver information center that keeps you abreast of all the pertinent happenings with your truck. Included are a trip odometer and a message center that monitors numerous systems like low fuel, turn signal "on", transmission temperature, low engine coolant level and oil change notification.
Leather seats are standard on uplevel SLT extended and crew cabs. Extended cab models use leather up front and vinyl in the rear, while crew cabs have two rows of the plush fabric.
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