Chevrolet’s new line of Heavy Duty pickup trucks will make their debut at the Chicago Auto Show next month. The 2011 Chevy Silverado 2500 and 3500 (2010 model pictured) are expected to be powered by the highly-acclaimed 6.6-liter Duramax diesel V8 developed in partnership with the diesel wizards at Isuzu. The large V8 will most likely be accompanied by a urea solution to decrease nitrous oxide emissions.

On top of that, the Chevy HD trucks are rumored to be wrapped in revised sheetmetal and ride on an all-new chassis. The truck fanatics over at PickupTrucks.com are “sure there will likely be other surprises” as well.

We’re not sure if a revised GMC Sierra HD will also make an appearance, but given GM’s recently-revealed plans to invest in its truck program, we’re really excited to see what’s on tap – especially how the new GM HDs will stack up against the 2011 Ford Super Duty and its all-new 6.7-liter V8.

We’ve got high-res galleries of GM’s current-gen Heavy Duty trucks below the fold.

[Source: PickupTrucks.com]

2010 Chevrolet Silverado HD

2010 Chevrolet Silverado HD

2010 GMC Sierra HD

2010 GMC Sierra HD