Showing the 2006 GMC Sierra 2500 Reg Cab 133" WB 2WD Work Truck 300.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) Wondering which trim is right for you? Our 2006 GMC Sierra 2500 trim comparison ...

A truck brand based around professional grade performance, the 2006 GMC Sierra 2500HD receives strengthened diesel power. The Duramax 6.6-liter turbocharged diesel engine is radically upgraded for ...

It’s important to carefully check the trims of the car you’re interested in to make sure that you’re getting the features you want, and aren’t overpaying for those you don’t want.

The first generation GMC Sierra 2500HD became the Sierra 2500HD Classic in 2007 based on the tried and true GMT800 frame. Essentially the same vehicle as the 2006 Sierra 2500HD ... the Sierra 2500HD ...