The 2005 Chevrolet Silverado 2500HD 4 Dr LT Crew Cab LB HD 4WD has a 6.0 L, 300 hp V8 engine with standard 4 speed automatic transmission.  This trim has 4 doors, seats 5, and offers a long list of standard features that includes air conditioning, power windows, power door locks, power/leather seats, cd player, and ABS brakes.  Sunroof comes as an option.  Towing capacity maxes out at 14400 lbs.