2006 GMC Sierra 1500HD Crew Cab. 125K miles. A 1500HD is basically a 3/4 ton truck. Has the 8 lug wheels and springs of the 3/4 ton, as well as the 6.0 Engine rather than the 5.3 and a heavier duty transmission. Crew Cab seats 5 comfortly. New Load range E tires. Call Joey @ 813-340-0918 to see this great truck!