How big is a GMC Sierra 2500 engine?
How big is a GMC Sierra 2500 engine? - Buy, Sell & Save with Canada's #1 Local Classifieds. 2003 GMC Sierra · Truck · Driven 289,000 kilometers 2003 GMC Sierra 2500, 8.1L 496 big block motor with a 5 speed Allison transmission. Truck has a 8” pro Comp suspension lift and a 3” body lift for a total of 11” of lift. Is the GMC 2500HD a 1 ton truck? I used to have an 04 gmc 2500hd, and yes they have a 1 ton axle. However, this doesn't make it a 1 ton. The frame and suspension and all...