The 2003–2007 Chevrolet Silverado 2500HD, better known as the Cateye, is one of the most recognizable GM heavy-duty trucks ever built. Under the hood, these GMT800 trucks could be had with the 6.0L Vortec gas V8, 8.1L big block, or the 6.6L Duramax diesel, including the LB7, LLY, and highly sought-after LBZ.
Underneath, the Silverado 2500HD uses an independent torsion-bar front suspension with a leaf-sprung solid rear axle. That setup makes leveling kits one of the most popular first modifications, helping remove the factory rake and creating room for larger tires without committing to a full suspension lift.
Wheel fitment uses the classic GM 8x6.5 bolt pattern, opening the door to a huge selection of aftermarket wheels. Depending on suspension height, wheel width, offset, and how much trimming you’re willing to do, these trucks can go from a simple factory-plus setup to wide wheels, larger all-terrain or mud-terrain tires, and fully lifted builds.
Whether you’re putting together a clean LBZ daily, a leveled tow rig, or a lifted Cateye on aggressive wheels and tires, the 2003–2007 Silverado 2500HD gives you plenty of room to build it your way.
