Best Suspension Upgrade for Your 2005 GMC Sierra 1500 – Telegraph

A leveling kit is the most popular first suspension mod for the 2005 Sierra. The factory design intentionally positions the front lower than the rear to improve aerodynamics and fuel economy when hauling heavy loads. A leveling kit—typically consisting of strut spacers, torsion bar keys, or replacement coil springs—raises the front by one to three inches. The benefits are immediate: the truck sits perfectly horizontal, you can fit slightly larger tires (typically 33 inches), and the installation cost is low, often under $300 for parts. Many owners complete the install in their driveway with basic hand tools.
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