These hoists are custom designed to fit your 1999-2010 Gas model Chevy Silverado/GMC Sierra 8-foot box pickup truck. For diesel trucks, this hoist will only fit the 2004-2005 models. The 2004-2010 gas models require relocation of the fuel vapor canister. Venco hoists are designs for and intended to be used on stationary trucks dumping on firm and level ground. Spreading applications and/or shock unloading are strictly prohibited and will void any warranty.