LoadLifter 5000 Leaf Spring Leveling Kit LoadLifter 5000; Leaf Spring Leveling Kit; Rear; For Half-Ton Vehicles; No Drill; Installation Time 2 hrs. Or Less; CHEVROLET SILVERADO 1500 SILVERADO 1500 CLASSIC BASE CLASSIC HYBRID CLASSIC LS CLASSIC LT CLASSIC SS CLASSIC WT HYBRID LS LT WT Z71 1999 2000 2001 2002 2003 2004 2005 2006 2007 4.3L (262) Vortec 4.3L L35 (262) Vortec 4.3L LU3 (262) Vortec 4.8L GEN III LR4 Vortec (294) 5.3L GEN III Electric/Gas LM7 (325) 5.3L GEN III Flex L59 Vortec (325) 5.3L GEN III L33 Vortec (325) 5.3L GEN III LM7 Vortec (325) 6L GEN III LQ4 Vortec (364) 6L GEN III LQ9 HO Vortec (364) ELECTRIC/GAS FLEX GAS AirLift AirLift LoadLifter 5000 Leaf Spring Leveling Kit - 57272 57272 Suspension Load Leveling Kit