EZ-990 Medium Duty Load Leveler EZ-990 Medium Duty Load Leveler; 990/1200 lbs. Capacity CHEVROLET GMC SIERRA 1500 SIERRA 1500 CLASSIC SILVERADO 1500 SILVERADO 1500 CLASSIC BASE CLASSIC HYBRID CLASSIC LS CLASSIC LT CLASSIC SL CLASSIC SLE CLASSIC SLT CLASSIC SS CLASSIC WT HT HYBRID LS LT SL SLE SLT SS 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 LQ9 HO Vortec (364) ELECTRIC/GAS FLEX GAS with Adjustable Hellwig Hellwig EZ-990 Medium Duty Load Leveler - 986 986 Leaf Spring Helper
