Last updated 2021-01-20, BDS Suspension , BDS:011457 , These blocks will provide 3 inches of lift 99-06 GM 1500 and 4 inches of lift on 07+ GM 1500. Either lift will require the removal of the factory blocks. If factory blocks are not pulled than the lift will be 5 inches. Will not get 5 inches of lift, wil , 1999-2013 Silverado / Sierra 5 inch rear block kit ,