McGaughy's Lift Kit on a 2011 GMC Sierra Denali 2500HD - High Expectations Photo Gallery
13. The first step was to unbolt the U-bolts and drop the rearend down to make way for the lift blocks. The new lift blocks were set in place and the longer U-bolts were inserted over the leaf springs and bolted to the axle housing. A new bumpstop extension was then bolted onto the axlehousing.