After doing some research I found that no one has a good write up on the replacement of the torsion bar crossmember bushings. The rubber in the bushing cracks and allows the whole crossmember to sit at an angle and sometimes makes a clunking sound when hitting bumps. I did this on my 2001 Tahoe LS. The first step is to remove the torsion keys and push the torsion bars forward out of the way. Then remove the two bolts holding the crossmember. Remove the crossmember. You will see three small tabs on one side of each bushing. You need to push those bushings inward using a chisel and hammer. Then, using a punch, begin beating the hell out of the lip on the bushing. It will slowly start pushing out. I destroyed those bushings getting them out.