are you meaning the rear wheel spindle rods? Where you would turn the eccentric cams to adjust rear toe? If so, you will have to lower down the two bolts that attach the rear suspension support to the body just enough to get the bolts out. You don't have to completely remove the bolts just low enough to have clearance to remove the spindle rod bolts.
Gm designed these track bar's like crap. They didn't have the diy home mechanic in mind. Or they just want to make things difficult for us. Seriously though who builds a car and doesn't think about what has to be done to take it back apart? Oh wait GM does