OTC (7832) GM Torsion Bar Unloader This tool is required to safely release the tension on the front suspension torsion bar to service the front suspension Larger design to cover the newer GM Truck applications Application: 2011 and newer HD C/K Trucks When servicing the lower control arm of the front suspension on GM trucks or replacing a torsion bar it is necessary to remove the spring pressure from the suspension Torsion bar unloader can be positioned on the frame and the torsion bar mount