Skyjacker 8500 Steering Stabilizer ((Replacement Cylinder Only) for GM Pickups and SUVs Black Boot) Fits 1976-2010 GM Pickups and SUVs Dampening Shock For Steering Stabilizer Dampens Harshness Of Highway Dampens Shimmy From Larger Tires Reduce Physical Strength Handling Larger Tires which Reduces Driver Fatigue