I recently had a vibration problem in my 03 LS that didn’t go away after I replaced u-joints, balanced the tires, and checked the front wheel uni-bearing hubs (which were previously replaced). I also noticed a squeak and at times a rumble that seemed to be coming from the general direction of the rear axle […]

This article covers how to diagnose and replace a front wheel bearing on a TrailBlazer (or Envoy). Wheel bearings are a complex and fairly expensive item for a TrailBlazer.  They serve to support the vertical weight of the vehicle, transfer lateral turning forces from the wheel to the body, transfer the power from the front […]