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Inner & Outer Tie Rod Replacement
Tie rods connect the rack and pinion to the steering knuckles. They essentially transfer the lateral motion of the steering…Read More -
Rear Wheel Bearing Replacement
I recently had a vibration problem in my 03 LS that didn't go away after I replaced u-joints, balanced the…Read More -
Rear Axle G80 Differential Rebuild
My G80 quit some time ago. I don't know about you, but I like both of my rear wheels to…Read More -
Front Wheel Hub / Bearing Replacement
This article covers how to diagnose and replace a front wheel bearing on a TrailBlazer (or Envoy). Wheel bearings are…Read More -
Front Axle 4WD Disconnect Rebuild
Theory of operation, common failures, and rebuilding: Unit 56, above, is known as the front axle 4WD disconnect. It…Read More -
Engine and Transmission Diagnostic Sheets
Below are trouble code diagnostic sheets for the TrailBlazer, Envoy, Rainier, Bravada, Ascender, and Saab 9-7 based on specific engines…Read More -
Diagnosing the 4WD System
We run into many questions where the owner realizes the front tires are not engaging when in a 4WD mode.…Read More