Transfer case repair — general information (Chevrolet Trailblazer 1)

Repairing a transfer case is a rather complicated procedure to perform on your own. In this case, it is necessary to disassemble and assemble many small elements. It is necessary to accurately measure many gaps and, if necessary, adjust them by adding or removing adjusting shims or spring retaining rings. Thus, the most rational option is to have the box removed and installed by an experienced mechanic, but to perform repair procedures you should contact a specialized workshop. It may be possible to obtain a replacement reconditioned box - consult the company's technical representative office on this issue. It should be noted that replacing with a reconditioned transfer case may be more cost effective than reconditioning the existing unit.

However, transfer case repair can be accomplished by an experienced mechanic with the necessary specialized equipment and by following the procedures carefully.

Retaining ring pliers are required for repairs (external and internal), bearing pullers, impact puller, punch set, gauge with pointer indicator and possibly a hydraulic press. In addition, a level, stable workbench and a vice are required.

When disassembling the transfer case, it is necessary to mark the original positions of the parts so that later the box can be assembled correctly and without wasting unnecessary time.

Before starting repairs, you should clearly understand which part of the transfer case is faulty. Some malfunctions are closely related to the failure of certain parts of the gearbox. Refer to the "Troubleshooting" section at the beginning of this manual.