Automatic Transmission Diagnostic Procedures: Introduction: Notes

The procedures contained in this service information include all of the specifications, instructions, and graphics needed to diagnose 42RLE Electronic Automatic Transmission (EATX) problems  . The diagnostics in this manual are based on the failure condition or symptom being present at the time of diagnosis.

When repairs are required, refer to the appropriate service information for the proper removal and repair procedure.

Diagnostic procedures change every year. New diagnostic systems may be added and/or carry over systems may be enhanced. READ THIS SERVICE INFORMATION BEFORE TRYING TO DIAGNOSE A VEHICLE TROUBLE CODE. It is recommended that you review the entire service information to become familiar with all new and changed diagnostic procedures.