Before Pinpoint Tests

Before Pinpoint Tests

NOTE: Prior to entering pinpoint tests, check the Powertrain Control Module (PCM) wiring harness for correct connections, bent or broken pins, corrosion, loose wires, correct routing, correct seals and their condition. Check the PCM, sensors and actuators for damage.

NOTE: If a concern still exists after electrical diagnosis, refer to Diagnosis By Symptom. 5R55S Automatic Transmission

If DTCs appear while carrying out the on-board diagnostics, refer to the Diagnostic Trouble Code Charts for the appropriate repair procedure. Trouble Code to Pinpoint Test Charts

Prior to entering pinpoint tests, refer to any TSBs for transmission concerns.