6R75 - Automatic Transmission

Diagnostic Flow Chart





Prior to carrying out the flow test, the following items should be checked:
^ Know and understand the customer concerns.
^ Check the fluid level and condition.
^ Verify the concern by operating the vehicle.Check for non-factory-installed items and verify correct installation.
^ Check the selector lever linkage adjustments.
^ Check TSBs for vehicle concerns.
^ Carry out quick test both key on engine running (KOER) and key on engine off (KOEO).
^ Record all codes.
^ Verify that the vehicle transmission control module (TCM) is at the latest calibration release level.