Well I looked up the DTC codes and here is what I found...
Intermittent harness continuity.
Damaged Transmission Range (TR) Sensor.
Damaged shift solenoid.
Worn friction elements.
Enter Key On Engine Off Continuous Monitor Diagnostic Test Mode (DTM) . See: Displaying and Reading Trouble Codes (Includes Quick Tests)\Quick Test Appendix (Detailed Testing Instructions)
Observe Analog Volt/Ohm Meter (VOM) or STAR Tester LED for an indication of a fault while performing the following:
Wiggle, shake or bend a small section of the Powertrain Control Module (PCM) vehicle harness while working toward the dash panel, PCM and transmission connectors.
Is a fault indicated?
If you can't find a electrical problems...it may be time to replace the clutches/steel bands. One idea I have (just an idea mind you) is PERHAPS you can add a friction modifier to your fluid and see if it makes any difference. If you see an improvment I would say it's time to replce the clutches/steels -- rebuild time..... One key is your line pressure...since you stated it is good, this would indicate to me the valve body is in good shape......
If you switch the overdrive button off, does anything different happen?
Regards,
Bob
