Transmission shifter shifts fine through P, R, N, D but gers not engaging

see if shifter on trans actually moves check for continuity see pics..... your trans is probably shot though

Hmac300
Thanks for the great info.
Do you know what voltage I should see at these points.
Also would you have access to a wiring diagram of the shift solenoids connector and what test voltage should I see at the various pins on the harness connector
Thank you

if you were not seeing voltage to shifter the check engine light would go on. so you don't need to check I just think you ought to go to a trans guy as it may not have pressure or clutch pak is gone

Check engine light came on and DTC above (P0755, P0766) came on. Have removed shift solenoids and tested solenoids good.
I need to test my shift solenoid connector if it is supplying the power needed for the solenoids.

there are no voltage tests for what you want it's all resistance see pics. check resistance of connector to tcm as well should not be over 5 ohm

I apologize for being so dumb but where is the AT relay located. I did not see one in the fuse box by the battery and there was none in the one by the driver left knee.
Thanks

PS: how do I disconnect the TCM to test the harness. Is there a clip or push latch and where exactly is it located?
My solenoids tested 3.6-0hms each at the solenoids but now I need to test the solenoid through the harness as you suggested.
Thank you

ay is located below center of dash near srs control module. tcm below center of dash no pic for either pic is where srs module is.

New information when I unplugged the shift solenoids connector at the transmission I got these errors:
1. P0750 shift solenoid A
2. P0755 shift solenoid B
3. P0760 shift solenoid C
4. P0765 shift solenoid D
5. P1529 Manufacturer Control
6. Torque Converter/Clutch cct open

Does this indicate that my shift solenoid harness/connector wires are good?

no like I said the first time i'd bet your trans is trashed and there is a problem with clutch/seals or not enough oil pressure. I fyou checked the wires from trans to tcm and they have low ohms then it'snot the harness nor the shifter. take it to a trans guy. I have no further comments or suggestions.

Thanks a bunch for your help.
Much appreciated